The Downhole Air Pressure DTH Hammer, also known as Downhole High Air Pressure DTH Hammer NQL40/QL50/QL60/QL80, is engineered to excel in various drilling applications such as DTH drilling, borehole drilling, and water well drilling. This hammer is manufactured by Hunan New Diamond Construction Machinery Co. Ltd, ensuring high quality and reliability.

The NQL series features advanced engineering that delivers efficient performance. The design minimizes issues related to foot valves, such as fractures and expansions, and ensures lower air consumption. Users will experience a 15-30% increase in drilling efficiency compared to traditional bits with foot valves. The hammer's simpler structure, with fewer spare parts, contributes to lower maintenance costs and easier upkeep.

Why this product is a good choice - 

1. Avoid the problem happens on foot valve. Fracture,expansion and contraction
2. Lower air consumption and higher impact frequency. 15-30% higher drilling efficiency than the bit with foot valve.
3. Simpler structure and less spare parts, makes easier and cheaper maintenance.
4. Heat-hardened spare parts, makes longer serving life and less problem.
5. Thread connection for top sub and drive chuck, makes easier disassembly

Constructed from heat-hardened carbon steel, the NQL40/QL50/QL60/QL80 offers extended service life and reduced operational problems. The thread connection for the top sub and drive chuck facilitates easier disassembly, further simplifying maintenance and repairs.