ข้อมูลสัญลักษณ์จำแนกการออกแบบผลิตภัณฑ์ระหว่างประเทศ


รหัส / code คำอธิบาย / code name Version
F22B0003060000 by transformation of mechanical, e.g. kinetic, energy into heat energy 1
F22B0003080000 at critical or supercritical pressure values 1
F22B0005000000 Steam boilers of drum type, i.e. without internal furnace or fire tubes, the boiler body being contacted externally by flue gas 1
F22B0005020000 with auxiliary water tubes outside the boiler body 1
F22B0005040000 Component parts thereof; Accessories therefor (covers or similar closure members for pressure vessels in general F16J0013000000) 1
F22B0007000000 Steam boilers of furnace-tube type, i.e. the combustion of fuel being performed inside one or more furnace tubes built-in in the boiler body 1
F22B0007020000 without auxiliary water tubes 1
F22B0007040000 with auxiliary water tubes 1
F22B0007060000 inside the furnace tube in transverse arrangement 1
F22B0007080000 inside the furnace tube in longitudinal arrangement 1
F22B0007100000 outside the boiler body 1
F22B0007120000 with auxiliary fire tubes; Arrangement of header boxes providing for return diversion of flue gas flow 1
F22B0007140000 with both auxiliary water tubes and auxiliary fire tubes 1
F22B0007160000 Component parts thereof; Accessories therefor, e.g. stay-bolt connections 1
F22B0007180000 Walling of flues; Flue-gas header boxes 1