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ข้อมูลสัญลักษณ์จำแนกการออกแบบผลิตภัณฑ์ระหว่างประเทศ

รหัส / code คำอธิบาย / code name Version
F22B0023060000 Component parts thereof, e.g. Field water tubes (heat-exchange tubes in general F28F) 1
F22B0025000000 Water-tube boilers built-up from sets of water tubes with internally-arranged flue tubes, or fire tubes, extending through the water tubes 1
F22B0027000000 Instantaneous or flash steam boilers 1
F22B0027020000 built-up from fire tubes 1
F22B0027040000 built-up from water tubes (F22B0027120000-F22B0027160000; take precedence);; 1
F22B0027060000 bent in serpentine or sinuous form 1
F22B0027080000 bent helically, i.e. coiled 1
F22B0027100000 bent spirally 1
F22B0027120000 built-up from rotary heat-exchange elements, e.g. from tube assemblies 1
F22B0027140000 built-up from heat-exchange elements arranged within a confined chamber having heat-retaining walls 1
F22B0027160000 involving spray nozzles for sprinkling or injecting water particles on to or into hot heat-exchange elements, e.g. into tubes 1
F22B0029000000 Steam boilers of forced-flow type 1
F22B0029020000 of forced-circulation type 1
F22B0029040000 of combined-circulation type, i.e. in which convection circulation due to the difference in specific gravity between cold and hot water is promoted by additional measures, e.g. by injecting pressure-water temporarily 1
F22B0029060000 of once-through type, i.e. built-up from tubes receiving water at one end and delivering superheated steam at the other end of the tubes (F22B0033000000 takes precedence);; 1
จำนวนรหัสข้อมูล 15 จาก 73902