Ipayipi le-PEX, noma ipayipi le-polyethylene elixhunywe, luhlobo lwepayipi oluguqula isakhiwo se-molecular esilayini se-polyethylene sibe isakhiwo senethiwekhi esinobukhulu obubili ngokusebenzisa izindlela zomzimba noma zezemvelo, ngaleyo ndlela kuthuthukiswe ukumelana nokushisa, ukumelana nokukhululeka, kanye namandla omshini.

**Izindlela eziyinhloko zokukhiqiza ipayipi le-PEX zifaka phakathi inqubo ye-Engel (inqubo ye-peroxide), inqubo ye-silane, kanye nenqubo yokukhanya, ehambelana nezinhlobo ze-PEX-A, PEX-B, kanye ne-PEX-C, ngokulandelana.**

Inqubo ye-Engel yakha izixhumi zamakhemikhali ngokusebenzisa izinga lokushisa eliphezulu kanye nengcindezi; inqubo ye-silane ixuba i-silane ngesikhathi sokuphuma ukuze ikhiqize isakhiwo esinobukhulu obunemibono emithathu; futhi inqubo yokukhanya isebenzisa ama-ray γ noma β ukuze kube nokuxhumana komzimba. Izinhlobo ezahlukene zamapayipi e-PEX zihluke ekumelaneni nokushisa kanye nokumelana nokuphuka kokucindezela. Isibonelo, i-PEX-A ikakhulu yakhiwe ngesakhiwo senethiwekhi esinobukhulu obubili, kanti i-PEX-B ne-PEX-C zihlala ziqinile ekushiseni ngenxa yesakhiwo sazo esinobukhulu obunemibono emithathu.

**Imathiriyeli eyinhloko ye-PEX pipe i-polyethylene enedensity ephezulu (HDPE), enezinto ezingeziwe, abaqalayo, abaxhunyayo, abakhiqizi, nezinye izinto ezingeziwe. Izinguquko zingangezwa futhi ukuze kuhlangatshezwane nezidingo ezikhethekile.** 1. Inqubo yayo yokukhiqiza ifaka phakathi ukulungiswa kwemathiriyeli eluhlaza, ukuhlanganisa, ukugxila kokushisa, ukwakha ipayipi, ukuxhunywa, ukuhlola, nokupakisha. Izithasiselo ezifana nezithasiselo zokuvikela zingathuthukisa ukumelana nokugqwala kanye nezikhathi zokusebenza.

Amapayipi e-PEX anohlu olubanzi lwezicelo, ikakhulukazi kufaka phakathi: ukuhlinzeka ngamanzi ngaphakathi, ukuhamba kwamanzi ashisayo namanzi ahlanzekile; izinhlelo ze-HVAC, ukushisa ngaphansi komhlaba kanye nezishintshi zamanzi elanga; ukuhamba kwe-liquid embonini yokudla; ukuxhumana kanye namapayipi kagesi; kanye namapayipi ezinto zamakhemikhali ezonakalisayo.