| ReturnTo Theme-Group-Choice | Onelevelup |
| 4K014 | Refinement of pig-iron, manufacture of cast iron, and steel manufacture other than in revolving furnaces | |
| C21C1/00 -3/00;5/02-5/06;5/52-5/56 | ||
| C21C1/00;1/02;1/02@L;1/02@Z;1/02,101-1/02,110;1/04;1/04,101;1/06 | AA | AA00 PURPOSE OF REFINING |
AA01 | AA02 | AA03 | |||||||
| . Removal of silicon | . Desulfurising | . Dephosphorising | ||||||||||
| AB | AB00 PROCESSING AND ADDITIVES |
AB01 | AB02 | AB03 | AB04 | AB06 | AB08 | AB09 | ||||
| . Chemical compounds | . . Oxidants | . . . Quicklime (CaO) | . . . Ferrous oxide | . . Hydroxides | . . Carbides | . . . Calcium carbide (CaC2) | ||||||
| AB11 | AB12 | AB13 | AB15 | AB16 | AB18 | |||||||
| . . Carbonates | . . . Limestone (CaCO3) | . . . Soda ash (Na2CO3) | . . Halides | . . . Fluorite (CaF2) | . Carbon | |||||||
| AB21 | AB28 | |||||||||||
| . Metals and alloys | . Processing and shape formation | |||||||||||
| AC | AC00 METHODS OF PROCESSING AND ADDITION |
AC01 | AC03 | AC04 | AC08 | |||||||
| . Time processing | . Multi-level processing | . . Continuous processing | . Agitation processing methods | |||||||||
| AC11 | AC12 | AC13 | AC14 | AC16 | AC17 | |||||||
| . Use of gases | . . Use of gas mixtures | . . . Use of similar gases | . . . Use of gases and powders | . . Blowing of gases through the bath | . . Blowing of gases from above | |||||||
| AD | AD00 PROCESSING AND ADDITION DEVICES |
AD01 | AD02 | AD03 | AD04 | AD06 | ||||||
| . Iron mixing beds | . . Furnaces | . . . Shape formation | . . . Alignment | . . Dollying, supporting and tilting | ||||||||
| AD12 | AD13 | AD14 | AD15 | AD16 | AD17 | |||||||
| . . Supplementary equipment | . . . Dust collectors | . . . Lime wash, dross discharge, or weld removal equipment | . . . lidding or warming equipment | . . . Power connection equipment | . . . Measuring equipment | |||||||
| AD21 | AD23 | AD25 | AD27 | |||||||||
| . Iron mixing furnaces | . Ladles | . Conduits | . Nozzles or lances | |||||||||
| AE | AE00 OTHERS |
AE01 | ||||||||||
| . Dross processing | ||||||||||||
| C21C1/08;1/10;1/10@A;1/10@B;1/10@Z;1/10,101-1/10,103 | BA | BA00 MANUFACTURED CAST IRON |
BA01 | BA02 | BA03 | BA04 | BA06 | BA08 | BA10 | |||
| . Spheroidal graphite cast iron | . . Spheroidal graphite pig iron | . . Non-treated ferrite textures | . . Perlite textures | . . Compacted cast iron | . Gray pig iron | . Malleable cast iron | ||||||
| BA11 | BA13 | BA16 | ||||||||||
| . Chill-cast materials or non-chill-cast materials | . Special materials | . Special formation materials | ||||||||||
| BB | BB00 MAIN MATERIALS |
BB01 | BB02 | BB03 | BB06 | BB08 | ||||||
| . Pig iron melted in a blast furnace | . Reduced iron | . Filings or debris from cutting | . Specially formed materials | . Processed or shaped materials | ||||||||
| BC | BC00 MEANS OF PROCESSING AND MANUFACTURING |
BC01 | BC02 | BC04 | BC06 | |||||||
| . Melting | . . Melting by means of a cupola | . Gas blow-through or agitation | . Heat processing | |||||||||
| BC11 | BC12 | BC13 | BC14 | BC15 | ||||||||
| . Use of additives or treating agents | . . Use of spheroidal graphitizing agents | . . Use of an inoculant | . . Use of a graphitizer | . . Use of ingredient adjusting agents or refining agents | ||||||||
| BD | BD00 PROCESSING AGENTS AND ADDITIVES |
BD01 | BD02 | BD03 | BD04 | BD05 | BD07 | BD08 | BD10 | |||
| . Chemical compounds | . . Oxidants | . . Carbonized agents | . . Carbonates | . . Halogenized agents | . Carbon | . Metals or alloys | . Manufactured or shape formulated agents | |||||
| BE | BE00 SPHEROIDAL GRAPHITIZING AGENTS AND INOCULANT ADDITION METHODS AND DEVICES |
BE01 | BE02 | BE03 | BE04 | BE05 | BE06 | BE08 | ||||
| . Pouring or sandwiching methods | . Plunger methods | . In-mold methods | . Converter methods | . Wire methods | . Heat addition methods | . Conduit devices | BF | BF00 OTHERS |
||||
| C21C5/52;5/54 | CA | CA00 MANUFACTURED STEEL |
CA01 | CA03 | CA04 | |||||||
| . Carbon steel | . Steel alloys | . . Steel with chromium | ||||||||||
| CB | CB00 MATERIALS |
CB01 | CB02 | CB03 | CB05 | CB07 | CB09 | |||||
| . Main materials | . . Reduced iron | . . Dust, sludge, or turnings | . Secondary materials | . Excess heat or dryness | . Processed or shape formulated materials | |||||||
| CC | CC00 ELECTRIC FURNACE OPERATION |
CC01 | CC02 | CC04 | CC05 | CC07 | CC09 | |||||
| . Use of burners or gas | . . Use of gas mixtures | . Use of direct electric current | . Use of plasma arcs | . Slag regulation | . Atmosphere regulation | |||||||
| CD | CD00 EQUIPMENT |
CD01 | CD02 | CD03 | CD04 | CD07 | CD09 | |||||
| . Electric furnaces | . . Shape forming | . . Alignment | . . Cooling | . Equipment using numerous furnaces | . Continuous-production steel equipment | |||||||
| CD11 | CD12 | CD13 | CD14 | CD15 | CD16 | CD18 | CD19 | |||||
| . Supplementary equipment | . . Electrodes | . . Charging | . . Exhaust | . . Furnace lids | . . Anti-dust or exhaust gas processing | . . Nozzles or lances or burners | . . Agitation equipment | |||||
| CE | CE00 OTHERS |
CE01 | ||||||||||
| . Dross processing | ||||||||||||
| C21C5/56 | DA | DA00 OTHER STEEL MANUFACTURING METHODS |
DA01 | DA04 | DA07 | |||||||
| . Continuous steel processing | . Use of a rotary kiln | . Direct steel processing |