Hebei Bohai Tube Co., Ltd. specializes in producing carbon steel elbow 20. Buy 20 carbon steel elbow went to Hebei Bohai Sea. 20 carbon steel elbow manufacturer for carbon steel elbow needs normalizing heat treatment, machining port 20 # carbon steel elbow, leaving the burning wall thickness required machining allowances. Usually the balance of the theoretical thickness of the elbow 10% to 20%. Elbow-sectional diameter and wall thickness δ D ratio is smaller, the better the performance and fit the mold, but inside the arc bends more easily wrinkling. The metal plastic deformation during constant volume, pushing molding constant wall thickness (actual micro-thinning), equal to the length of the outer arc tube elbow length features short radius 20 # carbon steel elbow, push the system deduced tube outer diameter formula: If the actual choice of tube diameter ratio calculated according to the formula Dp value is small, and fit the mold of good performance, but within easy wrinkling elbow arc. If the actual selection of the tube outer diameter is larger than the calculated according to the formula Dp value, the result is just the opposite. Seamless carbon steel elbow elbow is very common to use a material, inexpensive, easy to use. Material is divided into: low-carbon steel, carbon steel 4 times 20 # carbon steel elbow, high carbon steel, 20 steel (20g), q235a, q235b etc., is characterized by a relatively high carbon content; divided by the standard : GB, non-standard, international standards: DIN, JIS 180 20 # carbon steel elbow, American Standard, the British standard elbow. Seamless carbon steel elbow seamless steel raw materials are the main production processes for round tube → heating → perforation → three-roll rolling, rolling or extrusion → → set off pipe diameter (or reducing) → cooling → straightening → hydrostatic test (or testing) → mark → storage. schxx wall thickness grade, 90e (s) for short radius 90 degree carbon steel elbow; 90e (l), said long radius 90 degree elbow; 45e (l), said long radius 45 degree elbow; 45e (s) for short radius 45 degree elbow; 180e (s) for short radius of 180 degrees carbon steel elbow; 180e (l), said long radius bend 180 degrees; 20 # carbon steel long radius elbows, Weifang 20 # carbon steel elbow, Cangzhou Bohai Sea by Cangzhou Bohai Pipe Fittings Limited. 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!