ข้อมูลสัญลักษณ์จำแนกการออกแบบผลิตภัณฑ์ระหว่างประเทศ


รหัส / code คำอธิบาย / code name Version
B21J0005000000 Methods for forging, hammering, or pressing (for working sheet metal or metal tubes, rods, or profiles B21D; for working wire B21F); Special equipment or accessories therefor 1
B21J0005020000 Die forging; Trimming by making use of special dies 1
B21J0005040000 by directly applied fluid pressure or explosive action 1
B21J0005060000 for performing particular operations 1
B21J0005080000 Upsetting 1
B21J0005100000 Piercing billets (in combination with extrusion B21C0023000000) 1
B21J0005120000 Forming profiles on internal or external surfaces (making screw-thread by forging, pressing, or hammering B21K) 1
B21J0007000000 Hammers; Forging machines with hammers or die jaws acting by impact (hand hammers B25D; electrical features section H); 1
B21J0007020000 Special design or construction 1
B21J0007040000 Power hammers 1
B21J0007060000 Drop hammers 1
B21J0007080000 with rigidly-guided hammer 1
B21J0007100000 with both drive and hammer connected to a fulcrumed lever, e.g. tail hammers 1
B21J0007120000 the lever being a spring, i.e. spring hammers 1
B21J0007140000 Forging machines working with several hammers 1