pexpipe

PEX was undertaken a number of attempts to reduce the cost of production pipe PEX, through the introduction of other methods of joining. Today, these techniques about fifteen. But in practice, for the production of pipes, besides those already mentioned method of Engel (PEX-a), was fixed yet only two ways: radiation, and silane.

When the radiation method, the PE pipe "bombard" the electrons with a laser. The energy produced by radiation triggers crosslinks. This method is applicable only for small-diameter tubes, since the thick-walled tube can not "flash" electrons. Radiation method to classify as PEX-a.

Silane crosslinking method is the cheapest and is based on the saturation of the macromolecules of PE silicon. The impact of water vapor in the presence of the catalyst activates the process crosslinks. Stitching is made under the so-called polysiloxane bridges (-Si-O-Si). This method is classified as PEX-b.

Practice has shown that none of the main methods of crosslinking polyethylene (PEX tubing), can not compete with the method of Engel as the final product.