... advance is confirmedMOQ10MTMaterialA53-B, A315-B, A106-B, A210-C, A333-1,6, 27SiMn, 42CrMo4, 41Cr4,x42, x52, x60, St42, St45, St52 ... 42CrMo)Markingnon-removal stencil marking with standard, specifcation and steel grade. schedule 40 steel pipe for construction