C21D   1/00  \	0	0	4K034	C21D   1/00	97	Ǯ㡥ƤʤޤŲޤϾᤷΰŪˡޤ	General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
C21D   1/00  A	0	0	4K034	C21D   1/00	194	Ǯˡ	Heat treatment methods
C21D   1/00  B	0	0	4K034	C21D   1/00	389	Ǯ	Heat treatment devices
C21D   1/00  C	0	0	4K034	C21D   1/00	223	Ρ¬ꡤɽ	Detection, measurement, display (excluding control)
C21D   1/00  D	0	0	4K034	C21D   1/00	209	ѥǮβѡ̣ƣģȡ	Collection, treatment, use of waste gas, waste heat
C21D   1/00  E	0	0	4K034	C21D   1/00	132	ݲǮ	Heat retention
C21D   1/00  F	0	0	4K034	C21D   1/00	701	̥ȥݡݥĥȡ߶̣͡ƣģȡ	Jigs (trays, pots, hanging apparatuses etc.) (refer to F 27 D 3/12)
C21D   1/00  Z	0	0	4K034	C21D   1/00	184	¾Τ	Others
C21D   1/00 111 \	1	1	4K034	C21D   1/00	182	ʪǮưʤ	With covered item not moving inside heat treatment devices
C21D   1/00 112 \	1	1	4K034	C21D   1/00	36	ʪǮưΡ̥ȥͥϧƣ£	With covered item moving inside heat treatment devices (tunnel furnace F 27 B 9/00)
C21D   1/00 112 A	1	0	4K034	C21D   1/00	40	ˡϧ	Conveyance method (excluding furnace)
C21D   1/00 112 B	1	0	4K034	C21D   1/00	226	֡ϧ	Conveyance devices (excluding furnace)
C21D   1/00 112 C	1	0	4K034	C21D   1/00	156	Ϣ³̥ȥĥסͽϢ³ϧ	Continuous furnace for treatment of continuous materials (strips, lines)
C21D   1/00 112 D	1	0	4K034	C21D   1/00	427	Ϣ³Ǯϧ	Continuous heat treatment furnaces
C21D   1/00 112 E	1	1	4K034	C21D   1/00	37	ҡǮҶѷפޤ	Combined type for cold billets/hot billets (including intermediate charging type)
C21D   1/00 112 F	1	1	4K034	C21D   1/00	359	ϧɡɡռΡϧɡɡƣģǳ¦ήġƣ͡ƻ¦ռΡƣģȡ	Furnace walls/partition walls/radiant body (refer to furnace walls/partition walls, F 27 D 1/, 5/, combustion side of current plate, F 23 M, flue side radiation bodies, F 27 D 17/)
C21D   1/00 112 G	1	2	4K034	C21D   1/00	88	ϧ̣ƣģȡ	Furnace doors (refer to F 27 D 1/18)
C21D   1/00 112 H	1	1	4K034	C21D   1/00	152	ͻݥӽС̣ƣģȡ	Discharge, removal of melting scale (refer to F 27 D 23/02)
C21D   1/00 112 J	1	1	4K034	C21D   1/00	153	ϧΤΥݥ̣ƣģ»ȡ	Furnace body seal (refer to F 27  D 7/06 B)
C21D   1/00 112 K	1	1	4K034	C21D   1/00	139		Control
C21D   1/00 112 L	1	2	4K034	C21D   1/00	83		Conveyance control
C21D   1/00 112 M	1	3	4K034	C21D   1/00	163		Charging, extraction control
C21D   1/00 112 Z	1	0	4K034	C21D   1/00	17	¾Τ	Others
C21D   1/00 113 \	2	2	4K034	C21D   1/00	14	ʡ̣£ǡ	Conveyance means (conveyance in general B 65 G)
C21D   1/00 113 A	2	0	4K034	C21D   1/00	112	ץĥݷ	Pusher type
C21D   1/00 113 B	2	0	4K034	C21D   1/00	9	ץĥݤȥݥ󥰥ӡݥʻ	Combined used of pusher and walking beam
C21D   1/00 113 C	2	0	4K034	C21D   1/00	157	ž̥ȥȡݥݥ󥿥פϣʡ	Rotating type (retort, rotary kiln type J)
C21D   1/00 113 D	2	1	4K034	C21D   1/00	56		Charging, extraction
C21D   1/00 113 E	2	0	4K034	C21D   1/00	26	ưưޤ	Vibration type (including swing type)
C21D   1/00 113 F	2	0	4K034	C21D   1/00	31	ⷿ	Hanging type
C21D   1/00 113 G	2	0	4K034	C21D   1/00	111	ַ	Hand cart type
C21D   1/00 113 H	2	1	4K034	C21D   1/00	30	ּ	Hand cart per se
C21D   1/00 113 J	2	0	4K034	C21D   1/00	25	ȥȡݥݥ󷿡̿ʿžݥݥϡݥפϣá	Retort, rotary kiln type (horizontal rotation, rotary hearth type C)
C21D   1/00 113 Z	2	0	4K034	C21D   1/00	81	¾Τ	Others
C21D   1/00 114 \	3	3	4K034	C21D   1/00	29	ݥ󥰥ӡݥ	Walking beam
C21D   1/00 114 A	3	0	4K034	C21D   1/00	138	ϧ	Furnace operation
C21D   1/00 114 B	3	0	4K034	C21D   1/00	266	ϧκ	Furnace details
C21D   1/00 114 C	3	1	4K034	C21D   1/00	61	ӡݥݥǮ	Thermal shield of beam post
C21D   1/00 114 D	3	1	4K034	C21D   1/00	52	ϧΥݥ	Sealing of bottom opening
C21D   1/00 114 Z	3	0	4K034	C21D   1/00	304	¾Τ	Others
C21D   1/00 115 \	3	3	4K034	C21D   1/00	45	ϡݥݥ̶°ȥĥѤΤΣãģ	Hearth rollers (for metal strips C 21 D 9/56, 101)
C21D   1/00 115 A	3	0	4K034	C21D   1/00	762	¤	Shapes, structures, materials
C21D   1/00 115 Z	3	0	4K034	C21D   1/00	326	¾Τ	Others
C21D   1/00 116 \	3	3	4K034	C21D   1/00	14	ĥɥѥס̣ƣģȡ	Skid pipes (refer to F 27 D 3/02)
C21D   1/00 116 A	3	0	4K034	C21D   1/00	181	ĥɥѥפʤ	Skid pipe covers
C21D   1/00 116 B	3	0	4K034	C21D   1/00	398	ĥɥݥ롤饤ܥη¤	Shapes, structures, materials of skid rails, riders, buttons
C21D   1/00 116 C	3	0	4K034	C21D   1/00	171	ĥɥޡݥ㸺	Reduction, removal of skid marks
C21D   1/00 116 Z	3	0	4K034	C21D   1/00	203	¾Τ	Others
C21D   1/00 117 \	2	2	4K034	C21D   1/00	622	Ǯ֤ؤʪӽ	Charging, extraction of covered items to heat treatment devices
C21D   1/00 118 \	1	1	4K034	C21D   1/00	6		Cooling
C21D   1/00 118 A	1	0	4K034	C21D   1/00	146	Ѿ̣££ȡ	Cooling floors (refer to B 21 B 43/)
C21D   1/00 118 B	1	0	4K034	C21D   1/00	235	Ϣ	Continuous casting materials
C21D   1/00 118 Z	1	0	4K034	C21D   1/00	219	¾Τ	Others
C21D   1/00 119 \	2	2	4K034	C21D   1/00	389	Τˤ	Cooling by air
C21D   1/00 120 \	2	2	4K034	C21D   1/00	295	Τˤ	Cooling by liquid
C21D   1/00 121 \	3	3	4K034	C21D   1/00	348		Tanks
C21D   1/00 122 \	3	3	4K034	C21D   1/00	199	ߥ͡ݥեݡ̶°ȥĥѤΤΣãģ	Laminating flows (for metal strips C 21 D 9/52, 102)
C21D   1/00 123 \	3	3	4K034	C21D   1/00	51	ץݡ̶°ȥĥѤΤΣãģ	Sprays (for metal strips C 21 D 9/56, 102)
C21D   1/00 123 A	3	0	4K034	C21D   1/00	439	ġǮѡ££	Boards (cooling after rolling, B 21 B 45/)
C21D   1/00 123 B	3	0	4K034	C21D   1/00	77		Pipe
C21D   1/00 123 Z	3	0	4K034	C21D   1/00	415	¾Τ	Others
C21D   1/00 124 \	2	2	4K034	C21D   1/00	121	Τˤ	Cooling by solid matters
C21D   1/00 125 \	2	2	4K034	C21D   1/00	70	ʾȹ碌	Combination of the above
C21D   1/02  \	1	1	4K039	C21D   1/02	50	¤ޤϰˤ줿ʤޤϺιŲǤäѰʳβǮɬפȤʤ	Hardening articles or materials formed by forging or rolling, with no further heating beyond that required for the formation
C21D   1/04  \	1	1	4K039	C21D   1/04	105	ĶȡޤųʻѤ	with simultaneous application of supersonic waves, magnetic or electric fields
C21D   1/06  \	1	1	4K039	C21D   1/06	143	ɽ̹Ų	Surface hardening
C21D   1/06  A	1	0	4K039	C21D   1/06	2970	úⲽ	Carburizing, nitriding or carbo-nitriding
C21D   1/06  E	1	0	4K039	C21D   1/06	155	ǮħΤ	characterized by heating-cooling operation
C21D   1/06  Z	1	0	4K039	C21D   1/06	62	¾	Others
C21D   1/08  \	2	2	4K039	C21D   1/08	66	бˤ	with flames
C21D   1/09  \	2	2	4K039	C21D   1/09	89	ŵŪ뤤ưͥ륮ˤΡγͤˤΡΣ	by direct application of electrical or wave energy; by particle radiation [3]
C21D   1/09  A	2	0	4K039	C21D   1/09	225	ưͥ륮ݡ̥ݥͤˤ	by wave energy, e.g. laser
C21D   1/09  F	2	1	4K039	C21D   1/09	91	طϤħΤ	Characterised by its optical system
C21D   1/09  G	2	2	4K039	C21D   1/09	78	¤̤Ų	hardening the inner surface of holes or gutters
C21D   1/09  H	2	2	4K039	C21D   1/09	113	ӡݥħΤΡ̥ӡݥͥ륮ʬۤβޤࡣƥݥߥݡʿԲ	characterized by moulding of beams, e.g. alteration of beam shape or energy distribution, integration mirror, parallelising
C21D   1/09  L	2	1	4K039	C21D   1/09	81	ùʪɽ̤ʤ	covering the surface of the work
C21D   1/09  M	2	1	4K039	C21D   1/09	319	ħΤ	characterized by process or operation
C21D   1/09  R	2	1	4K039	C21D   1/09	59	ħΤʤ	not characterized by process or operation
C21D   1/09  B	2	0	4K039	C21D   1/09	101	γ͡Żҥӡݥͤˤ	by particle radiation
C21D   1/09  C	2	0	4K039	C21D   1/09	74	ŵŪͥ륮ݤˤΡ̥š׷ˤΤޤ	by electrical energy
C21D   1/09  U	2	1	4K039	C21D   1/09	120	ŲǮˤΡ̹ŲǮޤ	by galvanisation heating, e.g. high frequency galvanisation heating
C21D   1/09  D	2	1	4K039	C21D   1/09	111	ݥȡݥѤ	using arc torch
C21D   1/09  V	2	2	4K039	C21D   1/09	16	襤˴ؤ	related to imitation
C21D   1/09  W	2	2	4K039	C21D   1/09	33	ݥ˴ؤΡ̥ȡݥοưޤ	related to oscillation, e.g. torch vibration
C21D   1/09  E	2	1	4K039	C21D   1/09	68	Ų򥢡ݥˤ	by electrolytic arc
C21D   1/09  Z	2	0	4K039	C21D   1/09	77	¾Τ	Others
C21D   1/10  \	3	3	4K039	C21D   1/10	32	ŵͶƳˤΡΣ	by electric induction [3]
C21D   1/10  A	3	0	4K039	C21D   1/10	370	֡ͥξ̺ͥͿ	Quenching of gears, screws or the llike
C21D   1/10  B	3	0	4K039	C21D   1/10	214	̤ξ̺ͥͿ	Quenching of inner surface
C21D   1/10  M	3	1	4K039	C21D   1/10	115	ư줹Ρ̺ͥͿ	by movable quenching
C21D   1/10  C	3	0	4K039	C21D   1/10	72	ʷϵǤΤ	in atmosphere
C21D   1/10  D	3	0	4K039	C21D   1/10	181	¬ꡦ	characterized by measurement or control
C21D   1/10  P	3	1	4K039	C21D   1/10	204	ַᡤ֤θФ˴ؤΡ̰֡٤θС桤ַ桤Ļ֤˴ؤΡ	Positioning or detection of position e.g. detection of angle, conveyance control, gripping devices
C21D   1/10  E	3	0	4K039	C21D   1/10	169	Ϣ³ΡϢ³ΤǤʤȤ⥿ĥȼݥꡤ٥ȥ٥ˤ꼡˽Τޤ	for continuous treatment
C21D   1/10  F	3	0	4K039	C21D   1/10	121	Ū˹«	by mechanically restraining
C21D   1/10  G	3	0	4K039	C21D   1/10	333	η¤	characterized by shape or structure of coil
C21D   1/10  R	3	1	4K039	C21D   1/10	430	Ǯ椹뤿ΤΡ̥ΰ֡ѰǮǮΤΤΤޤࡣ	for heating control e.g. coil position
C21D   1/10  S	3	2	4K039	C21D   1/10	134	Ѥ	using core or the like
C21D   1/10  H	3	0	4K039	C21D   1/10	471	ΤβǮħΤΡѤʤβǮޤ	characterized by heating for quenching
C21D   1/10  U	3	1	4K039	C21D   1/10	154	ϤĴˤ	by adjustment of electricity
C21D   1/10  J	3	0	4K039	C21D   1/10	426	ΤѤħΤ	characterized by cooling for quenching
C21D   1/10  K	3	0	4K039	C21D   1/10	131	Ÿ³˴ؤ	characterized by power source or connection
C21D   1/10  Y	3	0	4K039	C21D   1/10	177	ùʪΰַᡦ	characterized by positioning or conveyance of the works
C21D   1/10  Z	3	0	4K039	C21D   1/10	174	¾Τ	Others
C21D   1/18  \	1	1	4K039	C21D   1/18	23	ŲʣãģͥˡθξƤɤȼ뤤ȼʤʾ֣ãģˡΣ	Hardening (C21D 1/02 takes precedence); Quenching with or without subsequent tempering (quenching devices C21D 1/62) [3]
C21D   1/18  A	1	0	4K039	C21D   1/18	226	Ĥξ̺ͥͿ	Quenching of steel sheets
C21D   1/18  B	1	0	4K039	C21D   1/18	230	ݴɤξ̺ͥͿ	Quenching of steel pipes
C21D   1/18  C	1	0	4K039	C21D   1/18	1112	«̺ͥͿ	Restrained quenching
C21D   1/18  N	1	1	4K039	C21D   1/18	228	Ծʪ	of tubular or annular works
C21D   1/18  Q	1	1	4K039	C21D   1/18	238	ʿľʪ̴ʿĤǤʤƤ⡤ΤΤޤࡣ礭ѷľǤʤʤĤΤϡäͿ	of tabular or saucer-shaped works (largely defomed and that is no longer tabular C21D1/18@C)
C21D   1/18  D	1	1	4K039	C21D   1/18	90	ݥˤ빴«	Restraining by roller
C21D   1/18  E	1	0	4K039	C21D   1/18	239	ݼξ	Quenching of specific steel type
C21D   1/18  F	1	0	4K039	C21D   1/18	212	ץݾ	Spray quenching
C21D   1/18  R	1	1	4K039	C21D   1/18	35	̤ؤΥץ	Spraying on inner surface
C21D   1/18  S	1	1	4K039	C21D   1/18	61	Ϣ³	Continuous quenching
C21D   1/18  G	1	0	4K039	C21D   1/18	120		Bath quenching
C21D   1/18  T	1	1	4K039	C21D   1/18	104	ʣХĥϧ̲ǮȾʤΡǮϢ³ŪǮޤ	Multi-chamber batch furnaces i.e. comprised of heating chamber and quenching chamber, e.g continuous heating of heating chamber
C21D   1/18  H	1	1	4K039	C21D   1/18	143	Ϣ³	by continuous treatment
C21D   1/18  J	1	1	4K039	C21D   1/18	143	ȤδϢ	characterized by quenching tank and related matters
C21D   1/18  U	1	1	4K039	C21D   1/18	222	Ϥ󡤱դν̣֡פͥ衣դβǮѡĥޤ	characterized by agitation or treatment of liquid e.g.heating or cooling of liquid, treatment of sludge
C21D   1/18  V	1	1	4K039	C21D   1/18	150	ؤǤư	characterized by charging into quenching tank or swinging inside tank
C21D   1/18  W	1	2	4K039	C21D   1/18	39	ݥȤˤΤ	Charging by shoot
C21D   1/18  K	1	0	4K039	C21D   1/18	266	ͶƳǮˤ	by induced heating
C21D   1/18  L	1	1	4K039	C21D   1/18	67	ĹܺϢ³Ǯ	Continuous heating of elongated materials
C21D   1/18  M	1	2	4K039	C21D   1/18	57		Pipes
C21D   1/18  X	1	0	4K039	C21D   1/18	191		Gas cooling
C21D   1/18  P	1	0	4K039	C21D   1/18	595	ᤷ	Tempering
C21D   1/18  Y	1	0	4K039	C21D   1/18	156	֥	Sub-zero treatment
C21D   1/18  Z	1	0	4K039	C21D   1/18	172	¾Τ	Others
C21D   1/19  \	2	2	4K039	C21D   1/19	86	ǾˤΡΣ	by interrupted quenching [3]
C21D   1/20  \	3	3	4K039	C21D   1/20	93	졤㡥١ʥȹŲΣ	Isothermal quenching, e.g. bainitic hardening [3]
C21D   1/22  \	3	3	4K039	C21D   1/22	12	ޥƥѡΣ	Martempering [3]
C21D   1/25  \	2	2	4K039	C21D   1/25	21	áäδ֤ξƤʤޤȤ߹礻ŲʤĴΣ	Hardening, combined with annealing between 300 &deg;C and 600 &deg;C, i.e. heat refining ("Verg&uuml;ten") [3]
C21D   1/26  \	1	1	4K039	C21D   1/26	58	Ƥʤޤˡ	Methods of annealing
C21D   1/26  A	1	0	4K039	C21D   1/26	92	ɡͥͿ	of pipes
C21D   1/26  B	1	0	4K039	C21D   1/26	60	ͥͿ	of wires
C21D   1/26  C	1	1	4K039	C21D   1/26	107	Ϣ³ߡͥͿ	Continuous annealing
C21D   1/26  D	1	0	4K039	C21D   1/26	279	ĤξˡͥͿ	of thin plates
C21D   1/26  E	1	1	4K039	C21D   1/26	199	ĤϢ³ˡͥͿ	Continuous annealing
C21D   1/26  F	1	0	4K039	C21D   1/26	137	Ĥξ֡ͥͿ	characterized by annealing devices for thin plates
C21D   1/26  G	1	1	4K039	C21D   1/26	168	ĤϢ³֡ͥͿ	Continuous annealing
C21D   1/26  K	1	0	4K039	C21D   1/26	151	ݼˤΤ	characterized by steel type
C21D   1/26  N	1	0	4K039	C21D   1/26	174	ʷϵˤΤ	characterized by atmosphere
C21D   1/26  P	1	1	4K039	C21D   1/26	78	ʷϵӤ	Atmosphere composition and its generation
C21D   1/26  R	1	0	4K039	C21D   1/26	85	ξ	of welded areas
C21D   1/26  S	1	0	4K039	C21D   1/26	123	֤Ӥλˡ	characterized by annealing devices or their use
C21D   1/26  T	1	1	4K039	C21D   1/26	83	Ϣ³	Continuous annealing
C21D   1/26  Z	1	0	4K039	C21D   1/26	105	¾Τ	Others
C21D   1/28  \	2	2	4K039	C21D   1/28	78	Ƥʤ餷	Normalising
C21D   1/30  \	2	2	4K039	C21D   1/30	124	ϽƤʤޤ	Stress-relieving
C21D   1/32  \	2	2	4K039	C21D   1/32	284	𲽾Ƥʤޤ㡥	Soft annealing, e.g. spheroidising
C21D   1/34  \	1	1	4K039	C21D   1/34	44	Ǯˡʣãģͥ	Methods of heating (C21D 1/06 takes precedence)
C21D   1/34  H	1	0	4K039	C21D   1/34	227	ݥˤǮɽ̹Ųϣ	by laser (surface hardening C21D1/09)
C21D   1/34  J	1	0	4K039	C21D   1/34	159	ŵϧˤǮ	by electric furnace
C21D   1/34  K	1	1	4K039	C21D   1/34	36	˴ؤ	characterized by control
C21D   1/34  L	1	1	4K039	C21D   1/34	48	Ϣ³Ū˹Ԥ	by continuously
C21D   1/34  P	1	0	4K039	C21D   1/34	239	饸ȥݥ֤ѤǮ̥饸ȥݥ֤ӥˤͽǮޤࡣ饸ݥ֤ѤΤϡǡľϧӥˤͽǮϡС	using radiant tubes <br>(using open-type radiant tube C21D1/52@G, preheating by exhaust from open fire furnace C21D1/52@P)
C21D   1/34  R	1	0	4K039	C21D   1/34	203	¾ռͲǮ̥סֳŵϧʳǮǮˤǮ줿ΤռǮѤޤ	radiation heating not otherwise provided for <br>e.g. lamp, infrared heating, electrothermal heating other than by electric furnance or using radiation heat of those heated by gas
C21D   1/34  S	1	0	4K039	C21D   1/34	112	¾μʤˤǮ̲ǮʤꤷΡ㡥ͶżͻǮ	by specified heating means not otherwise provided for e.g. dielectric, fusion heating
C21D   1/34  U	1	0	4K039	C21D   1/34	84	ʾβǮʤˤǮ	by two or more heating means
C21D   1/34  Z	1	0	4K039	C21D   1/34	56	¾Τ	Others
C21D   1/34 101 \	2	2	4K039	C21D   1/34	120	Ǯˤ	by heating gas
C21D   1/38  \	2	2	4K039	C21D   1/38	126	ŤˤǮ	Heating by cathodic discharges
C21D   1/40  \	2	2	4K039	C21D   1/40	284	ľ񹳲Ǯ	Direct resistance heating
C21D   1/40  A	2	0	4K039	C21D   1/40	202	Ϣ³ŲǮ	Continuous galvanisation heating
C21D   1/40  C	2	0	4K039	C21D   1/40	115	Ǯ	Local heating
C21D   1/40  E	2	0	4K039	C21D   1/40	34	ư̥ĥȡͲǮ	by movable type e.g. turret, successive
C21D   1/40  G	2	0	4K039	C21D   1/40	189	桤Ĵ˴ؤ	characterized by control or adjustment
C21D   1/40  Z	2	0	4K039	C21D   1/40	130	¾	Others
C21D   1/42  \	2	2	4K039	C21D   1/42	40	ͶƳǮ	Induction heating
C21D   1/42  A	2	0	4K039	C21D   1/42	30	ʴʴʤβǮ	of powder or powder-moulded materials
C21D   1/42  B	2	0	4K039	C21D   1/42	260	Ǯ϶ǮޤǮԶѰǮ뤿ζǮޤ	Local heating
C21D   1/42  C	2	1	4K039	C21D   1/42	143	βǮ	of welded areas
C21D   1/42  P	2	1	4K039	C21D   1/42	86	¦Ϣ³Ǯ	Continuous side heating of boards
C21D   1/42  Q	2	1	4K039	C21D   1/42	76	ɤüǮ	Tip heating of rods or pipes
C21D   1/42  D	2	0	4K039	C21D   1/42	89	ʷϵǤβǮ	under atmosphere
C21D   1/42  E	2	0	4K039	C21D   1/42	121	ǮŸ³ϡŰήȿ˴ؤΤǡ˥ݥ³ѿ³ޤ	characterized by power source, connection or power supply methods e.g. electric power, voltage, current, frequency, cord connection or connection of cooling water
C21D   1/42  R	2	1	4K039	C21D   1/42	166	Ϣ³ǮΤΡ̽ǮޤࡣԤͥ	Continuous heating e.g. successive hearing
C21D   1/42  T	2	1	4K039	C21D   1/42	114	ǮŸ	characterized by heating power source or power supply method
C21D   1/42  F	2	0	4K039	C21D   1/42	147	桤С̵	Control or detection (excluding power supply control)
C21D   1/42  U	2	1	4K039	C21D   1/42	142	Ϣ³ǮΤ	Continuous heating
C21D   1/42  G	2	0	4K039	C21D   1/42	134	롤ӽСַᡤٻ	characterized by supply, discharge, positioning or support
C21D   1/42  H	2	1	4K039	C21D   1/42	123	Ϣ³ŪǮΤΤ	for continuous heating
C21D   1/42  V	2	2	4K039	C21D   1/42	98	ӥĥȥҡݥ	Billet heaters
C21D   1/42  W	2	3	4K039	C21D   1/42	47	ݥ˴ؤ	characterized by rails
C21D   1/42  J	2	0	4K039	C21D   1/42	455	Ǯη¤	characterized by shape, structure or placement of heating coils
C21D   1/42  K	2	1	4K039	C21D   1/42	255	Ϣ³ŪǮΤΤ	For continuous heating
C21D   1/42  L	2	0	4K039	C21D   1/42	169	Ǯϧι¤	charaterized by structure or placement of heating furnace
C21D   1/42  M	2	0	4K039	C21D   1/42	222	Ǯħ̵Ťϡš	characterized by heating (power supply methods C21D1/42@E)
C21D   1/42  Z	2	0	4K039	C21D   1/42	124	¾Τ	Others
C21D   1/44  \	2	2	4K039	C21D   1/44	23	Ǯˤ	in heat-treatment baths
C21D   1/46  \	3	3	4K039	C21D   1/46	12		Salt baths
C21D   1/46  A	3	0	4K039	C21D   1/46	91	ξϷɻߡͥͿ	Bath composition, cleaning of baths, aging prevention of baths
C21D   1/46  E	3	0	4K039	C21D   1/46	25	ǮβͥͿ	Collection or rinsing of salt or heat
C21D   1/46  H	3	0	4K039	C21D   1/46	27	βǮ	Heating of wires
C21D   1/46  Z	3	0	4K039	C21D   1/46	120	¾	Others
C21D   1/48  \	3	3	4K039	C21D   1/48	68	°	Metal baths
C21D   1/50  \	3	3	4K039	C21D   1/50	12		Oil baths
C21D   1/52  \	2	2	4K039	C21D   1/52	16	бˤ	with flames
C21D   1/52  D	2	0	4K039	C21D   1/52	116	ľмǮϧˤǮ̤褽ǳƤǲǮΤϡء	by open heat type furnace (by gas combusted elsewhere C21D1/34,101)
C21D   1/52  E	2	1	4K039	C21D   1/52	124	Ϣ³ΤβǮ	of continuous body
C21D   1/52  F	2	1	4K039	C21D   1/52	212	Ǯ̲ǮϧˤǮβäޤ	Local heating
C21D   1/52  G	2	1	4K039	C21D   1/52	73	ռΤ˴ؤΡ̳饸ȥݥ̵֡Τޤ	characterized by radiation body e.g. open radiant tubes, ventilation solids)
C21D   1/52  K	2	1	4K039	C21D   1/52	125	˴ؤ	characterized by control
C21D   1/52  L	2	2	4K039	C21D   1/52	161	βǮϧǳ	Combustion control of heating furnaces for slabs or the like.
C21D   1/52  P	2	1	4K039	C21D   1/52	333	ǳƤ˴ؤΡ̥Сݥʡݤ֡ǳƥͶƳή̡ľϧǳӥѤޤ	characterized by combustion e.g. alignment of burner, guidance of combustion gas, distribution, open fire furnace
C21D   1/52  Q	2	2	4K039	C21D   1/52	101	Сݥʤη¤λ	characterized by shape, structure of burners or use thereof
C21D   1/52  R	2	2	4K039	C21D   1/52	164	ǳǳѶǡʷϵʬŪξ硤ء	characterized by fuels, input, cut-off of air for fuel (under specified atmospheric gas components C21D1/74 to C21D1/76)
C21D   1/52  Y	2	0	4K039	C21D   1/52	73	ǮϧѰʳΥСݥʤη¤	characterized by shape, structure or alignment of burners other than those for heating furnace
C21D   1/52  Z	2	0	4K039	C21D   1/52	86	¾Τ	Others
C21D   1/53  \	2	2	4K039	C21D   1/53	230	ήưǤβǮΣ	Heating in fluidised beds [3]
C21D   1/54  \	1	1	4K039	C21D   1/54	2	ޤŵŪ¬ˤŲη	Determining when the hardening temperature has been reached by measurement of magnetic or electrical properties
C21D   1/55  \	1	1	4K039	C21D   1/55	84	㡥ü̾Σ	Hardenability tests, e.g. end-quench tests [3]
C21D   1/56  \	1	1	4K039	C21D   1/56	60	ޤˤäħŤ줿	characterised by the quenching agents
C21D   1/58  \	2	2	4K039	C21D   1/58	217		Oils
C21D   1/60  \	2	2	4K039	C21D   1/60	17		Aqueous agents
C21D   1/60  A	2	0	4K039	C21D   1/60	131	ʬ˴ؤ	characterized by constituents
C21D   1/60  Z	2	0	4K039	C21D   1/60	30	¾	Others
C21D   1/607  \	2	2	4K039	C21D   1/607	61	ͻΣ	Molten salts [3]
C21D   1/613  \	2	2	4K039	C21D   1/613	22	Ρ̾ϵΤǤղ뤤϶ŸǤƤΣ	Gases; Liquefied or solidified normally gaseous material [3]
C21D   1/62  \	1	1	4K039	C21D   1/62	205		Quenching devices
C21D   1/63  \	2	2	4K039	C21D   1/63	267	ˤΡΣ	for bath quenching [3]
C21D   1/64  \	3	3	4K039	C21D   1/64	82	ήΤˤΡΣ	with circulating liquids [3]
C21D   1/667  \	2	2	4K039	C21D   1/667	242	ץ졼ѤΤΡΣ	for spray quenching [3]
C21D   1/673  \	2	2	4K039	C21D   1/673	63	ѤΤΡΣ	for die quenching [3]
C21D   1/68  \	1	1	4K039	C21D   1/68	17	Ǯ뤤Ϥδ֤ŬѤŪʤʪ뤤ߺ	Temporary coatings or embedding materials applied before or during heat treatment
C21D   1/70  \	2	2	4K039	C21D   1/70	38	Ǯ뤤ϾΤ	while heating or quenching
C21D   1/70  A	2	0	4K039	C21D   1/70	89	ͻɻ	for prevention of anastomoses
C21D   1/70  B	2	1	4K039	C21D   1/70	155	ӣ	High Si steel
C21D   1/70  E	2	0	4K039	C21D   1/70	133	ͥ륮ݵۼǮǮ	for energy absorption, insulation or radiation
C21D   1/70  F	2	0	4K039	C21D   1/70	37	ɽ̽	for improvement of surface treatability
C21D   1/70  G	2	0	4K039	C21D   1/70	29	Ͻɻߡ̹ڤʷϵιϽФɻߡ	for prevention of graphite precipitation e.g. from inside of the steel and atmosphere)
C21D   1/70  K	2	0	4K039	C21D   1/70	39	ɻ	for prevention of oxidation
C21D   1/70  L	2	1	4K039	C21D   1/70	53	СѤΡۡۤ	by using covers or the like  (excluding application, spraying)
C21D   1/70  M	2	1	4K039	C21D   1/70	59	ݥΤ̻ɻߺޤϣФء	for scale removal, reforming (antioxidants C21D1/70@P)
C21D   1/70  N	2	1	4K039	C21D   1/70	22	¿ʤ̾ʤȤؤɻʤǤΤޤ	by multi-layered covering e.g.with at least one layer of antioxidant cover
C21D   1/70  P	2	1	4K039	C21D   1/70	187	ɻߺ	by antioxidants
C21D   1/70  Q	2	1	4K039	C21D   1/70	9	ĥϼ	by plating or thermal spraying
C21D   1/70  R	2	1	4K039	C21D   1/70	15	Ŵλɻ	of non-ferrous materials
C21D   1/70  U	2	0	4K039	C21D   1/70	68	æúæúɻ	for prevention of decarboxylation and decarburization
C21D   1/70  V	2	0	4K039	C21D   1/70	45	úɻ	for prevention of carbonitriding
C21D   1/70  Z	2	0	4K039	C21D   1/70	38	¾	Others
C21D   1/72  \	2	2	4K039	C21D   1/72	10	ɽ̤βѲ֤ݸʤ	during chemical change of surfaces
C21D   1/74  \	1	1	4K039	C21D   1/74	61	ԳʷϵޤʴǤǮˡ	Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
C21D   1/74  F	1	0	4K039	C21D   1/74	87	ɺǮ	of pipes
C21D   1/74  G	1	0	4K039	C21D   1/74	129	Ǯ	of wires
C21D   1/74  H	1	0	4K039	C21D   1/74	391	ĤϢ³Ǯ	Continuous heat treatment of sheets
C21D   1/74  J	1	0	4K039	C21D   1/74	25	ʴǤǮήưϧξޤ	in pulverulent material e.g. in fluidised bed furnance
C21D   1/74  K	1	0	4K039	C21D   1/74	124	¬ꡦ˴ؤ	characterized by measurement or control
C21D   1/74  L	1	0	4K039	C21D   1/74	235	ȤΥݥʷϵΥݥޤ	Sealing from external air e.g. sealing of internal atmosphere
C21D   1/74  M	1	1	4K039	C21D   1/74	80	Ѥ	using gas
C21D   1/74  P	1	0	4K039	C21D   1/74	128	ʷϵ˴ؤΡʷϵ¾˲󤷤ǳƤޤ	characterized by atmospheric gas
C21D   1/74  Q	1	1	4K039	C21D   1/74	108	ѡݥִ	Advance purge or substitution
C21D   1/74  R	1	1	4K039	C21D   1/74	213	ϧؤϧؤӵ	Sending air inside the furnace, exhausting air outside the furnace
C21D   1/74  T	1	0	4K039	C21D   1/74	86	ʡݥСѤ	using inner covers or the like
C21D   1/74  U	1	0	4K039	C21D   1/74	127	Ϣ³ϧΤ	for continuous furnaces
C21D   1/74  W	1	0	4K039	C21D   1/74	40	ϧĴѤ	using core pipes
C21D   1/74  X	1	0	4K039	C21D   1/74	183	Ǯϧ°ִޤ͵ڤӤȤ˴ؤΤΤ嵭ʳΤ	characterized by heat treat furnaces, accessory devices of heat  treat furnances and operation therefor not provided for otherwise
C21D   1/74  Z	1	0	4K039	C21D   1/74	82	¾Τ	Others
C21D   1/76  \	2	2	4K039	C21D   1/76	35	ʷϵĴ	Adjusting the composition of the atmosphere
C21D   1/76  E	2	0	4K039	C21D   1/76	198	ʷϵѤ	using atmospheric gas
C21D   1/76  F	2	1	4K039	C21D   1/76	298	ƥ쥹ݤǮ	of stainless steel
C21D   1/76  G	2	1	4K039	C21D   1/76	449	η	Formation or reform of scales
C21D   1/76  H	2	1	4K039	C21D   1/76	127	ʷϵ̣ȢźáʬΤźáΣ΢εΣ΢ȯޤޤ	Generation of atmospheric gas e.g. addition of H2O, addition of degradable solids, generation of gaseous N2 from liquid N2)
C21D   1/76  J	2	2	4K039	C21D   1/76	175	ʷϵȯ͡ϧʷϵΡ	Generation and transmutation of atmospheric gas e.g. transmutation outside the furnace
C21D   1/76  L	2	2	4K039	C21D   1/76	107	ϧʷϵؤζʬդζޤ	Supply of raw gas to furnace atmosphere e.g. supply of dispersant gas, liquid
C21D   1/76  M	2	3	4K039	C21D   1/76	193	˥ⲽ	for ammonium gas nitriding
C21D   1/76  N	2	2	4K039	C21D   1/76	57	ǳӥκѡ̣̤ͥ	Reuse of combustion exhaust
C21D   1/76  Q	2	2	4K039	C21D   1/76	196	ϧʷϵκѡʷϵξ̺Ѥξϣ̤ͥ衤ϧźäƾϣ̤ͥ	Reuse of furnace atmospheric gas or purification of atmospheric gas (purification by supply of raw gas to furnace C21D1/76@L)
C21D   1/76  R	2	1	4K039	C21D   1/76	439	ϧʷϵ̣ơǡʡεڤӣѤκѤ˳ΤϽ	Control of furnace atmosphere (of stainless steel C21D1/76@F, formation of scales C21D1/76G, generation of atmospheric gas C21D1/76@J, reuse of cmbustion exhaust C21D1/76@N, reuse of atmospheric gas C21D1/76@Q)
C21D   1/76  U	2	1	4K039	C21D   1/76	73	Ϣ³Ǯ	Continuous heat treatment
C21D   1/76  V	2	0	4K039	C21D   1/76	78	ľм̥ǳƴޤͤΤ	Open fire type
C21D   1/76  W	2	1	4K039	C21D   1/76	55	ϧʷϵ	Control of furnace atmosphere
C21D   1/76  Z	2	0	4K039	C21D   1/76	10	¾Τ	Others
C21D   1/767  \	2	2	4K039	C21D   1/767	208	۴ĤˤΡƲǮΡΣ	with forced gas circulation; Reheating thereof [3]
C21D   1/773  \	2	2	4K039	C21D   1/773	236	뤤ϿˤΡΣ	under reduced pressure or vacuum [3]
C21D   1/773  A	2	0	4K039	C21D   1/773	144	ñǮ	Single chamber heating and cooling devices
C21D   1/773  D	2	0	4K039	C21D   1/773	197	ʣǮ	Multi chamber heating and cooling devices
C21D   1/773  G	2	0	4K039	C21D   1/773	53	Ϣ³ΤǮϥ٥ˤϢ³Ǯ	Heat treatment of continuous body or continuous heat treatment  by conveyors or the like.
C21D   1/773  J	2	0	4K039	C21D   1/773	252	ǮϤˡ	Heat treatment devices or operating method therefor
C21D   1/773  K	2	1	4K039	C21D   1/773	97	ϧ°	Furnace accessories
C21D   1/773  Z	2	0	4K039	C21D   1/773	53	¾	Others
C21D   1/78  \	1	1	4K039	C21D   1/78	167	ʬवʤȤ߹碌Ǯ	Combined heat-treatments not provided for above
C21D   1/82  \	1	1	4K039	C21D   1/82	68	ǮϤˤæˡʵŪæ££ŪæãŲŪæãƣ	Descaling by thermal stresses (mechanically B21, B23; chemically C23; electrolytically C25F 1/00)
C21D   1/84  \	1	1	4K039	C21D   1/84	77	椵줿ʶ°ΰѤѾ££ˡΣ	Controlled slow cooling (cooling-beds for metal rolling B21B 43/00) [3]
C21D   3/00  \	0	0	4K052	C21D   3/00	173	Ȼˡˤ°νѤϧʶŪݸʤãģ	Diffusion processes for extraction of non-metals; Furnaces therefor (local protective coatings C21D 1/72)
C21D   3/02  \	1	1	4K052	C21D   3/02	21	°ν	Extraction of non-metals
C21D   3/04  \	2	2	4K052	C21D   3/04	13	æú	Decarburising
C21D   3/04  A	2	0	4K052	C21D   3/04	49	ż	Electromagnetic steel
C21D   3/04  C	2	0	4K052	C21D   3/04	21	ʴƷ	Powdered, sintered steel
C21D   3/04  E	2	0	4K052	C21D   3/04	24	ʪ	Casting
C21D   3/04  G	2	0	4K052	C21D   3/04	135	ɽæú	Surface deliming
C21D   3/04  J	2	0	4K052	C21D   3/04	97	Ĥæú	Decarburising and annealing  of sheets
C21D   3/04  Z	2	0	4K052	C21D   3/04	35	¾	Others
C21D   3/06  \	2	2	4K052	C21D   3/06	120	Ǥν	Extraction of hydrogen
C21D   3/08  \	2	2	4K052	C21D   3/08	24	Ǥν	Extraction of nitrogen
C21D   3/10  \	1	1	4K052	C21D   3/10	14	°νѤϧ	Furnaces therefor
C21D   5/00  \	0	0	4K052	C21D   5/00	527	ŴǮ	Heat treatment of cast-iron
C21D   5/00  A	0	0	4K052	C21D   5/00	100	ݥ	Roll
C21D   5/00  D	0	0	4K052	C21D   5/00	192	ɽ̽¾ʬɽ̥ʬæúɽ̾ޤ	Surface treatment (other partial treatment), including decomposition of surface chill, decarburising, surface quenching)
C21D   5/00  E	0	1	4K052	C21D   5/00	109	ͻ	Re-melting chill
C21D   5/00  H	0	0	4K052	C21D   5/00	35	Ĺݡݥ饹ɽ̤Τߤξޤ	Growth, porosity-forming of graphite (including the case of surface only)
C21D   5/00  K	0	0	4K052	C21D   5/00	90	١ݥʥȲ¾Ǿޤͤ	Bainitising (including other interrupting quenching)
C21D   5/00  L	0	1	4K052	C21D   5/00	123	ץߥƥ֤ʥ١ݥʥȲʤѤΡñʹʳΤΤϣˤء	Using primitive bainitising means (those other than simple homoeothermic treatment K)
C21D   5/00  P	0	0	4K052	C21D   5/00	51	ŴǮ	Heat treatment of white cast iron
C21D   5/00  Q	0	1	4K052	C21D   5/00	103		Graphitised
C21D   5/00  T	0	0	4K052	C21D   5/00	234	ŴФΡ̣ãŴޤ	For round graphite cast iron (including CV cast iron)
C21D   5/00  Z	0	0	4K052	C21D   5/00	126	¾	Others
C21D   5/02  \	1	1	4K052	C21D   5/02	1	ͤŴββ	improving the malleability of grey cast-iron
C21D   5/04  \	1	1	4K052	C21D   5/04	4	ŴǮ	of white cast-iron
C21D   5/06  \	2	2	4K052	C21D   5/06	3	ò	Malleabilising
C21D   5/08  \	3	3	4K052	C21D   5/08	2	úǤλˤ	with oxidation of carbon
C21D   5/10  \	4	4	4K052	C21D   5/10	0	ʪǹԤʤ	in gaseous agents
C21D   5/12  \	4	4	4K052	C21D   5/12	1	ξʪǹԤʤ	in solid agents
C21D   5/14  \	3	3	4K052	C21D   5/14	11		Graphitising
C21D   5/16  \	4	4	4K052	C21D   5/16	0	Ƥ	Packing agents
C21D   6/00  \	0	0	4K036	C21D   6/00	95	ŴǮΣ	Heat treatment of ferrous alloys [2]
C21D   6/00  A	0	0	4K036	C21D   6/00	151		For magnetic alloys
C21D   6/00  B	0	1	4K036	C21D   6/00	666	ż	For hard magnetic alloys
C21D   6/00  C	0	1	4K036	C21D   6/00	921		For soft magnetic alloys
C21D   6/00  J	0	0	4K036	C21D   6/00	70		For free-cutting steel
C21D   6/00  K	0	0	4K036	C21D   6/00	133		For bearing steel
C21D   6/00  L	0	0	4K036	C21D   6/00	370	ݡݡ®ٹ	For tool steel, wear-resistant steel, high-speed steel
C21D   6/00  M	0	0	4K036	C21D   6/00	91	ޥ륨ݥ󥰹	For malaging steel
C21D   6/00  N	0	0	4K036	C21D   6/00	113	㲹ѹ	For low temperature steel
C21D   6/00  P	0	0	4K036	C21D   6/00	141	ȩƹ	For case hardening steel
C21D   6/00  Q	0	0	4K036	C21D   6/00	129	뤿Τ	For improving weldability
C21D   6/00  R	0	0	4K036	C21D   6/00	335	ѡʬȥץ׻ݡ	For low alloy steel (summary on ingredient components and process)
C21D   6/00  D	0	1	4K036	C21D   6/00	260	ɽ̽ȼΡɽ̽	Accompanied by surface treatment, for surface treatment
C21D   6/00  E	0	1	4K036	C21D   6/00	88		Cast steel
C21D   6/00  F	0	1	4K036	C21D   6/00	96	ѡβ	For oil well pipes, sulphurisation-resistant
C21D   6/00  G	0	1	4K036	C21D   6/00	96	ƴѡ˸ĥϹ	For pressure containers, extra-thick high tensile steel
C21D   6/00  H	0	1	4K036	C21D   6/00	162	¾ӤΤ	For other specific purposes
C21D   6/00  S	0	1	4K036	C21D   6/00	83	ùޤ	Containing processing, winding conditions
C21D   6/00  T	0	1	4K036	C21D   6/00	531	ùùѡ¤ѡѡ٤˲ںѤޤ	Processability, for processing (including for forging, for cut-off, resisting delayed fracture, for cutting)
C21D   6/00  V	0	2	4K036	C21D   6/00	60	ץ쥹ùץ쥹ùѡ̹ʤꡤʤޤ	Press processability, for press processing (including drawing, bending)
C21D   6/00  W	0	1	4K036	C21D   6/00	276	Ƥɤ	With quenching, tempering
C21D   6/00  X	0	2	4K036	C21D   6/00	26	ľܾ	Direct quenching
C21D   6/00  Y	0	1	4K036	C21D   6/00	80	٥ʥȲǾ줹	Bainitisation, with interrupting quenching
C21D   6/00  U	0	0	4K036	C21D   6/00	308	ѡ̥ץ׻ݡ	For low alloy steel (summary on process)
C21D   6/00  Z	0	0	4K036	C21D   6/00	202	¾Τ	Others
C21D   6/00 101 \	1	1	4K036	C21D   6/00	27	ݤǮ	Heat treatment of high allow steel
C21D   6/00 101 A	1	0	4K036	C21D   6/00	217	üӡΤ	For special purpose, properties
C21D   6/00 101 B	1	1	4K036	C21D   6/00	43		Damper alloy
C21D   6/00 101 F	1	0	4K036	C21D   6/00	100	ͣ	High Mn steel
C21D   6/00 101 H	1	0	4K036	C21D   6/00	94		Cast steel
C21D   6/00 101 K	1	0	4K036	C21D   6/00	243	ã	High Cr steel
C21D   6/00 101 L	1	1	4K036	C21D   6/00	109	ãݣΣ	High Cr-Ni steel
C21D   6/00 101 Z	1	0	4K036	C21D   6/00	104	¾	Others
C21D   6/00 102 \	2	2	4K036	C21D   6/00	275	ƥ쥹ݤǮ	Heat treatment of stainless steel
C21D   6/00 102 A	2	0	4K036	C21D   6/00	307	ݥƥʥȷϡ̥ߥݥƥʥȤޤ	Austenites (including semi-austenites)
C21D   6/00 102 B	2	1	4K036	C21D   6/00	69	忩˴ؤ	Related to localised corrosion
C21D   6/00 102 E	2	0	4K036	C21D   6/00	215	ե饤ȷ	Ferrites
C21D   6/00 102 F	2	1	4K036	C21D   6/00	49	ץ쥹ùܤ	Focusing on press processability
C21D   6/00 102 J	2	0	4K036	C21D   6/00	305	ޥƥ󥵥ȷ	Martensites
C21D   6/00 102 L	2	0	4K036	C21D   6/00	128	̥ݥƥʥȡե饤ȡͷ	Double-sided (austenite ferrites)
C21D   6/00 102 N	2	0	4K036	C21D   6/00	48		Cast steel
C21D   6/00 102 R	2	0	4K036	C21D   6/00	44	ϽйŲ	Precipitation hardening type
C21D   6/00 102 S	2	1	4K036	C21D   6/00	54	ݥƥʥȷϡ̥ߥݥƥʥȤޤ	Austenites (including semi-austenites)
C21D   6/00 102 T	2	1	4K036	C21D   6/00	97	ޥƥ󥵥ȷ	Martensites
C21D   6/00 102 U	2	1	4K036	C21D   6/00	30	̥ݥƥʥȡե饤ȡͷ	Double-sided (austenite ferrites)
C21D   6/00 102 Z	2	0	4K036	C21D   6/00	85	¾	Others
C21D   6/02  \	1	1	4K036	C21D   6/02	18	ϽФˤŲΣ	Hardening by precipitation [2]
C21D   6/04  \	1	1	4K036	C21D   6/04	37	ðʲѤˤŲΣ	Hardening by cooling below 0&deg; C [2]
C21D   7/00  \	0	0	4K032	C21D   7/00	12	ùѷˤŴޤϹݤʪŪβɡʶ°εŪù֣£££	Modifying the physical properties of iron or steel by deformation (apparatus for mechanical working of metal B21, B23, B24)
C21D   7/00  A	0	0	4K032	C21D   7/00	54		Low alloy steel
C21D   7/00  B	0	0	4K032	C21D   7/00	99		High alloy steel
C21D   7/00  Z	0	0	4K032	C21D   7/00	33	¾Τ	Others
C21D   7/02  \	1	1	4K032	C21D   7/02	7	ֲùˤ	by cold working
C21D   7/02  A	1	0	4K032	C21D   7/02	141		Low alloy steel
C21D   7/02  B	1	1	4K032	C21D   7/02	137		Steel plates
C21D   7/02  C	1	1	4K032	C21D   7/02	66	ݴ	Steel pipes
C21D   7/02  D	1	1	4K032	C21D   7/02	54		Steel wires, rods
C21D   7/02  E	1	0	4K032	C21D   7/02	82		High alloy steel
C21D   7/02  Z	1	0	4K032	C21D   7/02	27	¾Τ	Others
C21D   7/04  \	2	2	4K032	C21D   7/04	9	ɽֲ̤ù	of the surface
C21D   7/04  A	2	0	4K032	C21D   7/04	92		Low alloy steel
C21D   7/04  B	2	0	4K032	C21D   7/04	35		High alloy steel
C21D   7/04  Z	2	0	4K032	C21D   7/04	76	¾Τ	Others
C21D   7/06  \	3	3	4K032	C21D   7/06	28	åȥԡ˥󥰤ޤϤहΤˤ	by shot-peening or the like
C21D   7/06  A	3	0	4K032	C21D   7/06	578		Low alloy steel
C21D   7/06  B	3	0	4K032	C21D   7/06	155		High alloy steel
C21D   7/06  Z	3	0	4K032	C21D   7/06	291	¾Τ	Others
C21D   7/08  \	3	3	4K032	C21D   7/08	0	Х˥󥰻ž夲ޤϤहΤˤ	by burnishing or the like
C21D   7/08  A	3	0	4K032	C21D   7/08	15		Low alloy steel
C21D   7/08  B	3	0	4K032	C21D   7/08	1		High alloy steel
C21D   7/08  Z	3	0	4K032	C21D   7/08	8	¾Τ	Others
C21D   7/10  \	2	2	4K032	C21D   7/10	3	ṳ̀ˤ֤Ρ㡥󥯥꡼Ŵ	of the whole cross-section, e.g. of concrete reinforcing bars
C21D   7/10  A	2	0	4K032	C21D   7/10	5		Low alloy steel
C21D   7/10  B	2	1	4K032	C21D   7/10	9		Steel plates
C21D   7/10  C	2	1	4K032	C21D   7/10	5	ݴɡ̳ȴɤ	Steel pipes (excluding expanded pipes)
C21D   7/10  D	2	1	4K032	C21D   7/10	24		Steel wires, rods
C21D   7/10  E	2	0	4K032	C21D   7/10	9		High alloy steel
C21D   7/10  Z	2	0	4K032	C21D   7/10	9	¾Τ	Others
C21D   7/12  \	3	3	4K032	C21D   7/12	22	ɾΤγȴɤˤ	by expanding tubular bodies
C21D   7/13  \	1	1	4K032	C21D   7/13	28	Ǯֲùˤ	by hot working
C21D   7/13  A	1	0	4K032	C21D   7/13	45		Low alloy steel
C21D   7/13  B	1	0	4K032	C21D   7/13	26		High alloy steel
C21D   7/13  Z	1	0	4K032	C21D   7/13	15	¾Τ	Others
C21D   8/00  \	0	0	4K032	C21D   8/00	56	Ǯȷ礷ѷ뤤ϸǮȼѷˤŴ°ޤŴʪŪβɡ¤뤤ϰˤ줿ʤ뤤ϺιŲǤäѰʳβǮɬפȤʤΣãģˡΣ	Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment  (hardening articles or materials formed by forging or rolling with no further heating beyond that required for the formation C21D0001020000)[2006.01]
C21D   8/00  A	0	0	4K032	C21D   8/00	1591		Low alloy steel
C21D   8/00  B	0	1	4K032	C21D   8/00	1040	㲹	Low temperature toughness, toughness, weldability
C21D   8/00  C	0	1	4K032	C21D   8/00	110	ѿͶβʪ	Resistance to hydrogen induced cracks, resistance to sulphurisation induced cracks
C21D   8/00  D	0	0	4K032	C21D   8/00	667		High alloy steel
C21D   8/00  E	0	1	4K032	C21D   8/00	734	ƥ쥹	Stainless steel
C21D   8/00  Z	0	0	4K032	C21D   8/00	290	¾Τ	Others
C21D   8/02  \	1	1	4K032	C21D   8/02	61	Ĥ뤤ϥȥåפ¤ˤΡʣãģͥˡΣ	during manufacturing of plates or strips  (C21D0008120000 takes precedence)[2026.01]
C21D   8/02  A	1	0	4K032	C21D   8/02	2613		Low alloy steel
C21D   8/02  B	1	1	4K032	C21D   8/02	3564	㲹	Low temperature toughness, toughness, weldability
C21D   8/02  C	1	1	4K032	C21D   8/02	497	ѿͶβʪ	Resistance to hydrogen induced cracks, resistance to sulphurisation induced cracks
C21D   8/02  D	1	0	4K032	C21D   8/02	1749		High alloy steel
C21D   8/02  Z	1	0	4K032	C21D   8/02	1053	¾Τ	Others
C21D   8/021  \	2	2	4K032	C21D   8/021	7051	󥴥åȤޤϥ֤¤ޤϽޤΡΣ	involving particular fabrication steps or treatments of ingots or slabs[2026.01]
C21D   8/0221  \	2	2	4K032	C21D   8/0221	8832	ùʳħΡΣ	characterised by the working steps[2026.01]
C21D   8/0247  \	2	2	4K032	C21D   8/0247	5236	ǮħΡΣ	characterised by the heat treatment[2026.01]
C21D   8/0278  \	2	2	4K032	C21D   8/0278	4238	ɽ̽ޤΡʣãģͥˡΣ	involving a particular surface treatment (C21D0008029400 takes precedence)[2026.01]
C21D   8/0294  \	2	2	4K032	C21D   8/0294	420	ޤΡΣ	involving a localised treatment[2026.01]
C21D   8/04  \	2	2	4K032	C21D   8/04	33	ʤѤĤ뤤ϥȥåפ¤㡥ʤѤΤΡΣ	to produce plates or strips for drawing, e.g. for deep-drawing[2026.01]
C21D   8/04  A	2	0	4K032	C21D   8/04	1274		Low alloy steel
C21D   8/04  B	2	0	4K032	C21D   8/04	190		High alloy steel
C21D   8/04  Z	2	0	4K032	C21D   8/04	193	¾Τ	Others
C21D   8/06  \	1	1	4K032	C21D   8/06	43	뤤¤ˤΡΣ	during manufacturing of rods or wires[2006.01]
C21D   8/06  A	1	0	4K032	C21D   8/06	2373		Low alloy steel
C21D   8/06  B	1	0	4K032	C21D   8/06	523		High alloy steel
C21D   8/06  Z	1	0	4K032	C21D   8/06	66	¾Τ	Others
C21D   8/08  \	2	2	4K032	C21D   8/08	6	󥯥꡼䶯ΤΤΡΣ	for concrete reinforcement[2006.01]
C21D   8/08  A	2	0	4K032	C21D   8/08	282		Low alloy steel
C21D   8/08  B	2	0	4K032	C21D   8/08	28		High alloy steel
C21D   8/08  Z	2	0	4K032	C21D   8/08	5	¾Τ	Others
C21D   8/10  \	1	1	4K032	C21D   8/10	23	ɾΤ¤ˤΡΣ	during manufacturing of tubular bodies[2006.01]
C21D   8/10  A	1	0	4K032	C21D   8/10	449		Low alloy steel
C21D   8/10  B	1	1	4K032	C21D   8/10	614	㲹	Low temperature toughness, toughness, weldability
C21D   8/10  C	1	1	4K032	C21D   8/10	321	ѿǡͶβʪ	Resistance to hydrogen induced cracks, resistance to sulphurisation induced cracks
C21D   8/10  D	1	0	4K032	C21D   8/10	644		High alloy steel
C21D   8/10  Z	1	0	4K032	C21D   8/10	84	¾Τ	Others
C21D   8/12  \	1	1	4K033	C21D   8/12	36	üżͭʤ¤ˤΡΣ	during manufacturing of articles with special electromagnetic properties[2026.01]
C21D   8/12  A	1	0	4K033	C21D   8/12	2028	ż	For electromagnetic steel plates
C21D   8/12  B	1	1	4K033	C21D   8/12	2963	ż	For directional electromagnetic steel plates
C21D   8/12  C	1	2	4K033	C21D   8/12	286	ü¤ˡˤΡ㡢ҥӥݤѤʤƷ뾽	Using special manufacturing methods, e.g. not using inhibitors, tertiary recrystalisation
C21D   8/12  D	1	1	4K033	C21D   8/12	993	νˤ뼧β㡢ݥӡݥȼ͡	Improvement of magnetism through specific treatment, e.g. laser beam irradiation
C21D   8/12  E	1	1	4K033	C21D   8/12	67	ż	For electromagnetic planks
C21D   8/12  F	1	0	4K033	C21D   8/12	218	żİʳŴ	For soft magnetic steel alloys other than electromagnetic steel plates
C21D   8/12  G	1	1	4K033	C21D   8/12	9	ƣݣӣݣϹ	For Fe-Si-Al alloys
C21D   8/12  H	1	1	4K033	C21D   8/12	101	ŸĤǺȤΡ󾽼ޤ	Using quench-solidified thin plates (including amorphous)
C21D   8/12  J	1	0	4K033	C21D   8/12	23	Ŵ	For steel alloys used for magnets
C21D   8/12  Z	1	0	4K033	C21D   8/12	415	¾Τ	Others
C21D   8/1205  \	2	2	4K033	C21D   8/1205	3150	󥴥åȤޤϥ֤¤ޤϽޤΡΣ	involving particular fabrication steps or treatments of ingots or slabs[2026.01]
C21D   8/1216  \	2	2	4K033	C21D   8/1216	5682	ùʳħΡΣ	characterised by the working steps[2026.01]
C21D   8/1244  \	2	2	4K033	C21D   8/1244	6299	ǮħΡΣ	characterised by the heat treatment[2026.01]
C21D   8/1277  \	2	2	4K033	C21D   8/1277	5799	ɽ̽ޤΡʣãģͥˡΣ	involving a particular surface treatment (C21D0008129400 takes precedence)[2026.01]
C21D   8/1294  \	2	2	4K033	C21D   8/1294	1399	ޤΡΣ	involving a localised treatment[2026.01]
C21D   9/00  \	0	0	4K042	C21D   9/00	113	ʪѤǮ㡥ƤʤޤŲޤϾᤷѤϧ	Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
C21D   9/00  A	0	0	4K042	C21D   9/00	2627	ʪʤǮϧ	Heat treatment of specific articles (furnace)
C21D   9/00  B	0	1	4K042	C21D   9/00	413	ܥ	Bolts
C21D   9/00  C	0	1	4K042	C21D   9/00	113	ݥ	Chains
C21D   9/00  D	0	1	4K042	C21D   9/00	127	Ĺʪ	Elongated materials (rods)
C21D   9/00  G	0	2	4K042	C21D   9/00	125	Ǯ	Heating
C21D   9/00  H	0	2	4K042	C21D   9/00	216		Quenching, cooling
C21D   9/00  J	0	2	4K042	C21D   9/00	40		Conveyance
C21D   9/00  E	0	1	4K042	C21D   9/00	129	ȥĥݡȥĥ֥ĥ	Truck shoe, truck bush
C21D   9/00  F	0	1	4K042	C21D   9/00	110	ۡۺ	Valves, valve seats
C21D   9/00  K	0	1	4K042	C21D   9/00	103	֥ĥ	Cylinders, cylinder blocks
C21D   9/00  L	0	1	4K042	C21D   9/00	160	ƴ󥯡緿¤ʪ	Containers, tanks, large structures
C21D   9/00  M	0	1	4K042	C21D   9/00	462	񡤹ۥ	Tools, tool holders
C21D   9/00  N	0	1	4K042	C21D   9/00	151	ݥӥ֥ݥɡݥӥǥ	Turbine blades, turbine disks
C21D   9/00  P	0	1	4K042	C21D   9/00	32	ݡץڥ	Screws, propellers
C21D   9/00  Q	0	1	4K042	C21D   9/00	28	ס	Clocks, ornament parts
C21D   9/00  R	0	1	4K042	C21D   9/00	7		Printing, printing parts
C21D   9/00  S	0	1	4K042	C21D   9/00	371		Magnetic parts
C21D   9/00  Z	0	0	4K042	C21D   9/00	200	¾Τ	Others
C21D   9/00 101 \	1	1	4K042	C21D   9/00	65	ҡʥ֡ӥĥȡ	For steel pieces (slabs, billets)
C21D   9/00 101 B	1	0	4K042	C21D   9/00	73	֤֡쥤	Placement, layout of devices
C21D   9/00 101 J	1	0	4K042	C21D   9/00	69	ִ֤ιҤ	Conveyance of billets between devices
C21D   9/00 101 K	1	0	4K042	C21D   9/00	81	ݲǮ	Lagging, heat retention
C21D   9/00 101 L	1	0	4K042	C21D   9/00	128	Ǯ̴ޥĥҡݥݡ	Heating (including edge heaters)
C21D   9/00 101 A	1	1	4K042	C21D   9/00	423	ݼǮ˸Τ	With limited steel types, heating conditions
C21D   9/00 101 N	1	1	4K042	C21D   9/00	197	ͶƳǮˤ	Using guided heating
C21D   9/00 101 P	1	2	4K042	C21D   9/00	133	è	Harp-type
C21D   9/00 101 Q	1	1	4K042	C21D   9/00	63	Хĥϧˤ	Using batch furnace
C21D   9/00 101 M	1	1	4K042	C21D   9/00	118	Ϣ³ϧˤΡˡ	Using continuous furnace (operating method, operating control)
C21D   9/00 101 C	1	2	4K042	C21D   9/00	92	ĥɥޡݥɻߡ	Prevention, removal of skid mark
C21D   9/00 101 G	1	2	4K042	C21D   9/00	169	ϧ	Furnaces
C21D   9/00 101 R	1	3	4K042	C21D   9/00	99	ŷ桤ϧ졤	Ceilings, floors, partitions
C21D   9/00 101 S	1	3	4K042	C21D   9/00	61	ݥ	Doors, seals
C21D   9/00 101 E	1	3	4K042	C21D   9/00	135	ӽ	Charging, discharge
C21D   9/00 101 H	1	3	4K042	C21D   9/00	109		Conveyance
C21D   9/00 101 T	1	3	4K042	C21D   9/00	97	Ρ	Detection, control
C21D   9/00 101 F	1	4	4K042	C21D   9/00	235	Ǯ	Heating control
C21D   9/00 101 U	1	4	4K042	C21D   9/00	230	ǳ	Combustion control
C21D   9/00 101 V	1	4	4K042	C21D   9/00	152	ӽС	Charging, discharge, conveyance control
C21D   9/00 101 W	1	0	4K042	C21D   9/00	112		Cooling
C21D   9/00 101 X	1	1	4K042	C21D   9/00	34	ΡΤˤ	By solid matter, air
C21D   9/00 101 D	1	1	4K042	C21D   9/00	83	Τˤ	By liquid
C21D   9/00 101 Y	1	2	4K042	C21D   9/00	78	ץݤˤ	By spray
C21D   9/00 101 Z	1	0	4K042	C21D   9/00	20	¾	Others
C21D   9/00 102 \	1	1	4K042	C21D   9/00	39		For steel
C21D   9/00 102 A	1	0	4K042	C21D   9/00	120	ˡڤ	Methods and devices
C21D   9/00 102 B	1	1	4K042	C21D   9/00	142		Cooling
C21D   9/00 102 C	1	2	4K042	C21D   9/00	106		Cooling devices
C21D   9/00 102 Z	1	0	4K042	C21D   9/00	10	¾	Others
C21D   9/02  \	1	1	4K042	C21D   9/02	3	Х	for springs
C21D   9/02  A	1	0	4K042	C21D   9/02	518	ˡ	Methods
C21D   9/02  B	1	0	4K042	C21D   9/02	149		Devices
C21D   9/02  Z	1	0	4K042	C21D   9/02	36	¾Τ	Others
C21D   9/04  \	1	1	4K042	C21D   9/04	2	졼	for rails
C21D   9/04  A	1	0	4K042	C21D   9/04	469	ˡ	Methods
C21D   9/04  B	1	0	4K042	C21D   9/04	164		Devices
C21D   9/04  Z	1	0	4K042	C21D   9/04	20	¾Τ	Others
C21D   9/06  \	2	2	4K042	C21D   9/06	0	ȷˤʤ뷹򾯤ʤ	with diminished tendency to become wavy
C21D   9/08  \	1	1	4K042	C21D   9/08	31	ɾΤӥѥ	for tubular bodies or pipes
C21D   9/08  A	1	0	4K042	C21D   9/08	293	Ѽ	Cooling means
C21D   9/08  B	1	0	4K042	C21D   9/08	385		Quenching means
C21D   9/08  C	1	0	4K042	C21D   9/08	109	ŵŪǮ	Electric heating means
C21D   9/08  D	1	1	4K042	C21D   9/08	222	ͶƳǮ̣ơͥ	Guided heating means (F, G take precedence)
C21D   9/08  E	1	0	4K042	C21D   9/08	1129	ݼδɤǮˡ̣ͥ	Heat treatment methods of pipes made of specific steel varieties (F takes precedence)
C21D   9/08  F	1	0	4K042	C21D   9/08	863	ͭݴɡ㡥˥ݴɡͤǮˡ	Heat treatment methods for steel pipes having welded areas, e.g. electric resistance welded pipes
C21D   9/08  G	1	0	4K042	C21D   9/08	112	ͭݴɡ㡥˥ݴɡͤǮ	Heat treatment devices for steel pipes having welded areas, e.g. electric resistance welded pipes
C21D   9/08  H	1	0	4K042	C21D   9/08	470	ǰʳǮˡ	Heat treatment methods other than A to G
C21D   9/08  J	1	0	4K042	C21D   9/08	429	ǰʳǮ	Heat treatment devices other than A to G
C21D   9/08  Z	1	0	4K042	C21D   9/08	56	¾Τ	Others
C21D   9/08 101 \	2	2	4K042	C21D   9/08	7	ͶƳǮ	Guided heating
C21D   9/08 102 \	2	2	4K042	C21D   9/08	6	ѵڤӾ	Cooling and quenching
C21D   9/10  \	2	2	4K042	C21D   9/10	0	ƽƽƿ	shotgun barrels
C21D   9/12  \	2	2	4K042	C21D   9/12	1	ˤ	barrels for ordnance
C21D   9/14  \	2	2	4K042	C21D   9/14	10	פޤѰѥ	wear-resistant or pressure-resistant pipes
C21D   9/16  \	1	1	4K042	C21D   9/16	4	礦	for explosive shells
C21D   9/18  \	1	1	4K042	C21D   9/18	161	ʥա礫ޡϤߡޤμưǹ	for knives, scythes, scissors, or like hand cutting tools
C21D   9/20  \	1	1	4K042	C21D   9/20	2	Ȥο	for blades for skates
C21D   9/22  \	1	1	4K042	C21D   9/22	79	ɥѡߡ󥰥åѡں﹩	for drills; for milling cutters; for machine cutting tools
C21D   9/24  \	1	1	4K042	C21D   9/24	136	Τ	for saw blades
C21D   9/26  \	1	1	4K042	C21D   9/26	31	ѡۡʥɥ󥰡ˤλ	for needles; for teeth for card-clothing
C21D   9/28  \	1	1	4K042	C21D   9/28	5	̥ե	for plain shafts
C21D   9/28  A	1	0	4K042	C21D   9/28	734	ˡ	Methods
C21D   9/28  B	1	0	4K042	C21D   9/28	285		Devices
C21D   9/28  Z	1	0	4K042	C21D   9/28	92	¾Τ	Others
C21D   9/30  \	1	1	4K042	C21D   9/30	0	󥯥եѡॷե	for crankshafts; for camshafts
C21D   9/30  A	1	0	4K042	C21D   9/30	668	ˡ	Methods
C21D   9/30  B	1	0	4K042	C21D   9/30	390		Devices
C21D   9/30  Z	1	0	4K042	C21D   9/30	45	¾Τ	Others
C21D   9/32  \	1	1	4K042	C21D   9/32	221	ѡ֤ޤϤह	for gear wheels, worm wheels, or the like
C21D   9/32  A	1	0	4K042	C21D   9/32	1220	ˡ	Methods
C21D   9/32  B	1	0	4K042	C21D   9/32	372		Devices
C21D   9/32  Z	1	0	4K042	C21D   9/32	152	¾Τ	Others
C21D   9/34  \	1	1	4K042	C21D   9/34	85	ѡ	for tyres; for rims
C21D   9/36  \	1	1	4K042	C21D   9/36	154	ܡѡ	for balls; for rollers
C21D   9/38  \	1	1	4K042	C21D   9/38	3		for roll bodies
C21D   9/38  A	1	0	4K042	C21D   9/38	383	ˡ	Methods
C21D   9/38  B	1	0	4K042	C21D   9/38	62		Devices
C21D   9/38  Z	1	0	4K042	C21D   9/38	24	¾Τ	Others
C21D   9/40  \	1	1	4K042	C21D   9/40	120	ѡ졼	for rings; for bearing races
C21D   9/40  A	1	0	4K042	C21D   9/40	1774	ˡ	Methods
C21D   9/40  B	1	0	4K042	C21D   9/40	524		Devices
C21D   9/40  Z	1	0	4K042	C21D   9/40	453	¾Τ	Others
C21D   9/42  \	1	1	4K042	C21D   9/42	15		for armour plate
C21D   9/44  \	1	1	4K042	C21D   9/44	0	ۻΩ饤˥󥰤Τѡ㡥ȡ󥰤ޤϻ	for equipment for lining mine shafts, e.g. segments, rings or props
C21D   9/46  \	1	1	4K037	C21D   9/46	36	°	for sheet metals
C21D   9/46  E	1	0	4K037	C21D   9/46	346		Low alloy cold rolling steel plates
C21D   9/46  F	1	1	4K037	C21D   9/46	1460	⶯١̣ȡͥ	High strength (H to M take precedence)
C21D   9/46  G	1	1	4K037	C21D   9/46	1994	ù㡥ץ쥹ùѡ̣ơȡͥ	For processing, e.g. forging (F, H to M take precedence)
C21D   9/46  H	1	1	4K037	C21D   9/46	602	ɽ̽	For surface treatment
C21D   9/46  J	1	2	4K037	C21D   9/46	3287	ͻĤ㡥ͻڣĤͻĤ	For hot-dip plating, e.g. molten Zn plating, molten Al plating
C21D   9/46  K	1	2	4K037	C21D   9/46	425	ͻӣĤѡƥեݥݥ	For molten Sn plating, for tin-free steel
C21D   9/46  L	1	2	4K037	C21D   9/46	201	ۤ	For enamel
C21D   9/46  M	1	2	4K037	C21D   9/46	244	չŲ̣ͥ	Coat stain hardening properties (J takes precedence)
C21D   9/46  N	1	1	4K037	C21D   9/46	140	ɥޥ	For shadow mask
C21D   9/46  P	1	0	4K037	C21D   9/46	861		High alloy cold rolling steel plates
C21D   9/46  Q	1	1	4K037	C21D   9/46	1174	ƥ쥹	Stainless steel
C21D   9/46  R	1	2	4K037	C21D   9/46	1266	ե饤ȷ	Ferrites
C21D   9/46  S	1	0	4K037	C21D   9/46	1325	Ǯ	Low alloy rolled steel plates
C21D   9/46  T	1	1	4K037	C21D   9/46	1867	ùѡ㡥ץ쥹ùѡ̣ͥ͡	For processing, e.g. forging (U takes precedence)
C21D   9/46  U	1	1	4K037	C21D   9/46	859	ۤѡͻĤ	For enamel, molten plating
C21D   9/46  V	1	0	4K037	C21D   9/46	175	Ϣ³ߡ̣šͥ	Continuous annealing (E to U take precedence)
C21D   9/46  W	1	0	4K037	C21D   9/46	326	ʷϵߤˤʤɽ̽㡥ɻ߽	Annealing atmosphere, surface treatment of coating in annealing, e.g. treatment for prevention of graphitisation
C21D   9/46  X	1	0	4K037	C21D   9/46	45	ݥȺڤġ	For sheet material (cut plates)
C21D   9/46  Z	1	0	4K037	C21D   9/46	547	¾Τ	Others
C21D   9/46 501 \	2	2	4K033	C21D   9/46	17	ż	For electromagnetic steel plates
C21D   9/46 501 A	2	0	4K033	C21D   9/46	1476	żĤǮ	Heat treatment of electromagnetic steel plates
C21D   9/46 501 B	2	1	4K033	C21D   9/46	1410	ηȼ	Accompanied by formation of insulation coating
C21D   9/46 501 Z	2	0	4K033	C21D   9/46	20	¾Τ	Others
C21D   9/48  \	2	2	4K037	C21D   9/48	27	ʤĺ	deep-drawing sheets
C21D   9/48  E	2	0	4K037	C21D   9/48	967		Low alloy cold rolling steel plates
C21D   9/48  F	2	1	4K037	C21D   9/48	151	⶯١̣ȡͥ	High strength (H to M take precedence)
C21D   9/48  H	2	1	4K037	C21D   9/48	175	ɽ̽	For surface treatment
C21D   9/48  J	2	2	4K037	C21D   9/48	238	ͻĤ㡥ͻڣĤͻĤ	For hot-dip plating, e.g. molten Zn plating, molten Al plating
C21D   9/48  L	2	2	4K037	C21D   9/48	18	ۤ	For enamel
C21D   9/48  M	2	2	4K037	C21D   9/48	133	չŲ̣ͥ	Coat stain hardening properties (J takes precedence)
C21D   9/48  P	2	0	4K037	C21D   9/48	31		High alloy cold rolling steel plates
C21D   9/48  R	2	1	4K037	C21D   9/48	95	ե饤ȷϥƥ쥹	Ferrite stainless steel
C21D   9/48  S	2	0	4K037	C21D   9/48	193	Ǯ	Low alloy rolled steel plates
C21D   9/48  V	2	0	4K037	C21D   9/48	5	Ϣ³ߡ̣šͥ	Continuous annealing (E to S take precedence)
C21D   9/48  Z	2	0	4K037	C21D   9/48	16	¾Τ	Others
C21D   9/50  \	1	1	4K042	C21D   9/50	4	ܷѼ	for welded joints
C21D   9/50 101 \	2	2	4K042	C21D   9/50	2	Ǯˡ	Heat treatment methods
C21D   9/50 101 A	2	0	4K042	C21D   9/50	754	ݴɡ㡥˥ݴɡ	Steel pipes, e.g. electric resistance welded pipes
C21D   9/50 101 B	2	0	4K042	C21D   9/50	371	ݼ̣ͥ	Specific steel types (A takes precedence)
C21D   9/50 101 Z	2	0	4K042	C21D   9/50	395	¾Τ	Others
C21D   9/50 102 \	2	2	4K042	C21D   9/50	0	Ǯϧ	Heat treatment furnace
C21D   9/50 102 A	2	0	4K042	C21D   9/50	142	ݴɡ㡥˥ݴɡ	Steel pipes, e.g. electric resistance welded pipes
C21D   9/50 102 Z	2	0	4K042	C21D   9/50	138	¾Τ	Others
C21D   9/52  \	1	1	4K043	C21D   9/52	17	ѡȥå	for wires; for strips
C21D   9/52 101 \	2	2	4K043	C21D   9/52	901	ȥĥ	For strips
C21D   9/52 102 \	3	3	4K043	C21D   9/52	964		Cooling
C21D   9/52 103 \	2	2	4K043	C21D   9/52	186		For wires
C21D   9/52 103 A	2	0	4K043	C21D   9/52	337	ľǮ	Direct heat treatment facilities for steel wires
C21D   9/52 103 B	2	0	4K043	C21D   9/52	879	ľǮץ	Direct heat treatment processes for steel wires
C21D   9/52 103 Z	2	0	4K043	C21D   9/52	378	¾Τ	Others
C21D   9/52 104 \	3	3	4K043	C21D   9/52	305		Cooling
C21D   9/54  \	2	2	4K043	C21D   9/54	119	ȥåפޤǮϧ	Furnaces for treating strips or wire
C21D   9/56  \	3	3	4K043	C21D   9/56	17	ȥåפޤǮϢ³ϧ	Continuous furnaces for strip or wire
C21D   9/56 101 \	4	4	4K043	C21D   9/56	769	ȥĥ	For strips
C21D   9/56 101 A	4	0	4K043	C21D   9/56	1352	ȥĥפԾ֤ǤϢ³ϧ	Continuous annealing furnace with moving strips
C21D   9/56 101 B	4	1	4K043	C21D   9/56	319	ϧ	Furnace operation
C21D   9/56 101 C	4	1	4K043	C21D   9/56	745	ϧ	Furnace control
C21D   9/56 101 D	4	2	4K043	C21D   9/56	111	ľз̵ϧʷϵ	Atmosphere control of open fire non-oxidation furnaces
C21D   9/56 101 E	4	2	4K043	C21D   9/56	388	ȥĥפ®٤ޤĥϤ	Controlling speed or tensility of strips
C21D   9/56 101 F	4	1	4K043	C21D   9/56	536	ȥĥפ	Conveyance facility for strips
C21D   9/56 101 G	4	2	4K043	C21D   9/56	550	ϡݥݥ	Hearth rollers
C21D   9/56 101 H	4	1	4K043	C21D   9/56	100	ƥʥݷϢ³ϧ	Catenary type continuous annealing furnace
C21D   9/56 101 J	4	1	4K043	C21D   9/56	338	ϧΥݥ	Sealing of furnace
C21D   9/56 101 K	4	0	4K043	C21D   9/56	160	ȥĥפΥ֤ǤϢ³ϧ	Continuous annealing furnace with strips in coil form
C21D   9/56 101 Z	4	0	4K043	C21D   9/56	239	¾Τ	Others
C21D   9/56 102 \	4	4	4K043	C21D   9/56	426		For wires
C21D   9/567  \	4	4	4K043	C21D   9/567	102	ήưǲǮΡΣ	with heating in fluidised beds [3]
C21D   9/573  \	4	4	4K043	C21D   9/573	12	ѤΡΣ	with cooling [3]
C21D   9/573 101 \	5	5	4K043	C21D   9/573	360	ȥĥ	For strips
C21D   9/573 101 A	5	0	4K043	C21D   9/573	306	Ѥ줿ݥˤꥹȥĥפѤ	Cooling the strip with cooled rolls
C21D   9/573 101 Z	5	0	4K043	C21D   9/573	754	¾Τ	Others
C21D   9/573 102 \	5	5	4K043	C21D   9/573	85		For wires
C21D   9/58  \	4	4	4K043	C21D   9/58	1	ˤǮˤ	with heating by baths
C21D   9/58 101 \	5	5	4K043	C21D   9/58	30	ȥĥ	For strips
C21D   9/58 102 \	5	5	4K043	C21D   9/58	54		For wires
C21D   9/60  \	4	4	4K043	C21D   9/60	5	ͶƳǮˤ	with induction heating
C21D   9/60 101 \	5	5	4K043	C21D   9/60	243	ȥĥ	For strips
C21D   9/60 102 \	5	5	4K043	C21D   9/60	165		For wires
C21D   9/62  \	4	4	4K043	C21D   9/62	5	ľ񹳲Ǯˤ	with direct resistance heating
C21D   9/62 101 \	5	5	4K043	C21D   9/62	110	ȥĥ	For strips
C21D   9/62 102 \	5	5	4K043	C21D   9/62	342		For wires
C21D   9/63  \	4	4	4K043	C21D   9/63	348	ȥåפΥåǻٻΡΣ	the strip being supported by a cushion of gas [3]
C21D   9/64  \	3	3	4K043	C21D   9/64	60	ѥƥϧ	Patenting furnaces
C21D   9/66  \	3	3	4K043	C21D   9/66	52	ϧ	Tower-type furnaces
C21D   9/663  \	3	3	4K038	C21D   9/663	31	٥뷿ϧΣ	Bell-type furnaces [3]
C21D   9/663  A	3	0	4K038	C21D   9/663	244	ϧ	Operation of furnaces
C21D   9/663  B	3	0	4K038	C21D   9/663	86	ϧ	Control of furnaces
C21D   9/663  Z	3	0	4K038	C21D   9/663	346	¾Τ	Others
C21D   9/665  \	4	4	4K038	C21D   9/665	0	Сƥåɤޤϥɡե󥰤줿ΡΣ	inverted or side-facing [3]
C21D   9/667  \	4	4	4K038	C21D   9/667	1	ޥơϧΣ	Multi-station furnaces [3]
C21D   9/67  \	5	5	4K038	C21D   9/67	8	ޤüʷϵʪΤŬ礷ΡΣ	adapted for treating the charge in vacuum or special atmosphere [3]
C21D   9/673  \	4	4	4K038	C21D   9/673	67	°񡤤ޤϥ٥뷿ϧäεΣ	Details, accessories, or equipment peculiar to bell-type furnaces [3]
C21D   9/673  A	4	0	4K038	C21D   9/673	120	ʡݥС	Inner covers
C21D   9/673  B	4	0	4K038	C21D   9/673	127	ڡݥݡ٥	Spacers, convectors
C21D   9/673  Z	4	0	4K038	C21D   9/673	76	¾Τ	Others
C21D   9/675  \	4	4	4K038	C21D   9/675	3	ޤӽ֤Σ	Arrangements of charging or discharging devices [3]
C21D   9/677  \	4	4	4K038	C21D   9/677	10	Ǯ֤Σ	Arrangements of heating devices [3]
C21D   9/68  \	3	3	4K038	C21D   9/68	148	ϧ°봬赡Ǯִ赡ִ赡£ã	Furnace coilers; Hot coilers (cold coilers B21C 47/00)
C21D   9/70  \	1	1	4K038	C21D   9/70	354	󥴥åѤϧʤǮϧ	Furnaces for ingots, i.e. soaking pits
C21D   9/70  A	1	0	4K038	C21D   9/70	20	Ȥޤ	Operation or control
C21D   9/70  Z	1	0	4K038	C21D   9/70	16	¾Τ	Others
C21D  10/00  \	0	0	4K038	C21D  10/00	55	ǮޤϲùʳˡˤʪŪβɡΣ	Modifying the physical properties by methods other than heat treatment or deformation [3]
C21D  11/00  \	0	0	4K038	C21D  11/00	1009	ǮΥץޤĴΣ	Process control or regulation for heat treatments [2]
C21D  11/00 101 \	1	1	4K038	C21D  11/00	334	٤	Control of temperature
C21D  11/00 102 \	2	2	4K038	C21D  11/00	434	Ǯ	Heating control
C21D  11/00 104 \	2	2	4K038	C21D  11/00	182	Ǯ	Heating and cooling
C21D  11/00 105 \	1	1	4K038	C21D  11/00	344		Control of conveyance
