Standard API, ASTM, BS, DIN, GB, JIS Outside Diameter 21.3-1420mm Wall Thickness 2.11-300mm Dia Tolerance Control with in the standard, OD:+-1%, WT:+....
bend and Alloy elbow of P91 Brand Name Yatong Application Fluid Pipe, Boiler Pipe, Drill Pipe, Hydraulic Pipe, Gas Pipe, OIL PIPE, Chemical Fertilizer ...