DRILL TOOL
Button Bit
Drill Rod
Shank Adapter
Coupling Sleeve
Blade Bit
Coal Mining Drill Bit
Reaming Tool
Retrac Button Bit
Rotary Drill Bit
Cemented Carbide Grinding
Integral Steel Grinding
DTH TOOL
DTH Bit
DTH Hammer
DTH Pipe
Jumbo Cluster Hammer
Low Air Pressure DTH
Anchor Tools
Sub Adaptor
DTH Bit Profile
Special DTH Bit
RC Tools
Overburden System
ROCK DRILL
Pneumatic Rock Drill
Hydraulic Rock Drill
Excavator Mounted
Paving Breaker
Air Pick
STONE TOOL
Block Splitting
Block Pushing
Integral Steel Grinding
Polishing and Grinding
Abrasive Consumable
Diamond Blade and Drill

Double Casing

Application Range(DTH hammer type drilling inside the case) It can be widely used in drilling for grouting holes in projests such as cofferdam, foundation and geothermal well and etc.

Double Casing

Features:
1.Hardening treatment of the parts surface with longer operating life
and excellent anti-wear properties
2.Structure optimization Strengthen the structural
3.Superior performance Smooth with high efficiency


How to order?
Crown Ring Bits: Casing OD + Bit OD + Thread Size
形钻头:套管外径 + 钻头外径 + 螺纹连接
Inner Bits: Bit Diameter + Thread Size
中心钻头:钻头直径 + 螺纹连接
Tool Joints: Diameter + Length + Thread Size
过渡连接头:直径 + 长度 + 螺纹连接
Outer/Inner Tube: Diameter + Length + Wall Thickness + Thread Size
冠状环钻杆/套管:直径 + 长度 + 壁厚 + 螺纹连接