Ipayipi le-PEX, noma ipayipi le-polyethylene elixhunywe, luhlobo lwepayipi oluguqula isakhiwo somolekyuli esilayini se-polyethylene sibe isakhiwo senethiwekhi esithathu-ngokwenyama noma ngezindlela zamakhemikhali, 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 nengcindezi; inqubo ye-silane ixuba i-silane ngesikhathi sokuphuma ukuze ikhiqize isakhiwo esinobukhulu obunemithombo emithathu; kanti inqubo yokukhanya isebenzisa ama-γ noma ama-β rays ukuze kwenziwe ukuxhumana komzimba. Izinhlobo ezahlukene ze-PEX pipes zihluke ekumelaneni nokushisa nasekuphukeni kokucindezela. Isibonelo, i-PEX-A ikakhulu yakhiwe ngesakhiwo senethiwekhi emibili, kanti i-PEX-B ne-PEX-C ziqinile kakhulu ekushiseni ngenxa yesakhiwo sazo esinobukhulu obunemithombo emithathu.

**Impahla eyinhloko yokwakha ipayipi le-PEX yi-polyethylene enedensity ephezulu (HDPE), enezinto ezingeziwe ezivula, izinto zokuxhumanisa, ama-catalysts, nezinye izinto ezengeziwe. Izinguquko zingangezwa futhi ukuze kuhlangatshezwane nezidingo ezikhethekile.** 1. Inqubo yayo yokukhiqiza ifaka phakathi ukulungiswa kwezinto zokwakha, ukuhlanganisa, ukujova kokushisa, ukwakhiwa kwepayipi, ukuxhumanisa, ukuhlola, kanye nokupakisha. Izithasiselo ezifana nezinto ezivimbela ukugqwala zingathuthukisa ukumelana nokugqwala kanye nezikhathi zokusebenza.

I-PEX pipes inezinhlelo eziningi zokusebenza, ikakhulukazi: ukuhlinzeka ngamanzi ngaphakathi, ukuhamba kwamanzi ashisayo namanzi ahlanzekile; izinhlelo ze-HVAC, ukushisa ngaphansi komhlaba nezishintshi zamanzi elanga; ukuhamba kwamanzi embonini yokudla; ukuxhumana nezintambo zikagesi; kanye neziteshi zokuhamba kwezinto ezibolayo.