Casings of metal for drilling, in particular for deep drilling; risers of metal; conveyor pipes of metal

Couplings for machines, namely, coupling parts and screw fittings for connecting of drill pipes to deep drilling machines; drill pipes being structural parts of deep drilling machines

Risers, not of metal; production pipes, not of metal, namely, non-metal pipes for gas and oil production; casings for drilling, in particular deep drilling, not of metal

Rental of oil well drilling tools, namely, drill pipes/casing pipes and related oil well drilling tool accessories