Standard: API Spec 7 drill collar

Material: AISI 4145H Alloy Steel or Non-magnetic material

Specification:

OD: 3 1/8" -11"

Length: 10' -31'

 

Type: Slick Drill Collars and Spiral Drill Collars

We assure you the non-magnetic drill collars we are supplying are the best in China.