... 48mm Length:5.8-15m Material:Q195-Q345,X42-X70,10#-45#, etc api spec 5ct oil casing ... : GB, ASTM, API2. Material: Q195, Q235, Q345, X42, X46, X52, X56, X60, X65, X70, 10#, 20#, 45#, etc3. Certificate: API 5L, ISO 90014. ... GB/T3091-2001,EN39,BS1139MaterialsQ195, Q215, Q235, Q345, X42, X46, X52, X56, X60, X65, X70, 10#, 20#, 45#, etcProduct CategoryMetallurgy,Mineral &EnergyTechniqueWeldedPacking1.Big ...