1.oem products
2.various size are available
3.Whole heat treatment

1.Whole heat treatment
2.Screw thread heat treatment.
3.Hard chromed on pin end

4.oem products
5.various size are available

Friction Welded drilling rods 73mm to 140mm API standard R780 / 42CrMo4 alloy steel, heat treated.

The wire-line drill pipe is used for core drilling rig, and it can work more effectively.

It is have into high-efficiency, to take core rate, life expectancy bit long, labor-intensive small advantages and so on. The more deepening of the depth it drilling, the more obvious advantages it showing.