4 Inch QL40 High Air Pressure DTH Bit Without Foot Valve is designed to drill further and the drill bit bodies are made from precision hardened nickel molybdenum steel, with a compound curve shape for faster and smoother cutting and easier removal of cuttings. The following is the specification information of 4 Inch QL40 High Air Pressure DTH Bit Without Foot Valve:
| Diameter | Gauge Buttons | Front Buttons | Weight(KG) | Part Number |
| mm | Inch | Flat Face | Convex Face | Concave Face | Face Type |
| 115 | 4 1/2 | Φ14*7 | Φ14*2 | Φ14*4 | / | Convex Face | 9.6 | LR-QL40-115CV-1 |
| 115 | 4 1/2 | Φ16*7 | Φ14*2 | Φ14*4 | / | Convex Face | 9.6 | LR-QL40-115CV-2 |
| 115 | 4 1/2 | Φ14*8 | Φ14*2 | Φ14*4 | / | Convex Face | 9.6 | LR-QL40-115CV-3 |
| 125 | 4 15/16 | Φ14*8 | Φ13*3 | Φ14*4 | / | Convex Face | 10.2 | LR-QL40-125CV |
| 127 | 5 | Φ14*8 | Φ13*7 | / | / | Flat Face | 10.3 | LR-QL40127FF |
| 130 | 5 1/8 | Φ14*8 | Φ14*7 | / | / | Flat Face | 10.5 | LR-QL40-130FF |
Key Features and Benefits
lValveless and high frequency design ensure smooth operation in various applications.
lSuper strength carbide ensures high quality and performance of products.
lOptimized internal structure maximizes energy output as well as minimizing service requirements.
lAll critical internal components are heat-treated under strict control to make service life longer.
4 inch DTH bit is a widely used size for mining, quarrying, water well drilling and many other construction projects.
A comprehensive range of drilling tools means that you can find the most suitable products here, at LEANOMS.
