国产亚洲A∨片在线观看,在电影院嗯啊挺进去了啊视频,成人免费无码A毛片,色妞网欧美

Carbon steel seamless pipe series

Oil Casing

Product description
API SPEC5CT
| Oil Casing

Oil Casing is mainly used in fastening wall of oil well. High-anti crashed Casing, High-pressure-anti caustic Casing, Anti-low-temperature Casing meets various circumstance in the oil fields.

 

Main Products and Standa rds