api spec 5ct oil casing and tubing OD:10.3-609.6mm WT:1.73-17.48mm Length:5.8-15m Material:Q195-Q345,X42-X70,10#-45#, etc api spec 5ct oil casing and tubingProfessional manufacture and seller of the erw steel pipe.Some detailed information:1. Standard: GB, ASTM, API2. Material: Q195, Q235, Q345, X42, X46, X52, X56, X60, X65, X70, 10#, 20#, 45#, etc3. Certificate: API 5L, ISO 90014. outside ...