welded stainless steel pipe Material Grade: 304,304L,309,310S,316L,321,TP317,TP347 Out diameter: 19 ~ 914mm Stainless Steel PipeProduct Description:* Origin: Zhejiang ... , Jiangsu, Shandong of China (Mainland)* Mill: Qingshan, Baofeng, Taigang pipe* Certification: ISO* Material ...