Core Barrel/ Nq Drill Rod/ Casing Pipe

We can provide:

1.Test Report & MTC

2.Ready stock for normal sizes

3.Customized sizes welcomed

4.One stop service

Q series rod parameter-geological steel pipe-entire length heat treatment

Spec. Unit BQ NQ HQ PQ

OD/ID mm 55.6/46 69.9/60.3 88.9/77.8 114.3/101.6

Tensile Strength mpa 805/800 1060/1060 1120/1120 1130/1140

Yield Strength mpa 690/675 985/990 1030/1040 1030/1040

Elongation A(%) 20/18 16/17 16/15 16/15

We specialized in manufacturing Drill Rods, Casings, Core barrels, Diamond bits, Reaming 

shells, Drill rigs, PDC bits and other drilling tools & equipment for geological exploration, 

mining, geotechnical, dam grouting, water well and horizontal directional drilling.

Quality guarantee is not only responsible for customers, but also the assurance of enterprise's

steady development. The necessary test equipment and the effective & perfect production

process control is the assurance of product quality. Taking the spirit of "To win the market

with innovation, to serve the customers with friendship, to build the brand with

quality, to develop the enterprise with sincerity", we utilize the advanced testing

methods to make each product meticulously.

Name: heat treatment

 Heat treatment will greatly improve the material strength and increase the thread wear life 

Accuracy of threads will determine the use effects and life time of drill rod and casings. 
CNC latches and form cutter are used in thread opening processing to minimize error