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Drill Collar

KOSUN Drill Collar is manufactured from AISI 4145H alloy steel. Drill collars are bored and drifted to API Spec 7-1 and fully heated to meet or exceed the mechanical property requirements of API Spec 7-1. Hardness range of 285-341HB and a charpy "V" notch impact value of 54 joules are guaranteed one inch below the surface.

Drill Collar for Sale by Kosun

For enquiries and orders, please specify:

Slick or Spiral;

Drill Collar OD;

Drill Collar ID;

Length of Drill Collar;   

Connection Type.

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KOSUN Equipment