SPM S80 203mm 8.5 inch 8 1/2 inch China wholesale coal mine drill bit / DHD 380 dth bit hammer bit / drill bit for water well
SPM 8 inch High Pressure DTH Air Drill Hammer bit S80 is very popular in international well drilling field.
It is widely used in international well drilling field. Drill-the-hold hammer.
SPM 8" DTH Drill Hammer S80 drill holes from 203mm to 350mm.
Matched drilling bits:S80-203,S80-216,S80-219.S80-235.S80-254......
We also supply other 3",4",5",6",10",12" High Pressure DTH Air Drill Hammers and various matched drill bits,
We offer SPM high air pressure DTH hammer size from 3" to 12"(Φ71mm-Φ275mm), SPM DTH hammers perform good in drilling well of diameter from 85mm to 600mm, especially excellent in deep hole well drilling works.
Different designing makes SPM DTH drill hammers are suitable for various well drilling conditions.