... , Shandong of China (Mainland)* Mill: Qingshan, Baofeng, Taigang pipe* Certification: ISO* Material Grade: 304,304L,309,310S,316L, ... steel pipe strength, high antioxidant properties and have a good organization Stability,2) Structure seamless stainless steel: the main structure ... and the chemical industry, machinery used in the structure of the resistance of the atmosphere, acid corrosion and ...