9 5/8 Inch 13 3/8 Inch Casing & Tubing API 5CT N80 Smls Pipe for Oil & Gas Transmission Borehole Casing Pipe
ASTM 4140 JIS Sm440 DIN 42CrMo4 36 Ss400 Q235B Q345b S235jr S355 Paduan Karbon Padat Batang Bulat Baja Bulat