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Tap Hole Drill Rod
It was widely used in big steel mill for delivering liquid steel specially from blast furnace. A blast furnace tap hole drill is provided having an elongated feedshell which supports a percussion drill
It was widely used in big steel mill for delivering liquid steel specially from blast furnace. A blast furnace tap hole drill is provided having an elongated feedshell which supports a percussion drill, drill rod assembly, and a centralizing drill rod support disposed between the percussion drill and a stationary forward end drill rod support.
| Mode | Sizes | Min.inner.Dia(mm) | Min.thickness(mm) | Weight(kg/m) |
| B19 | 19 +0.3/-0.1 | 5.5 | 5.5 | 2.26 |
| B22 | 22 +0.4/0 | 6.1 | 6.6 | 3.06 |
| B25 | 25 +0.6/0 | 6.8 | 7.6 | 3.96 |
| B28 | 28 +0.9/+0.2 | 8.3 | 8.5 | 5.1 |
| B32 | 32 +0.6/-0.3 | 8.8 | 9.5 | 6.48 |
| B35 | 35 +0.6/-0.5 | 9.5 | 10.5 | 8.18 |
| B38 | 39 +0.3/-0.6 | 13 | 10.5 | 9.92 |
| B45 | 46 +0.4/-0.1 | 14.5 | 13.25 | 13.05 |
| D32 | 32 +0.4/-0.3 | 8.8 | 10.0 | 5.83 |
| D38 | 39 +0.5/-0.9 | 13 | 10.5 | 8.34 |
| D45 | 46 +0.5/-0.9 | 14.5 | 13.25 | 11.75 |
| D51 | 52 +0.6/1.0 | 16 | 15.5 | 15.09 |
| Ø25 – Ø55 | 5.5 | 5.5 | depends |
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