Mechanical, hydraulic, pneumatic and electrical assembly in workshop.

The fitter-assemblers assemble the manufactured parts as well as the shop materials to finalize a turnkey set that can immediately be put to work.

They handle mechanical assemblies such as transmissions, undercarriage, stator-rotor, gears, shaft-sprocket adjustments, etc.

The hydraulic and pneumatic assembly involves the integration of preassembled groups at the supplier’s plant, the creation and testing of the rigid or flexible pipe network, the assembly and the connection of hydraulic or pneumatic components such as hydraulic jacks, distributors, etc.

We also carry out the electrical wiring, connected either to a terminal block or to a cabinet provided by the client.

The tests as well as the handover are carried out with the client in our workshops. A bench for engine testing is available for starting any engine up to 350 KW and programing specific test protocols.


Laser alignment control with automatic reports

Bench for engine testing up to 350 KW

Our assemblers at work

Discover our other areas of expertise


Sheet metal, tube and
1 to 500 mm thick profile work
More info


Turning, milling and reaming from the smallest
to the largest dimensions
More info

Qualified welding

Quality welds, mastered
and controlled
More info

Mechanical welding

Welded and machined sets
up to 6500 mm long and 12.6 t!
More info

Surface treatments

Liquid painting, scouring-passivation
and browning
More info

Dimensional control

3D control with Faro type arm
More info

Technical support

Mechanical engineers at your disposal!
More info

Looking for a highly qualified manufacturer?

Graux provides expertise in the manufacturing of subsets and sets of special machines.

Contact us



Zone industrielle, 3
Belgique – Europe

VAT (BE)-(0)421.983.751
RPM Charleroi
+ 32 (0)60 51 25 85

+ 32 (0)60 51 25 90

Opening hours

Monday to Thursday: 7H30-12H00
and 12H30-16H30
Friday: 7H30-12H30