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ข้อมูลสัญลักษณ์จำแนกการออกแบบผลิตภัณฑ์ระหว่างประเทศ

รหัส / code คำอธิบาย / code name Version
F28F DETAILS OF HEAT-EXCHANGE OR HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION (heat-transfer, heat-exchange or heat-storage materials C09K0005000000; water or air traps, air venting F16) 1
F28F0001000000 Tubular elements; Assemblies of tubular elements (specially adapted for movement F28F0005000000) 1
F28F0001020000 Tubular elements of cross-section which is non-circular (F28F0001080000, F28F0001100000 take precedence);; 1
F28F0001040000 polygonal, e.g. rectangular 1
F28F0001060000 crimped or corrugated in cross-section 1
F28F0001080000 Tubular elements crimped or corrugated in longitudinal section 1
F28F0001100000 Tubular elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses (crimped or corrugated elements F28F0001060000, F28F0001080000) 1
F28F0001120000 the means being only outside the tubular element 1
F28F0001140000 and extending longitudinally (F28F0001380000 takes precedence);; 1
F28F0001160000 the means being integral with the element, e.g. formed by extrusion (F28F0001220000 takes precedence);; 1
F28F0001180000 the element being built-up from finned sections 1
F28F0001200000 the means being attachable to the element (F28F0001220000 takes precedence);; 1
F28F0001220000 the means having portions engaging further tubular elements 1
F28F0001240000 and extending transversely (F28F0001380000 takes precedence);; 1
F28F0001260000 the means being integral with the element (F28F0001320000 takes precedence);; 1
จำนวนรหัสข้อมูล 15 จาก 73902