Epiroc have been continuously improving the casing advancement system. Today we have developed two new concepts for Symmetrix and Elemex. With "Generation 2" we found a way to allow both Symmetrix and Elemex pilot bits to use the same ring bit set and "Model C" allows both permanent and retrievable ring bit sets to use the same pilot bit. With this new concepts Epiroc will turn the product selection easier.
The new face design (patent pending) of the Symmetrix and Elemex pilot bits improves the flushing of the cuttings and makes the penetration rate even better than before, especially in clay and sand formations. When changing the pilot bits you only need one ring bit set for both pilot bits, and you will save time as well as money. This is an extra advantage when sensitive ground is encountered.