... #, 45#, 16Mn, Q235, Q345, Q1952) Standards: ASTM A53, ASTM A106, API 5L, APL 5CT, ASTM A519, and ASTM A213/A213M3) Certification: ISO9001 ... ) Suitable for high pressure, anti-corrosion and long distance conveyance of gas/fluid8)Application: Petroleum,chemical,power,gas,water,metallurgy,shipbuilding ...