5" Dth Hammer Bits Dhd 350/Cop 54, Cop 52, Ql 50

XIAMEN QICHENG High and Low Air Pressure DTH Bits

5" DTH hammer bits DHD 350/COP 54, COP 52, QL 50, SD 5, Mission 50, XL 5;

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.

Features:

1.valveless air distribution. More reliable.
2.simple design of the piston, long life.
3.More efficient energy transfer, faster drilling speed, lower air consumption and lower oil consumption.
4.fewer internal parts, simple structure, longer life, less failure and easier to maintain becayse all the parts are heat treated.
5. It is easy to disassemble because the top sub, the drive chuck and the external cylinder are connected by multi-step thread.

Applications:

widely used for produce large-diameter holes in rocks for water-well.oill-field,coal-Mines, tunnels, quarrying and roads, power stations,and other construction projects.it is suitable for very hard and abrasive rock formation,medium-hard and homogeneous formation.soft rock and fissured rock formations etc.

Botton shape selection of cemented carbide:

Domed/Round Button: XIAMEN QICHENG SUPERHARD MATERIAL CO.,LTD.HERCULES ABRASIVES CUTTING TOOLS CO.,LTD.WWW.HERCULESABRASIVES.COM

It is mainly used for the side teeth of DTH Drill bit, which is suitable for rock with strong abrasiveness and very hard.

Parabolic/Semi-Ballistic Button:

It is mainly used for the side teeth and the middle teeth of the DTH Drill, which is suitable for medium and hard abrasiveness rock.

Ballistic Button:

It is mainly used in the middle teeth of DTH Drill, suitable for rock with moderate abrasiveness and medium hardness. When the rock is soft, the side teeth can also be made.

Sharp Buttons:

It is mainly used in the middle teeth of DTH Drill, and is suitable for soft rock with high penetration rate and low gear breaking rate.

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