Seamless Steel Pipe ASTM A53 106 Size 1/2"--24" THICK 2-20mm Steel pipes :Standard: ASME B36.10M---1996 , GB8163---1999 GB8162---1999 GB3087---1999 , JIS,DIN,ANSI, HGJ, SHJ, SY, DLMain products: ERWpipe ,spiral welded pipe and seamless pipeMaterial: carbon steel, alloy steel, Aluminum alloy and so on.WT: SCH20 SCH30 SCH 40 SCH80 SCH160We can also produce big tube for dia. 377-4,000mm / thickness: ...