Specifications

geological core drill pipe/rock drill rod 
1.NQ HQ AW PW drill rod 
2.High quality,best price 
3.High efficiency,long use life 

  geological core drill pipe/NQ PQ NQ rock drill rod :

In order to meet different drilling applications in mining, quarrying as well as energy exploration, we usually need different lengths of drill stems, so coupling sleeves are needed to connect extension rods. There are two types of couplings: semi-bridge couplings and full bridge couplings. The only difference between them is that the former have a middle stop at the middle of couplings. Generally, two ends of couplings are the same, like R25, R32, R38, T45, T51, etc. But sometimes, crossover couplings are needed, for example, one end is R32 and the other end is R38, but basically all couplings are female threads.

Made-to-order products can be supplied according to your detailed requirements. 
1, light weight (lighter than the old-fashioned drill pipe 45%) 
2, footage soon, dust small vertical holes left after drilling cuttings, into a hole clear. 
3, card beans quickly and easily connect and save banding material. 
4, under separation of body and drilling may be the end, the use of life extended. 
5, water-based wet good pass operation.

The material of this product is the 55sinomo hollow hexagon bar iron. The specification: 0.5, 0.8 meter, 1 meter to 6 meter etc., each kind of specification is complete.

We can manufacture all kinds of bits and shells according to customer's special requirement. 

Any requirement please contact us, we'll do the best service for you. Hope we can establish a good business relationship.