Drill Collar

 

our factory have API Certificater, we can supply all Drill Collars in API Standard

 

1)  AISI 4145H Drill Collars

 

    Modified Alloy Steel, forged, heat treated to API requirement, round tubes with lower sulfur and

    phosphorous content to meet sour gas application, and 'once thru' bored ID.

 

    Sizes : 

    (1) OD of 4" to 8" x 31 feet length, ID 2" to 3"

    (2) OD 9" and above x 31 feet length, ID 2 13/16" to 3"

   

 

2)  AISI 4145H Solid Round Bars

 

     Modified Alloy Steel, forged, heat treated to API requirement, solid round bars with lower

     sulfur and phosphorous content to meet sour gas application.

 

     Sizes :  Diameter of 3" to 10" x 6 to 18 feet length.

    

 

3)  AISI 4140/4145H Stabilizers Forgings