Shirttail Enhancemented Blast Hole Drill Bits For Medium Hard Formations

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Medium to Medium-Hard Formation

Application: For use in moderately abrasive consolidated formations with compressive strength ranging between 140 – 485 Mpa such as hard limestone, quartzite, granodiorite, and medium grade metamorphic formations

Cutting structure: These bits are characterized by moderately spaced conical inserts with medium projection. This configuration promotes good penetration rates in medium hard and moderately abrasive formations. Smaller carbide inserts are provided on the gage and inner rows or hard metal is deposited in the nose area to contain shell erosion and improve performance.

• Compression Strength: 20,000 – 70,000 psi
• Drilling Speeds: 60 – 100 rpm
• Jet Circulation: All sizes
• Weight on Bit (WOB): 2,500 – 7,000 lbs/in of bit diameter

What is Blast Hole Drill Bits?

​In the mining industrial, blast hole drilling is very important to achieving the required product or outcome. Drilling suitable holes allowing explosive charges to be placed down the holes. And then to blast large areas making them more manageable and easier to remove.

Bits thread are manufactured according to API standards.

Advantage:

1. Rotary drill bits are manufactured using aircraft quality steel and premium carbide grades developed to suit the toughest application.
2. Computerized designs using solid modeling, computerized manufacturing processes using the latest in CNC equipment and computer process controlled heat treatment ensure consistent, high quality, drill bits.
3. A tailor made cutting structure provides our customer with the best combination of bit life and rate of penetration to yield the lowest cost per meter.
4. The gauge will have Carbide Gauge Inserts to prevent early erosion of the steel. In very harsh or abrasive conditions additional protection is offered by applying Hard Facing alloy material to reinforce critical wear areas of the bit.

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Come rain or shine, on work days or holidays, at home or abroad, our services are there when you need them. We believe you will be entirely satisfied with our working attitude and diligence.

Tianying promises that once you choose us, our company is there ready to respond with the first arrival solution any time, anywhere.

Don’t see the bit you are looking for? Give us a call, we can customize any bit to fit your unique circumstances.