... : Q195, Q235, Q345, X42, X46, X52, X56, X60, X65, X70, 10#, 20#, 45#, etc3. Certificate: API 5L, ISO 90014. outside diameter: 10 ... ,GB/T3091-2001,EN39,BS1139MaterialsQ195, Q215, Q235, Q345, X42, X46, X52, X56, X60, X65, X70, 10#, 20#, 45#, etcProduct CategoryMetallurgy, ... company specializes in producing and managing different kinds of steel pipes as well as wide range of steels, such as: galvanized ...