... * 9-12 Productsseamless steel pipe, low alloy steel pipe, carbon steel pipeTechnicshot-rolledStandardGB/T8162,8163,17396,API Spec 5CT, 5L and equivalent standardsDIN1626, DIN1629 ... (Chinese Grades: 20#, 45#, Q345B, 27SiMn,40Cr, 35CrMo and 42CrMo)Markingnon-removal stencil marking with standard, specifcation and steel grade. schedule 40 steel pipe for construction