BONMACH-Tapered Rock Drill Rod Manufacturer
Tapered Drill Rods
Bonmach is one of the leader manufacturer of rock drill rods and other rock tools in China. Our tapered rock drill rod include normal drill rod and excellent rock extension rod to satisfy different requirement.
Bonmach’s tapered drill pipe use high quality raw Steel 55SiMnMo, 90CrMo etc. with Hardness 45 HRC to achieve excellent performance. It has great advantages on better wear-resistance, longer service life and never broken to raise effiency, keep security and decrease cost by reduce rod exchange time.