API Spec Non magnetic Drill Collar

Drill Collar is mainly used for providing drill bit with required drilling pressure, ensuring pull force transmitted to drill pipe and centralize the drill bit. According to API Spec7-1 Specifications, the material quality is 4145H that’s after heat treatment, thread hardening treatment and phosphating to better antiseize. It also can be produced upon customers’ requirements.

Drilling Collar

 SHIJIAZHUANG LONGXUAN TRADING CO., LTD is located in Shijiazhuang-- the capital of Hebei Province with convenient transportation.The company was established in Feb.2012.It is

 professional in supplying industrial equipment covering pipe processing machinery, automatic welding equipment,cutting machine and etc.The company always adhere

 to "credibility and integrity,efficiency"purpose and develop rapidly,creating excellent results,has fostereda good image in suppliers and foreign customers.And the company has established long friendly cooperation relationships with many high-tech machinery manufactruing enterprises.

    The company will continue to provide our clients with professional quality integrated solution in automatic welding,cutting and robot welding.