Best Selling Sp780 7 Inch High Pressure DTH Hammer Drilling Well Drilling Tools Manufacturer

• After-sales Service: Provided
• Warranty: One Year
• Certification: ISO 9001:2000
• Standard: API
• Manufacturing Process: Forging
• Material: Carbon Steel
• Model NO.: SP780
• Transport Package: Carton
• Specification: 120*17*17cm
• Trademark: D Miningwell
• Origin: Zhejiang, China
• Production Capacity: 5000PCS Per Month

Product Description

D Mingwell high air pressure DTH hammer without foot-valve

It has following advantages:

1. Bit without foot valve will avoid the problem of foot valve broken or thermal expansion.
2.Lower energy consumption and higher impact frequency. The drilling speed is 15%-30% higher than the one with foot valve.
3. Less parts, simplified, and with parts proper heating treated.
4. Extend the life of using and easier to repairing.


D Miningwell was founded in Quzhou city, China in 2001. For more than 20 years production and operation process. D Miningwell has been on the leading edge of mining equipment.

We has its own drilling rig, DTH hammer, and drill pipe production workshops. provides a wide range of quality tools to mining, tunnelling, quarrying, water-well projects and urban transportation construction.

D Miningwell is committed to providing customers with the most efficient and cost-effective drilling solution. Our team of drilling specialists are standing by to assist.

Length(Less bit)	1195m
Weight	140KG
Bit Shank	SP780
Outer Diameter	¢165mm
Connection Thread	API2 3/8"REG
Hole Range	¢178-¢216mm
Air Consumption 1.0Mpa	21m³/min
Air Consumption 1.8Mpa	28m³/min
Working Pressure	1.5-2.8 Mpa
Recommended Rotation Speed	30-60 r/min

 

 

Welding Joints
We can produce drill pipes with different Welding Joints: Single Flat Wrench; Double flat wrench; Ingersoll Rand Type...


We has its own drilling rig, DTH hammer, and drill pipe production workshops. provides a wide range of quality tools to mining, tunnelling, quarrying, water-well projects and urban transportation construction.