Solitary ring system for down the hole hammer
DTH SR products are economical and cost-effective to use when the ground is homogenous with few small boulders. With the same pilot you can install piles and interlocked Pipe-Pile-Wall piles just by using ring bits with different outside diameters. Robit® Solitary Ring Casing Systems are available for all the common Down The Hole hammers and can be used for all applications where the casing is left in the ground.
| Casing OD (mm) | 1320,0 |
| Casing OD (in.) | 52 |
| Casing Max Wall (mm) | 25,4 |
| Casing Max Wall (in.) | 1.000 |
| Ring bit ID (mm) | 1185,0 |
| Ring bit ID (in.) | 46.654 |
| Ring bit OD (mm) | 1339,0 |
| Ring bit OD (in.) | 52.717 |
| Pilot bit OD (mm) | 1256,0 |
| Pilot bit OD (in.) | 49.449 |
| Hammer | 33" |
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