As always, the best ideas come from our customers.

For more than 70 years, GRP centuder tubes have always been glued together with the same system:

• Protective suit on
• Mask on
• Grinding the pipe and sleeve
• Standing in the dust
• Covering the whole hall in dust
• Stir in glue
• Applying glue
• Align the sleeve and pipe
• Let the adhesive harden

And again from the beginning. This has never been a pleasant job for the fitter or for his surroundings. From the point of view of the QS, there was no possibility to test an adhesive bond or its quality non-destructively. Neither the surface treatment nor the amount of glue in the compound were comprehensible. Occupational safety always made different demands on suctionors or personal protection equipment. Everyone always accepted this because it was so.

Last year, a customer reminded us that this approach does not make sense from a health and safety, QA, economic or technical point of view when you have slingshot pipes.

Since the slinging of the pipes allows precise outer diameter of the pipes, the adhesive gap between the pipe and the sleeve can be precisely defined.

When then a glue was found that connects to the surface of the pipe and sleeve, a grinding is no longer necessary. That’s why we’re going to:

• Weighing cartridge (if desired)
• O Cover rings with glue (sliding agent and cover)
• Align the sleeve and pipe
• Filling the adhesive gap with glue
• Let the adhesive harden
• Weighing cartridge (determine and log the amount of glue)