Features

Option half-automatic or manul mechanic bottom open system. Built-in ventilation pipe；

Cast pilot with rock drilling bits , arc guide plate teeth arrangement, double unlocking system;

Staggered arrangement of rock drilling bits;

Applicable layers: gravel , pebble , highly or medium weathered rock；

Customizable Items

Cutting DIA. Custom : design various cutting diameter based on demand, like φ950、φ1050 etc.

Shell HIT. Custom : design as demand, prolong or shortten, increase of efficiency by drilling more.

Key Component Reinforce Custom : strengthen the key component to extend life cycle;

Cutter Custom: single cutter and double cutter design as demand;

Bottom Custom :  single bottom and double bottom design as demand;

Kelly Box Custom : custom kelly box size based on the kelly bar, like 130*130, 150*150,200*200 etc;

Bottom Open Mechanic : half-automatic or manul mechanic bottom open system.