... pipe wall thickness 1. MOQ 10T 2. ISO9001 and API 5L 5CT 3.Customized pipes 4. OD89-273* ... steel pipeTechnicshot-rolledStandardGB/T8162,8163,17396,API Spec 5CT, 5L and equivalent standardsDIN1626, DIN1629/3, 4, DIN17175, ASTMOuter Diameter5 ... 45#, Q345B, 27SiMn,40Cr, 35CrMo and 42CrMo)Markingnon-removal stencil marking with standard, specifcation and steel grade. schedule 40 steel pipe for construction