Changsha Tianhe Drilling Tools and Machinery Co.,Ltd.
To survive with high quality,to develop with non-stop innovation,to repute with thoughtful service,to brand with great sincerity
Add to Cart
Material raw:
Steel:
first class special alloy steel with high strength, heat resistance and wearable
Carbide
The best tungsten carbides from China are commonly applied.
Tungsten carbide from European is also available.
High Pressure RC Drilling bit Bit for down-the-hole drilling, air reverse circulation drilling in mining exploration, civil engineering, water well drilling, geothermal well drilling, reverse circulation drilling.
Dia. 85mm, 90mm, 95mm, 102mm, 105mm, 115mm, 133mm, 140mm, 152mm, 165mm,
178mm, 190mm, 203mm, 216mm, 229mm, 241mm, 254mm, 279mm, 305mm, 330mm, 356mm, 381mm, 445mm, 555mm, etc
| Shank model | Face | Rec. hole size mm(inch) | Spline number | L (mm) | Φ1 (mm) | B1 (mm) | B2 (mm) | Φd1 (mm) | Φd2 (mm) | Gauge buttons | Front buttons | Flushing hole |
| TRC8 | Drop center | 203(8) | 10 | 335 | 136 | 16 | 16 | 134 | 120 | Φ18*10 | Φ18*8+ Φ16*6 | 2 |
| Drop center | 210(8 1/4) | 10 | 335 | 136 | 16 | 16 | 134 | 120 | Φ18*10 | Φ18*8+ Φ16*6 | 2 | |
| Drop center | 216(8 1/2) | 10 | 335 | 136 | 16 | 16 | 134 | 120 | Φ19*10 | Φ18*8+ Φ16*8 | 2 |