DTH Bit, Dhd 3.5, Cop 34, Cop 32, Mission 30, Br 3, Ql3

XIAMEN QICHENG High and Low Air Pressure DTH Bits

After many years research, we have rich experience in development and manufacturing high quality products, which adopted high-quality raw materials, advanced technology and passed through strictly inspection.

3" DTH hammer bits (85mm - 105mm), shanks : DHD 3.5, COP 34, COP 32, Mission 30, BR 3, Mach 303;

4" DTH hammer bits (105mm- 130mm), shanks: DHD 340/COP 44, COP 42, QL 40, SD 4, Mission 40, XL 4, Mach 44;

5" DTH hammer bits (130mm- 152mm), shanks: DHD 350/COP 54, COP 52, QL 50, SD 5, Mission 50, XL 5;

6" DTH hammer bits (152mm- 171mm), shanks: DHD 360/ COP 64, COP 62, QL 60, SD 6, Mission 60, XL 6;

8" DTH hammer bits (200mm- 305mm), shanks: DHD380, QL 80, SD 8, Mission 80, COP 84.