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ข้อมูลสัญลักษณ์จำแนกการออกแบบผลิตภัณฑ์ระหว่างประเทศ

รหัส / code คำอธิบาย / code name Version
F28F0009100000 by screw-type connections, e.g. gland 1
F28F0009120000 by flange-type connections 1
F28F0009140000 by force-joining 1
F28F0009160000 by permanent joints, e.g. by rolling (metal-working procedures in general B21, B23, particularly B21D0039060000, B23K) 1
F28F0009180000 by welding 1
F28F0009200000 Arrangements of heat reflectors, e.g. separately-insertible reflecting walls 1
F28F0009220000 Arrangements for directing heat-exchange media into successive compartments, e.g. arrangements of guide plates 1
F28F0009240000 Arrangements for promoting turbulent flow of heat-exchange media, e.g. by plates (F28F0001380000 takes precedence;in general F15D) 1
F28F0009260000 Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators (connecting different sections in water heaters F24H0009140000) 1
F28F0011000000 Arrangements for sealing leaky tubes or conduits (stopping flow from or in pipes in general F16L0055100000) 1
F28F0011020000 using obturating elements, e.g. washers, inserted and operated independently of each other (F28F0011060000 takes precedence);; 1
F28F0011040000 using pairs of obturating elements, e.g. washers, mounted upon central operating rods (F28F0011060000 takes precedence);; 1
F28F0011060000 using automatic tube-obturating appliances 1
F28F0013000000 Arrangements for modifying heat transfer, e.g. increasing, decreasing (F28F0001000000-F28F0011000000; take precedence);; 1
F28F0013020000 by influencing fluid boundary (boundary-layer control in general F15D) 1
จำนวนรหัสข้อมูล 15 จาก 73902