SA-320/SA-320M
SA-320/SA-320M (Specification for Alloy Steel and Stainless steel Bolting for Low-Temperature Service)· ASME (米国) · 36 材料
SA-320/SA-320M (Specification for Alloy Steel and Stainless steel Bolting for Low-Temperature Service)· ASME (米国) · 36 材料