What is the difference between PEX-A, PEX-B and PEX-C?

The cross-linking method is the difference between PEX-A, PEX-B and PEX-C. Cross-linking is defined as polyethylene material that has undergone a change in molecular structure using a chemical or a physical process whereby the polymer chains are chemically linked.

The methods for cross-linking are:

PEX-A: Peroxide – This method employs organic peroxides that, when heated, generate reactive free radicals that splice PEX chains together during extrusion

PEX-B: Silane This method involves grafting a reactive silane molecule to the backbone of the polyethylene

PEX-C: Electron beam This method involves subjecting the extruded PE pipe to a dose of high-energy electrons

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