... ANSI,DIN,JIS,EN,GB 5.Stainless sprial welded steel pipe TypeStainless sprial welded steel pipeSizeSeamless Pipe: 1/2”~48”, ... 7.9,150M19,En46..Length6-12mIndustrial processhot rolled,hot expanded,cold drawn,and hot galvanizedSurface treatmentTransparent oil, rust-proof black oil ... SW,TH flanges,pipe end cap,eccentric/concentric reducers ;sprial welded steel pipe (SSAW),seamless steel pipe (SMLS) ,and ...