Metal Drill Pipe, Heavyweight Duty Drill Pipe

Integral heavy weight drill pipe are made of AISI 4142H - 4145H alloy structural steel. Production complies with the provisions under the Standard SY/T 5146-1997. Connector screws comply with the provisions of the Standard API SPEC 7. Heavyweight drill pipe is a kind of drilling tool of medium weight which is similar to the drilling rod.