Helium accumulation tester:

A custom made leaktesting machine for quality checks on a large variation of gas valves.

Helium accumulation tester

Design charging hubs:

A drawing for stainless steel electric charging stations, in co-operation with our sister company Streetplug.

Ontwerp hubs

Robot arm:

A robot arm with gripper is used for assembling and testing products automatically.

Robot arm

Our production facility:

Verborg engineering has a spacious well-equipped factory to produce parts and assemble machinery.

Fabriekshal Verborg engineering

Ladders & Stepladder assembly lines.

Years of experience put in high throughput (semi-) automatic assembly lines.

Over the years Guillemin has realised multiple different assembly lines for ladders and stepladders. These lines include expanding and riveting of the steps on the frames. On this page the different kinds of assembly lines are shown.

Feel free to contact us if there are any questions about the showed assembly lines.


Semi-automatic line which fixates pre-assembled ladders by riveting and expanding the ladder-steps into the frames.


Automatic line for punching and assembling pre-sized ladder-steps in pre-sized vertical profiles with extra automation steps.


Automatic line for punching and assembling ladder-steps in pre-sized vertical profiles with extra automation steps.


Automatic manufacture of parallel and fixed-pitch ladders.


Fully automatic manufacturing of fixed pitch ladders.

Stepladder machine

This assembly line is used for manufacturing aluminum stepladders. This line uses a high performance assembly technique by BOLLHOFF, normally used in the automotive industry. By using this technique, a very resistant assembly is made, with higher quality then the general pop rivet assembly.

The steps and vertical profiles are loaded manually by the operator on a special mobile tool. This tool is able to move in the caged part of the line.

4 BOLLHOFF crimping units move over the assembly by a carriage system, performing the automatic pop riveting of the stepladder.

Machine with mobile jig

This semi-automatic assembly line is made to automate the riveting and expanding of flared or conical aluminum ladders. The ladders are pre-assembled by an operator on a jig, this jig is specifically made for the parts to fit in their right positions. Afterwards the coinical ladder is automatically assembled by a two-headed riveting and expanding. By using a servo motor the jig gets driven.

Afterwards the assembled ladder can be taken off the jig at the output-side of the line.

This line is made to be handled by one operator.