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ข้อมูลสัญลักษณ์จำแนกการออกแบบผลิตภัณฑ์ระหว่างประเทศ

รหัส / code คำอธิบาย / code name Version
F22B0037600000 specially adapted for steam boilers of instantaneous or flash type 1
F22B0037620000 specially adapted for steam boilers of forced-flow type 1
F22B0037640000 Mounting of, or supporting arrangements for, tube units (construction of tube walls of furnaces, e.g. boiler furnaces F23M0005080000) 1
F22B0037660000 involving vertically-disposed water tubes 1
F22B0037680000 involving horizontally-disposed water tubes 1
F22B0037700000 Arrangements for distributing water into water tubes 1
F22B0037720000 involving injection devices 1
F22B0037740000 Throttling arrangements for tubes or sets of tubes 1
F22B0037760000 Adaptations or mounting of devices for observing existence or direction of fluid flow (devices per seG01P) 1
F22B0037780000 Adaptations or mounting of level indicators (level indicators per seG01F) 1
F22D PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER; FEED-WATER SUPPLY; CONTROLLING WATER LEVEL; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN BOILERS(chemical treatment of water, e.g. purification, C02F; enclosed heat-exchange apparatus in general F28D; controlling in general G05) 1
F22D0001000000 Feed-water heaters, e.g. preheaters 1
F22D0001020000 with water tubes arranged in the boiler furnace, fire tubes, or flue ways (heat-exchange tubes in general F28F) 1
F22D0001040000 the tubes having plain outer surfaces, e.g. in vertical arrangement 1
F22D0001060000 in horizontal arrangement 1
จำนวนรหัสข้อมูล 15 จาก 73902