1).Outer diameter: 20mm-1118mm 2).Wall thickness: 1.0-25.4mm. 3).Standard: GB/T3091-2001, BS1387-1985, ASTM A53, API 5L / API,BS,JIS 4).Material: Q195, Q215, Q235, Q345, STK500 5).Packing: In hexagon bundle with pvc plastic sheet and slings APPLICATIONS: transportation of hydrocarbons-both products and crude lines, high temperature and pressure application in refineries and petrochemical units, conductor casing for oil and gas exploration, pressure vessels, piling, construction and structures.