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Pit launch drilling has a range of useful applications, including installations for power, water, gas, and telecommunications. An HDD pit launch drill can be lowered into appropriately sized pits, provided that proper shoring equipment is used to stabilise the excavated working area.
While typically used for installing 4-inch pipes (100mm), pit launch drills are capable of handling larger diameter products, even when space is limited and a larger drill cannot be accommodated.
Similar to surface-mounted HDD rigs, pit launch drills utilise standard locator-transmitter beacons and horizontal directional drill heads. However, the pit launch drilling installation process can be slower due to the necessary preparation, including pit excavation.
The performance of pit launch drills is also limited to a maximum practical distance of around 200 feet (60 metres) due to shorter drill rod lengths — and slurry management requires a trash pump or vac system, as the pit drill operates from the same hole where the slurry returns.
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