Cangzhou Bohai Pipe Co., Ltd. manufacturers of steel stamping elbow elbow elbow was first used in mass production of seamless forming process, at present, common specifications elbow production has been replaced by extrapolation or other hot forming process , but in some of elbow in a small number of production due to the wall thickness is too thick or too thin. When the product is still in use with special requirements. Stamping elbow and elbow using the outer diameter of the tube is equal to 20 # carbon steel elbow, using a press in a mold direct compression molding. Before pressing 20 # carbon steel elbow DN300, tube placed on the lower mold, the mold core and into the tube end, the downward movement of the upper mold starts pressing, through binding and supporting role within the mold so that the outer mold elbow shape. Hebei Bohai Pipe Co., Ltd. specializing in the production of 20 carbon steel elbow. Buy 20 carbon steel elbow went to Hebei Bohai Sea. 20 carbon steel elbow with production methods can be divided into pushing, pressing, forging, casting and so on. In manufacturing standards can be divided into GB, electricity standard, ship standard 6D20 # carbon steel elbow, of the standard, water standard, American Standard, the German standard 20 # carbon steel elbow DN800, Japanese standard, the Russian standard and so on. According to its radius of curvature to the point: it 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 outer diameter of the tube, that R = 1.5D; short radius elbow refers to its radius of curvature is equal to the pipe diameter, namely R = 1.0D. (D is the diameter of the bend, R is the radius of curvature). 1.5D20 # carbon steel elbow, 20 # carbon steel elbow, Cangzhou Bohai Bohai Sea by Cangzhou Pipe Co., Ltd.. Cangzhou Bohai Tube Co., Ltd. (www.czbh628.com) (www.hbbh628.com) strong, credible, three-way, etc. Hebei Cangzhou accumulated a large number of loyal customers. The company better work attitude and constantly improving Cangzhou Bohai innovative ideas will lead into the brilliant and you work for a better future!