Hebei Bohai Tube Co., Ltd. specializes in producing carbon steel elbow 20. Buy 20 carbon steel elbow went to Hebei Bohai Sea. The basic process of carbon steel elbow 20: According to its radius of curvature can be divided into long radius elbows and short radius elbows. Long radius elbow refers to its radius of curvature is equal to 1.5 times the pipe diameter, i.e. R = 1.5D. Short radius elbow refers to its radius of curvature equal to the pipe diameter, ie R = 1.0D. (D is the bend diameter, R is the radius of curvature) when pressing force rating points, about seventeen kinds, and U.S. standard pipes are 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 bend points, 45 ° elbow, there are 90 ° and 180 ° elbow bend. Implementation of standards GB / T12459-2005, GB / T13401-2005, HG / T21635-1987, D-GD0219 and so on. Hebei Bohai Tube Co., Ltd. specializes in producing carbon steel elbow 20. Buy 20 carbon steel elbow went to Hebei Bohai Sea. About 90 degree elbow welded steel precautions hot topic, people's opinions differ, I steel elbow | GB elbow manufacturer with years of rich experience in production of welded carbon steel elbow GB Note this topic has its own unique Hebei Road 20 # carbon steel seamless opinions elbow plant, the following is the topic of our own view point, I hope you can help. 1, in order to prevent carbon steel elbow because of heat generated between the eyes erosion 20 # carbon steel elbow manufacturers, welding current is not too large, less than about 20% carbon steel electrode, the arc should not be too rapid cooling interlayer Shanghai 20 # carbon steel elbow manufacturers to narrow weld appropriate. 2, after welding steel 90 degree elbow sclerosing large, easy to crack. The use of the same type after stamping elbow welding, it is necessary carry out more than 300 ℃ preheating and welding slow cooling treatment 700 ℃ about. If the weldment after weld heat treatment is not possible. Carbon steel welding rod should be used elbow. Long radius 20 # carbon steel elbow factory _20 # carbon steel elbow _ Cangzhou Bohai Ltd. provided by Cangzhou Bohai fittings. Cangzhou Bohai Pipe Fittings Co., Ltd. (www.czbh628.com) strong, credible, and other industries in Hebei Cangzhou tee accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Cangzhou Bohai and you hand into the brilliant, for a better future!