Cangzhou Bohai Steel Tube Co., Ltd. specializes in elbow 12Cr1MoV steel, unified digital code: A31132. Standard: GB / T3077-1999 main features 12Cr1MoV 12CrMoV alloy steel and alloy steel elbow pipe sales compared with higher oxidation resistance and heat resistance. Creep limit and lasting value 12Cr1MoV strength steel alloy steel elbow manufacturers are very close, and in the case of persistent tension has high plasticity; steel manufacturability and good weldability, but before welding to be preheated to 300 ℃, In addition to the stress treatment required after welding. Cangzhou Bohai Pipe Co., Ltd. specializing in the production of alloy steel elbow formula [(OD - Wall Thickness) * Thickness] * 0.02466 = kg / m (weight per meter) alloy pipe dimensions and tolerances P22 alloy tube process overview Thermal rolled (extruded seamless pipe): round tube → heating → perforation → three-roll rolling, rolling or extrusion → → set off pipe diameter (or reducing) → cooling → billet tube → straightening → hydrostatic test (or testing) → mark → storage. Cold drawn (rolled) seamless steel pipe: round tube → heating → perforation → Heading → annealing → pickling → oiled (copper) → multi-pass cold drawn (cold) → billet tube → heat treatment → straightening → hydrostatic testing (testing) → mark → storage. Alloy steel elbow manufacturers, Binzhou alloy steel elbow, Ltd. Cangzhou Bohai Bohai Sea by Cangzhou tube. 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!