Standards: SY/T5037-2000, GB/T9711.1-1997, APISpec5L Outer diameter: 219 to 2,432mm WT: 5 to 32mm Applications: steel pipe for conveyance fluid Materials: Q235, Q345, 10#, 20#, 16mn, L245, L290, L360, X42-X70 Price terms: T/T or irrevocable L/C at sight Usage: widely uses in the electric power, the thermal energy, offshore oil piling, chemicals, water supply , transporting natural gas, petrol , piling, building bridge, steel structures, and other engineering fields