Red flat ballitic 3 inch DTH drilling tools of BR SERIES BITS
Trading & supplier of china products High Air Pressure Dth Bits
We accept OEM manufacturing and produce on your design.
first class special alloy steel with high strength, heat resistance
The best tungsten carbides from China are commonly applied.
Tungsten carbide from European is also available.
2.12 years experience
3.Can match to the original bit shank