estension rods

DVY International is a specialist supplier of all kinds of rock drilling tools for mining, quarry, oilfield and construction industries based in China. The products are including:

1) Rock Drilling Tools and Accessories including chisel bits, cross bits, button bits, retrac bits coupling sleeves, tapered drill rods, integral drill rods, shank adaptors, dth hammer & bits, drag bits, hand held or air leg rock drills, etc.;

2) Demolition tools including pneumatic breaker steel rods, pneumatic breakers, hydraulic breakers, hydraulic breaker chisels;

3) Diamond Tools including segments, blades, grinding wheels, coring bits, wire saw and beads;

4) Tri-cone Rock Bits and PDC Bits;

5) Equipment For Oil well;

6) Crushing Machinery