1.API 5L/ASTM A106 GR B carbon Seamless Steel Pipes. 2.Standard: ASTMA511, A312, A269. 3.Length6m ... :6mm-830mm. API 5L/ASTM A106 GR B carbon Seamless Steel Pipes.Description of product:Various sizes are avaialble Outer ... , SCH40, STD, SCH80, SCHXS, SCH160, SCHXXS and more Length: 5.8, 6, 12m or customized Usage: petroleum, chemical, power, gas ... 280≥20/ API 5L/ASTM A106 GR B carbon Seamless Steel Pipes