Bit face shape selection:factory supply cheap price mining hard rock well drilling DTH hammer drill bit set
1. Drop Center Bit For high penetration rates in soft to medium hard and corrosive rock formations. Low to medium air pressures. Maximum hole deviation control.
2. Concave Face
The all-round application bit face specifically for medium hard and homo generous rock formations. Good hole deviation control and good flushing capacity.
3. Convex Face
For high penetration rates in soft to medium-hard with low to medium air pressures. It is the most resistance to steel wash, and may reduce the load and wear on the gauge buttons, but poor hole deviation control.
4. Double Gauge Face
This kind of face shape is suitable for fast penetration rates in medium to hard rock formations. Designed for high air pressures and good resistance to steel wash step gauge bit.
5. Flat Face Bit
This kind of face shape is suitable for hard to very hard and abrasive rock formations in applications with high air pressures. Good penetration rates an resistance to steel wash.

Service

A.Quick response in 24 hours when there are any further inquiries, complaints,testing feedback.later order confirmation etc.
B.Online Technical support covering dis-assembly, maintenance, operators training, is always available when customers meet the problems in different applications.
C. Quality warranty. Free replacement is offered as long as the hammer is damaged due to our quality problem which is confirmed by our engineer from customer's precise and on-time feedback.
D.Routine Visit. To get to know more of the precise needs and the applications of our distributors and large end customers and meantime to keep good relationship with them, our overseas sales managers work very hard to pay a visit to our customers at least one time per year
E.Tailored services like OEM,ODM, and special requests covering painting color, logo, packing etc., are also available.

About Us

Hunan New Diamond Construction Machinery Co.,Ltd is a professional and modern high-tech enterprise which engaged in researching and manufacturing rock drill and pneumatic tools. The team has specialized in drilling and pneumatic tools manufacturing since 1998, and until 2020 the company has nearly 700 employees and covers 110000m2 area in total. It mainly designs and manufactures DTH hammers, various drilling bits, drill pipes and all kinds o f other drilling tools. The products are widely applied to earth-moving engineering, mining exploitation, oil drilling, water well drill,pile foundation engineering and etc.

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