Size Range: 3 to 40 inch

Shanks: DHD,MISSION,SD,QL,CIR

Type:With or without foot valve

>> Application

DTH (Down The Hole) drill bit, also called spline connected drill bit, is mainly used in large scale mine (open and underground), open quarry and construction. The hammer is situated down the hole in direct connected with the drill bit with splines in the bit. The hammer piston strikes the drill bit resulting in an efficient transmission of the impact energy and insignificant power losses with the hole depth.

Size Range: 2 to 24 inch

Shanks: DHD,MISSION,SD,QL,CIR

>> Application

DTH drilling is a percussion system driving a piston inside hammer body with up and down motion by compressed air and transmitting an intensive percussion energy to the bit to enable the drilling by crushing the rock. Drilling method by DTH hammer exerts high drilling performance especially for drilling hard rock and contributes for shortening work schedule. Hence, this method is widely utilized for foundation work, landslide prevention work, quarrying services, marine civil work, etc.

Model:Eccentric Casing System

Casing Tube:108,114,127,146,168,178

                      ,183,194,219,245,273,325,377

>> Application

The eccentric reamer drill is an overburden drilling system designed for conditions where a cased hole is required. Collapsing holes tend to make overburden drilling expensive, with lost drilling equipment and down time.

Model:Concentric Casing System

Casing Tube:146,168,178,183,194,219

                      ,245,273,325,377

>> Application

Concentric Drilling Tools is suitable for drilling water wells , geothermal wells , short miscopies ,medium mini-type grouting hole of building , dam and harbor project .