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F-Term-List

4E028 Manufacture and cleaning of sheets, wires, tubes not otherwise classified
B21C37/00 -43/04;99/00
B21C37/00@A AA AA00
SHAPED STEEL 		AA01 AA03 AA05
. From pipes . H, V, C shapes . Other variants
B21C37/06@A BA BA00
MULTI-WALLED TUBES 		BA01 BA02 BA03 BA04 BA06 BA08
. Direction in which the raw materials are supplied . . Perpendicular to the tubes . . Diagonal to the tubes . . Parallel to the tubes . Variants with spaces between the layers . Other variants
B21C37/06@L;37/06@M BB BB00
WELDED TUBES 		BB01 BB02 BB03 BB04 BB05 BB07
. Measuring and controlling temperature . Local heating . Shaping and processing of the edge sections . Transporting and guiding the materials . Post-treatment of the joint sections . Other variants
B21C37/08@A-37/08@D CA CA00
SEAM WELDED TUBES, AND THE LIKE 		CA01 CA02 CA03 CA04 CA05 CA07 CA08 CA09 CA10
. Formation from sheets, strips . . Variants using rolls . . Variants that pass through dies . . Variants using presses . . Flowering indications . Roll shape and structure . . Fin pass rolls . . Internal structure . . Space shapes produced by combinations
CA11 CA13 CA14 CA16 CA18 CA20
. . Installation and drive . Welding . . Variants that are not butt joints . Edge sections . Continuous processes . Other variants
B21C37/08@E CB CB00
FORMING O-SHAPED TUBES FROM U-SHAPED TUBES (UO TUBES) 		CB01 CB02 CB04 CB06 CB08
. End section shaping prior to U shaping . End to center . Materials . Welding . Other variants
B21C37/12@A DA DA00
SPIRAL TUBES 		DA01 DA02 DA03 DA05 DA07
. Shaping by bending . Pressing and holding . Shaping and processing of the edge sections . Welding . Other variants
B21C37/15@A-37/15@C EA EA00
SPECIALLY SHAPED TUBES 		EA01 EA02 EA03 EA04 EA05 EA07
. Multiple channels . Projections . Non-circular cross sections . Change in shape along the axis . Tubes with holes . Other variants
B21C37/15@D EB EB00
ANGULAR TUBES 		EB01 EB03 EB05
. From round tubes . Variants having a single weld seam . Other variants
B21C37/16 FA FA00
TUBES WITH VARYING DIAMETERS 		FA01 FA02 FA03 FA05 FA07
. Changes in thickness . . Uniformity in diameter . . Increase in thickness . Bulging . Other variants
B21C37/18@A-37/18@C GA GA00
CONICAL TUBES 		GA01 GA02 GA03 GA04 GA05 GA07
. Mandrels . External shape . Rolls with tapered grooves . Variants based on UO tube forms . Variants based on spiral tube forms . Other variants
B21C37/20 HA HA00
SHAPING OF RIBS 		HA01 HA02 HA03 HA04 HA05 HA07
. Pressing out . Drawing . Flattening . Roll transfer . Making fins . Other variants
B21C37/22;37/24;37/26 JA JA00
RIBBED TUBES 		JA01 JA02 JA03 JA05 JA06 JA08 JA09 JA10
. Ribs parallel to the tube . Wire ribs . Extended ribs . Manufacture of ribs and fins . Rib join section expansion . Difference between internal and external diameters in helical fins . . With corrugation . . Differences in sheet thickness
JA11 JA13 JA14 JA15 JA16 JA18
. . Cutting open . Joining of ribs and fins with tubes . . Brazing . . Caulking . . Tube widening . Other variants
B21C37/29@A-37/29@C KA KA00
TUBES WITH BRANCHES 		KA01 KA02 KA03 KA04 KA05 KA07 KA09
. Internal pressure formation . Expanding of holes . Flattening . Joining of two tubes . From sheets . Measures for handling increased thinness . Other variants
B21C37/30 LA LA00
TUBE FINISHING 		LA01 LA02 LA03 LA04 LA06 LA08
. Post-treatment of joint sections . . Detection and positioning of weld sections . . Bead cutting . . Shaping . Correcting and polishing . Other variants
B21C43/00;43/04 PA PA00
CLEANING 		PA01 PA02 PA03 PA04 PA05 PA07 PA09
. Gases and liquids . Brushes, grinders . Shot impact . Roll tightening . Internal stress . Drying . Other variants
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