Changsha Chaojingang machinery manufacturing CO., Ltd
Super Diamond, The more use, the more efficient!
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DTH Drill Bits 4 1/2”(115mm) For Down The Hole Hammer DHD340, Flat face, Guage8*14mm, center8*13mm
Description
1. Rapid drilling speed, bit body wearless;
2. Advanced heat treatment process, ensure the drilling life longer than similar products in the market.
3. DHD, MISSION, SD, QL, NUMA,different series of products, it can meet needs of different working conditions.
Applications
Widely used in mines, quarries, earthworks and other engineering drilling blasting hole, guardrail hole,mountain reinforcement, anchorage and other engineering holes, geothermal exploration hole, Well bore and other fields.
Specification
| Bit Dia.(mm) | Qty.× Button Dia.(mm) | Qty.Flushing holes | Weight (kg) | ||
| mm | inch | Outer | Front | ||
| 115 | 4 1/2'' | 8×Φ14 | 8×Φ13 | 2×Φ18 | 8.2 |
Face shape Features
Concave Face
1. Capable of drilling straighter holes in medium to hard rock which is broken or less consolidated
2. Offers high penetration rate in the above stated rock conditions
3. Has excellent air flushing characteristics
4. Predominant face style for majority of drilling conditions
Flat Face
1. Have a superior performance in hard, abrasive and broken rock conditions
2. They however have a slower penetration rate in comparison to a concave face bit
Convex Face
1. This face has been designed to offer high penetration rate in soft rock such as shale, limestone etc
2. They are recognized for having excellent capability for drilling into moderately consolidated rock conditions
Quality warranty:
Our products are made of high quality steel and all spares parts are inspected strictly before shipping. We have quickly responses for your complaint and suggestion.
Package:
Using ply-wooden cases and pallet for package to protect the products and avoid the damagement during transportation. Also we can customize package according to your special requests.
Production time:
Generally need 15-25 days
Transportation:
By air, By Express or By sea according to your requests.
The appearance of the picture is different from that of the actual product, and the actual product is the standard.