GDS self developed, compact built high pressure water pumps, especially designed for water powered drilling. Avaliable with both electric and diesel engine

Everything from pumps, filters, hoses and systems for PH regulation. Please get in touch and we will help you with the water management in your project!

Rock bits, bits for water drilling, slantbits (for directional drilling), reamer bits and much more. Do you wish for a customized drill bit we are happy to help you as well.

We have most of what you might need hanging under your rotation whether it is drill pipes, adaptors, swivels or shock absorbers.

Our colloid mills with injection pump are mobile and easy to use. They are perfect for pile filling, anchor drilling and to many other things.

Enviromentally friendly and safe lubricating products from MATEX, biological hammer oil based on vegetable oil, non-alcohol based high effecient foam builder, thread grease and hole stabilizer.

GDS self developed concrete casting reel for simple, effecient and quality ensured casting of steel pipe piles.

Drilling system with reverse circulation is mainly used for drilling with rough piles and in case of difficult soil conditions. The R/C system provides a much better control of the return flow and reduces the need of air. Owing to the increased control of the flushing and return flow, R/C drilling is more benign to the surrounding areas and formation.

Jet grouting is an advanced method where cement slurry is, under high pressure, spouted out in the formation to build cement pillars or to seal a rammed sheet pile wall against rock.
A method for jet grouting that has been shown to work well in Scandinavian conditions, is to perform pre-drilling with a water powered hammer.
This method presupposes the use of dual wall piles and swivels with to media conductors, so called Duplex-system where one of the conductors is used for the …