... , SCH40S, STD, SCH40, SCH60, SCH80S, XS, SCH80 etc.StandardAPI 5L, API 5CT, ASTM A53, ASTM A252, ASTM A500, ASTM A795, BS1387 ... as customers’ special requirementsPayment termsT/T and/or L/CApplicationline pipe for use in pipeline transportation systems in the petroleum and ... end steel tubessuitable for welding or for screwsing to BS21 pipe threads, loose steel tubes, scaffolds,used for the conveyance ...