Production expertise

The manufacturing process is essential for a top-quality product. GRAF products have to fulfil a wide range of requirements. For this reason, GRAF is proficient in all established procedures for the manufacture of plastic products. The optimal manufacturing procedure for each product can therefore be accessed in-house. Our production facilities feature state-of-the-art equipment. This is the only way to guarantee superlative quality at attractive prices.

Continuous quality assurance

The image of our products is characterised by the very highest levels of manufacturing quality. The development of each tank is comprehensively documented. All production parameters, such as weight, date of manufacture and material batch, are stored as part of our quality assurance system. 

In addition, production at GRAF holds DIN ISO 9001 certification.

Download GRAF quality policy statement

Injection moulding expertise

GRAF broke into new ground by using injection compression moulding to make the Carat tank. To manufacture this tank, GRAF commissioned the development and construction of the world’s largest injection moulding machine.