Gold Pipe Manufacturing Co., Ltd. Hebei billion (www.yijinguanjian.com) is located in Cangzhou City, Hebei Province, Yanshan Puwa Industrial Development Zone, Contact: Alan Li Tong Hebei billion gold "credibility hit the market, relying on quality into the world" is my factory philosophy and based on the book, we will be good quality welded elbow manufacturers, preferential price, full of variety and shorter delivery time, to provide you with quality services. I always adhere to: quality-oriented high efficiency; high credibility to German-based; tech people-oriented; quality law-based, with the constitution of management philosophy, to produce high quality products back to customers. We will be reasonable prices, timely service, strict quality, integrity and responsible attitude, to provide customers with first-class products. Butt welded elbow elbow manufacturing standards are forged steel hot forming or molding of the elbow, which is directly connected to form the elbow and pipe welding, butt welding elbow major manufacturing standards generally GB / T12459, GB/T13401, ASME B16.9, SH3408, SH3409, HG/T21635, HG/T21631, SY/T0510. 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, that R = D. Where D is the diameter stainless steel butt welded elbow elbow manufacturers, R is the radius of curvature. 2) by the angle of the elbow, 45 degree welded elbow, elbow 90 degrees and 180 degrees butt welded elbow. Butt resistance welding elbow butt welding process is the use of resistance heat to bend the pipe welded together along the entire end face while a class of resistance welding methods. Butt high productivity, easy to automate, and thus widely available. When resistance welding, pipe bends and end shapes and sizes should be the same, in order to ensure consistent heating and plastic deformation of the workpiece. End face of the welded elbow pipe elbow, as well as contact with the surface of the clamp must be strictly cleaned. End surface oxides and swag will directly affect the quality of the joint. Oxides and booty elbow pipe surface in contact with the clamp will increase the contact resistance at the workpiece surface burns, increased jaw wear and increases power consumption. Resistance welding joints prone oxide inclusions. High quality requirements for welding pipes, often using argon, helium and other protective atmosphere to resolve.