... Customized pipes 4. OD89-273*WT7-50 schedule 40 steel pipe wall thickness 133*14-25140*14-32146*14-32151 ... -12 Productsseamless steel pipe, low alloy steel pipe, carbon steel pipeTechnicshot-rolledStandardGB/T8162,8163,17396,API Spec 5CT, 5L and equivalent standardsDIN1626, DIN1629 ... )Markingnon-removal stencil marking with standard, specifcation and steel grade. schedule 40 steel pipe for construction