- Heavy Weight Drill Pipe
- 2016-11-02 20:49
- SFMC offers both integral and welding Heavy Weight Drill Pipe s.The integral HWDP is manufactured from one piece of AISI
- 2 1/2" square kelly
- 2016-11-01 22:18
- SFMC 2 1/2 SQUARE KELLYs are made from AISI 4145H modified alloy steel in accordance with API Spec. 7-1 latest edition,
- 9 3/4" API Drill Collar
- 2016-10-26 02:07
- As the company who manufacturesthe first drill collarin CHINA, SFMC has been manufacturing drill collars for more than 3