The mounds Q235B elbow Which is the most authoritative, Hebei the Hengtai most authoritative carbon steel elbow where most professional? The Hebei HENGTAI is your first choice! Qi Shuai 15175715789 butt elbow English (Welded elbow) steel hot press molding or forging molding elbow connection form is the butt elbow directly elbow with steel pipe butt, butt welding elbow manufacturing standards generally GB/T13401-2005, ASME B16.9, SH3409, HG/T21635, HG/T21631, SY/T0510, GB/T10752-1995. Edit this paragraph (1) butt butt elbow classification elbow its radius of curvature points, can be divided into long radius butt weld elbows and short radius butt weld elbow. The long radius equal to 1.5 times the radius of curvature of the butt welding elbow pipe diameter, i.e. R = 1.5D. Short radius butt weld elbow radius of curvature equal to the outside diameter of pipe, that is R = 1D. Where D is the diameter of the butt welding elbow, R is the radius of curvature. If no special instructions, is generally used in a 1.5D elbow. (2) pressure levels, about seventeen, and tube standards in the United States is the same,: Sch5s, Sch10s Sch10, Sch20, Sch30, Sch40s, STD, Sch 40 has an Sch60 Sch80s, XS; Sch80 , Sch100, Sch120, Sch140, Sch160, XXS, one of the most commonly used in both the STD and XS. (3) by the angle of the elbow, a 45-degree butt weld elbow, a 90 degree butt weld bends and 180-degree butt weld elbow and a different angle of the elbow. (4) Materials: carbon steel, alloy steel and stainless steel. Edit this paragraph Japanese Standard Standard No. Description JIS B2311 Universal steel welding pipe fittings JIS B2312 steel welding pipe fittings of steel plate welded pipe fittings JIS B2313 JIS B2316 steel socket welding pipe fittings pipe fittings implementation of the standards of American standards: Standards No. Description ASME / ANSI B16.9 factory manufacturing forged steel pipe fittings on ASME / ANSI B16.11 socket welding and threaded forged pipe fittings ASME / ANSI B16.28 steel welded small radius bend and back bend ASME B16.5 Pipe Flanges MSS SP-43 Wrought stainless steel and flanged fittings Butt Welding Fittings MSS SP-79 socket welding reducer inserts MSS SP-83 socket welding and the threaded wood joints MSS SP-97 socket welding, threaded and butt end of a whole strengthen Headers Power Standard Standard No. DL/T515-93 power station Bend D-GD87-1101 pipeline parts and description of the parts and components of GB2000 thermal power plants Water Pipe typical design manual