ข้อมูลสัญลักษณ์จำแนกการออกแบบผลิตภัณฑ์ระหว่างประเทศ


รหัส / code คำอธิบาย / code name Version
F22D0001080000 the tubes having fins, ribs, gills, corrugations, or the like on their outer surfaces, e.g. in vertical arrangement 1
F22D0001100000 in horizontal arrangement (hollow fire-bars, grates, or the like used as water tubes F23H0003020000) 1
F22D0001120000 Control devices, e.g. for regulating steam temperature 1
F22D0001140000 Safety or venting devices (safety devices for boilers in general F22B0037420000) 1
F22D0001160000 with water tubes arranged otherwise than in the boiler furnace, fire tubes, or flue ways 1
F22D0001180000 and heated indirectly 1
F22D0001200000 and directly connected to boilers 1
F22D0001220000 and provided for rotary movement 1
F22D0001240000 with fire tubes or flue ways traversing feed-water vessels 1
F22D0001260000 with means, other than tubes, to separate water and heating medium, e.g. bulk heaters without internal flues or tubes, jacketted smoke-boxes or flues 1
F22D0001280000 for direct heat transfer, e.g. by mixing water and steam 1
F22D0001300000 with stages, steps, baffles, dishes, circular troughs, or other means to cause interrupted or cascading fall of water 1
F22D0001320000 arranged to be heated by steam, e.g. bled from turbines 1
F22D0001340000 and returning condensate to boiler with main feed supply 1
F22D0001360000 Water and air preheating systems 1