Welded elbow Classification (1) welded elbow according to its radius of curvature can be divided into long and short radius bend radius butt welded elbow. The radius of curvature of long radius welded elbow is equal to 1.5 times the pipe diameter, ie R = 1.5D. Short radius of curvature equal to the radius of the pipe diameter welded elbow, ie R = 1D. Wherein the diameter D of welded elbow, R is the radius of curvature. If no special instructions, generally used in the 1.5D elbow. (2) In terms of pressure levels to points, about seventeen kinds, and the United States is the same as the standard welded pipe elbow manufacturers,: Sch5s, Sch10s, Sch10, Sch20, Sch30, Sch40s, STD, Sch40, Sch60, Sch80s, XS; Sch80, Sch100, Sch120, Sch140, Sch160, XXS spot welded elbow, which is the most common STD and XS two kinds. (3) according to the angle of the elbow, 45 degree elbow mounds butt welded elbow, 90 degree and 180 degree elbow butt welded elbow, and other different angles of the elbow. (4) Materials: carbon steel, alloy steel and stainless steel. Butt weld dissimilar metals used in the elbow can save precious metal, forward product function. Welded elbow is a pipe in one, elbow pipe use is increasingly common in the pipeline construction process, mainly because of its shape, and strong pressure resistance welding in the form of simple features to ensure pipeline bearing capacity, so the process piping engineering, especially in the petrochemical industry and other high-temperature high-pressure pipeline and explosive, rational use of pipe fittings and quality directly itself plays an important role. Butt weld elbow applied to the ring artifacts such as car and bicycle rims, motorcycle rim butt, butt, etc. all kinds of chain link. Butt welding elbow butt roughly applied to parts of the rolling, forging, stamping or machined parts into a giant large part to the completion of the low. For example, the underlying purpose butt car axle housings and rear axle housing, a variety of rod, rod butt, butt, etc. as well as special parts. [Butt] elbow, butt welding elbow spot, Hebei billion gold piping supplied by Hebei billion gold piping. Welcome to consult Hebei billion Gold Pipe Manufacturing Co. (www.yijinguanjian.com), be sure to specify when contact is through the "Business Alliance Member" see, thank you! Contact: Alan Li Tong