- 6-5\/8\ drill pipe
- 2016-11-18 15:26
- heavy weight drill pipe(welding,5")
- 2016-11-02 10:02
- 1.Size:,3 1/2, 4,4 1/2, 5, 5 1/2,6 5/82.Products description:Our integral HWDP is made from one piece of AISI 4145H soli
- 2 7/8" Tool Joint
- 2016-10-22 13:53
- Cross-over sub acts for conversion and connection of drill stem component in petroleum ,natural gas and geology drilling