... API5L etc.2) Sizes:a)OD:325mm-1220mm b)Wall Thickness:8mm-80mm c)Length:6m-12.5m3 ... X42-X70,API5L GrB,etc.4) Application:Structural pipe,liquid transportation,conveyance of oil and gas,petroleum transportation ... API5L etc.2) Sizes:a)OD:325mm-1220mm b)Wall Thickness:8mm-80mm c)Length:6m-12.5m3 ... X42-X70,API5L GrB,etc.4) Application:Structural pipe,liquid transportation,conveyance of oil and gas,petroleum ...