Drill Collar

Products Range



AISI 4145HM、Non mag ( DNM110 )

Type of End Finish



 Drill Collar are mainly used for providing drilling pressue for drill bit. That will keep the drill pipe under the situation of being pulled. In that case, it will help rasing the drill bit straight and keeping the pathway of well in right direction.
The size of Drill Collars we can provide is from 2-7/8” to 11”;
we adopt the material of AISI 4145 HM;
the drill collars we provide include slick type and spiral type.

    Products Range 2-7/8"~11"
    Material AISI    4145    HM
    Type Slick、Spiral


Star Zirconia Ceramic Liners are available for all major mud pumps with various bore sizes.
Comparing to regular sleeved liners, our Zirconia liners offer:
Significant longer service.
Better performance.
Safer operation.
Life time cost saving.