Blast Hole Drilling 60mm 70mm 89mm DTH Drill Pipe

DTH Drill Pipe Feature

1. Through-hardened shank end for high wear resistance and a longer service life
2. Stainless steel flusing tube lining to prevent corrosion and breakage
3. Super tough 40SiMnCrNiMo steel, specially designed for wet or dry drilling.
4. Special anti-corrosion oil to protect the flushing hole of the rod.
5. High quality insert subjected to special bronze- brazing process.

DTH Drill Pipe Application:

DTH Drill Pipe are used in granite and marble quarry, gold mine, railway, tunnel, etc. for drilling

hollow drill steel

The hollow drill steel is vital material for making drill rods. It is typically supplied as steel hollow bars that made from premium grade steel and through closely-controlled metallurgical process. The result is quality hex hollow drill steel with increased hardenability, uniform grain structure, and excellent machinability, which is difficult to break.

Drill rods made of Roschen hollow steel bars deliver stable drilling performance and extended wear life.

Materials: 55SiMnMo, 40SiMnCrNiMoA, 23CrNi3Mo, 80Cr, 95CrMo, 60Si2MnA

DTH Drill Pipe Specifications: 

DTH Drill Pipe Pictures