Maintenance of cylinders


A process for removing the previous coat of paint from cylinders before a new coat is applied. This process is carried out using cylinder sanding equipment with a steel wire brush. The sanding process is essential to ensure that the paint adheres properly and to achieve the perfect finish.


Cylinder painting service to adapt them according to regulations for the road transport of hazardous goods. The paint on cylinders may be: cylinders for pure gas (blue with a green shoulder), flammable gas (blue with a red shoulder), recovery (grey with a yellow shoulder) and transfer (yellow).

Hydraulic testing and restamping

In accordance with current regulations (RD 2060/2008 and current ADR), regular hydraulic testing should be carried out on all cylinders to ensure that they maintain the integrity and resistance of their pressure stamp. Once the test has been completed and the cylinder’s resistance has been checked, it can then be restamped with the date.

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Destruction of cylinders

Cylinders are not suitable for reuse and must be sent for destruction (with a destruction certificate) if they don’t pass the hydraulic testing, if they are more than 30 years old, or if they have significant exterior defects, such as dents, scratches that deform the metal, damage caused by mishandling (e.g. welding marks), deformation due to overfilling, rust, etc.

Valve change

If cylinders have a valve that is defective or too old, said valve will need to be replaced, according to the properties of the gas and the corresponding cylinder. The valve will also need to be replaced if the type of gas contained in the cylinder is changed.

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Interior cleaning

Cylinders that are used for transporting gas that come from a system (gas to be destroyed or regenerated) usually contain compressor oil, so it is therefore essential to clean the interior and remove the oil with a vacuum cleaner.