DTH Hole Opener，Reaming Bit
Prodrill are professional designer and manufacturer for the following products: The most advanced high air pressure DTH hammer in China, various kinds of DTH bits, eccentric drilling equipment, symmetric drilling equipment, casing System, various kinds of threaded drilling bits, reverse circulation hammers and bits, shank adapters and coupling sleeves, new-style wells geothermal drilling rig, open-air blasthole drilling rig, all kinds of tool joints and drill pipes and spare parts for drill rig.
| Remark | Qty.× Button Dia.(mm) | |||||
| Shank | GuideDia. (1) | Reamed Dia. | Weight | |||
| (mm) | (mm) | (kg) | ||||
| Outer | Front | |||||
| For 3.5″ hammer | DHD3.5 | 95 | 130 | 6×14+ | 4×11+3×11 | 8.5 |
| 2×14 | ||||||
| DHD3.5 | 80 | 165 | 8×14 | 8×13+6×11 | 15.1 | |
| 100 | 165 | 8×14 | 4×13+4×12+3×12 | 14.5 | ||
| DHD3.5 | 110 | 165 | 8×14 | 4×13 | 15.2 | |
| 100 | 165 | 8×14 | 4×13+4×12+3×12 | 14.5 | ||
| 115 | 171.5 | 9×16 | 6×14 | 16.1 | ||
| For 5″ hammer | DHD350R | 75 | 152 | 8×18 | 6×14+2×14+2×14 | 35.2 |
| For 6″ hammer | DHD360 | 165 | 191 | 10×16 | 3×14+4×14 | 74.5 |
| DHD360 | 108 | 220 | 10×18 | 12×18+2×14+2×14 | 79.3 | |
| DHD360 | 165 | 254 | 12×18 | 12×16+4×14+5×14 | 65.3 | |
| For 8″ hammer | DHD380 | 140 | 200 | 10×18 | 8×12+2×14+4×14 | 10.6 |
| DHD380 | 188 | 254 | 22×18 | 2×18 | 147.4 | |
| DHD380 | 152 | 305 | 14×18 | 10×18+16×16 | 107.8 | |
| DHD380 | 210 | 381 | 16×18 | 28×18 | 120.5 | |
| For 12″ hammer | DHD112 | 216 | 312 | 18×18 | 15×18+6×16+6×14 | 133.6 |
| DHD112 | 254 | 375 | 18×18 | 12×18+15×18 | 136.2 | |
| DHD112 | 311 | 444.5 | 18×19 | 15×19+21×19 | 328.5 | |