... ),API 5L Gr.B,X42,X52,X60,st42,st37,st52,SS400,SS490 4. Mill: ( 2inch to10 inch) 5. Pakages: black painting,beveled end,pipe ... cap,marking,bundles,wowen bag. 6. Tolerance:According to the specification we adopt. 7 ... . Technique:Cold drawn for small size,hot rolled for size up 3inch 8. ...