Supply 90 degree threaded elbow, stainless steel elbow the Hongyuan pipe industry Co., Ltd. supply butt elbow / large diameter butt elbow Price / Hebei butt the elbow (Contact: Feng Hongmei Contact: 15,932,713,817 QQ: 1,763,757,819) large caliber butt elbow steel hot press molding or forging molding elbow, it is in the form of connection is directly to the elbow and steel pipe butt, large diameter butt elbow manufacturing standards are generally of GB/T12459 GB/T13401, ASME B16.9, SH3408, SH3409, HG/T21635, HG/T21631, SY/T0510, GB/T10752-1995. Large diameter butt elbow main purposes: large diameter butt elbow used to connect two sections of different end face of the radius of the pipeline, or for the diameter of the pipe to change. This type of elbow generally need to be produced according to specific project requirements or specific drawings, In addition to satisfying the requirements of the pipe diameter, must also consider the specific circumstances of the pipeline, such as piped pressure, fluid viscosity, abrasion, corrosion, fluid transport temperature and many other factors. Usually butt elbow welding in pipeline construction site, this is due to the different standards of all types of pipe welding, spot welding pipe welds grade. The large caliber butt elbow classified: butt welding elbow its radius of curvature points, divided into long radius butt Elbow 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 a butt weld elbow diameter, R is the radius of curvature; pressure level, about seventeen, and tube standards in the United States is the same, there are: SCH5S, Sch10s sch10 Sch20 Sch30 Sch40s, STD, Sch40, Sch60, Sch80s, XS; Sch80, Sch100, Sch120, Sch140, Sch160, XXS, one of the most commonly used in both STD and XS; the angle of the elbow 45 degrees butt elbow 90 degrees butt elbow and a 180-degree butt elbow, material: carbon steel, alloy steel and stainless steel.