Shanxi Golden Diamond Petroleum Drill Tools Co., Ltd

Our products are API certified , Our leading products are drill collars HWDP, kelly, casing, drill pipes, , all kind of drilling tool joints, lifti

Pipe joints and tube body strictly according to the selection criteria for welding zone work procedure complete on C-132-J Friction welding mac

The HWDP's uses AISI 4145H alloy structural steel, the technique of production exactly carries on the SY/T5146-1997 standard, HWDP is o

Our company may act according to the user the request to produce Kelly and hexagonal Kelly, the length usually is 12.19 meters, uses AISI 414

The drill collar is according to SY/T5144-1997 and API 7-1 " Specification for Rotary Drill Stem Elements" standard, the material uses

The spiral drill collar is one of our product families. Three RH spiral grooves is made in outside surface of drill collar in order to reduce the co

Non-magnetic collar is a kind of low carbon chromium manganese steel, it is through the strict chemical composition proportion by forging and after re

Lifting sub after high strength alloy structural steel heat treatment makes, its mechanical property achieves the drill collars mechanical property re

A, B, C type of crossover subs is with the high strength alloy structural steel, makes after the heat treatment. Its structure pattern adapts with con