| IPC 6 English version | Class B21 |
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SECTION B | – PERFORMING OPERATIONS; TRANSPORTING |
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SHAPING |
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B 21 | MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL (casting, powder metallurgy B 22; shearing B 23 D; working of metal by the action of a high concentration of electric current B 23 H; soldering, welding, flame-cutting B 23 K; other working of metal B 23 P; punching sheet material in general B 26 F; processes for changing of physical properties of metals C 21 D, C 22 F; electroforming C 25 D 1/00) |
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Notes |
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(1) | This class does not cover: |
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– | combinations of operations covered by different subclasses of class B 21, which are covered by subclass B 23 P; |
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– | combinations of operations covered by any particular subclass of class B 21 with operations covered by other classes, e.g. with operations involving removal of material, which are also covered by subclass B 23 P, except that if the operations covered by the other classes are subsidiary to the operations properly covered by a single subclass of B 21 the combination is classified in that subclass. |
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(2) | Processes of a kind covered by this class but applied to non-metallic materials are classified in this class if they are applicable to metal and cannot be classified fully in another class. |
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ROLLING OF METAL (auxiliary operations used in connection with metal-working operations covered in B 21, see B 21 C; bending by rolling B 21 D; manufacture of particular objects, e.g. screws, wheels, rings, barrels, balls, by rolling B 21 H; pressure welding by means of a rolling mill B 23 K 20/04) |
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MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL |
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WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING (operations of the kind involved in the manufacture of such products B 21 B, B 21 C; working or processing of wire B 21 F; cutting or severing devices or machines in general B 26; presses in general B 30 B) |
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WORKING OR PROCESSING OF WIRE (rolling of metal B 21 B; by drawing, auxiliary operations used in connection with metal-working without essentially removing material B 21 C; bundling articles B 65 B 13/00) |
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MAKING NEEDLES, PINS, OR NAILS |
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MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS (essentially from sheet metal B 21 D) |
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FORGING; HAMMERING; PRESSING; RIVETING; FORGE FURNACES (rolling of metal B 21 B; making particular products by forging or pressing B 21 K; cladding or plating B 23 K; finishing surfaces by hammering B 23 P 9/04; compacting surfaces by blasting with particulate material B 24 C 1/10; general features of presses, presses for consolidating scrap B 30 B; furnaces in general F 27) |
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MAKING FORGED OR PRESSED PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS, WHEELS (making particular articles by working sheet metal without essentially removing material B 21 D; processing wire B 21 F; making pins, needles or nails B 21 G; making particular articles by rolling B 21 H; forging machines, pressing machines, hammering machines, in general B 21 J; making chains B 21 L; plating B 23 K) |
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MAKING CHAINS (chains in general F 16 G) |
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