】 【Long radius elbow, long radius elbow mounds supplier, provided by Hebei Hebei Cathay Cathay. Cathay Pacific Pipeline Equipment Co., Ltd. Hebei (www.hbgtgd.com) had been "Business League certification", please rest assured purchase through the entire network, click on the page check "Business League certification icon," the company authentication information. You can also click on the "Business League Service Icons" on this page directly contact our customer service! The American Standard Pipe: Standard Number Description ASME / ANSI B16.9 factory-made forged pipe fittings ASME / ANSI B16.11 socket welding and threaded forged pipe fittings ASME / ANSI B16.28 steel welded small radius bends head and back bends ASME B16.5 Pipe Flanges and Flanged Fittings MSS SP-43 Forged steel pipe fittings MSS SP-79 socket welding reducer inserts MSS SP-83 socket welding and threaded union MSS SP- 97 socket welding, threaded and butt end of the overall strengthening of the elbow pipe seat first by its radius of curvature to points, can be divided into long radius elbows and short radius elbows. It refers to the long radius bend radius of curvature equal to 1.5 times the pipe diameter longtime wholesale long radius elbows, namely R = 1.5D. Short radius elbow refers to its radius of curvature equal to the pipe diameter long radius elbow mounds suppliers, namely R = 1.0D. (D is the diameter of the bend, R is the radius of curvature) when the pressure level at points, about seventeen kinds of long radius elbows, and the U.S. standard pipe is the same, there are: Sch5s, Sch10s, Sch10, Sch20, Sch30, Sch40s, STD, Sch40, Sch60, Sch80s, XS; Sch80, Sch100, Sch120, Sch140, Sch160, XXS, which is the most common STD and XS two kinds. According to the angle of the elbow with 45 ° elbow with 90 ° and 180 ° elbow bend. Implementation of standards GB/T12459-2005, GB/T13401-2005 and so on.