Ipayipi le-PEX, noma ipayipi le-polyethylene elixhunywe, uhlobo lwepayipi oluguqula isakhiwo se-molecular esilayini se-polyethylene sibe isakhiwo senethiwekhi esithathu-dimensi ngokusebenzisa izindlela zomzimba noma ze-chemistry, 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 obunemithombo emithathu; kanti inqubo yokukhanya isebenzisa γ noma β ama-ray ukuze kuhlanganyelwe ngokomzimba. Izinhlobo ezihlukene ze-PEX pipes zihluke ekumelaneni nokushisa nasekuphukeni ngenxa kokucindezela. Isibonelo, i-PEX-A ikakhulu yakhiwe ngesisekelo senethiwekhi esinobukhulu obubili, kanti i-PEX-B ne-PEX-C zihlala ziqinile ekushiseni ngenxa yesakhiwo sazo esinobukhulu obunemithombo emithathu.

**Impahla eyinhloko yokwakha ipayipi le-PEX i-polyethylene enedensity ephezulu (HDPE), enezinto ezingeziwe ezivula, abaxhasi bokuxhumanisa, abakhiqizi, nezinye izinto ezingeziwe. Izinguquko zingangezwa futhi ukuze kuhlangatshezwane nezidingo ezikhethekile.** 1. Inqubo yayo yokukhiqiza ifaka phakathi ukulungiswa kwezinto zokwakha, ukuhlanganiswa, ukujova kwe-melt grafting, ukwakhiwa kwepayipi, ukuxhumanisa, ukuhlola, kanye nokupakisha. Izithasiselo ezifana nezinto ezivimbela ukugqwala zingathuthukisa ukumelana nokugqwala nokuphila kwesevisi.

I-PEX pipes inezinhlelo eziningi zokusebenza, ikakhulukazi: ukuhlinzeka ngamanzi ngaphakathi, ukuhamba kwamanzi ashisayo namanzi ahlanzekile; izinhlelo ze-HVAC, ukushisa phansi kanye nezishintshi zamanzi elanga; ukuhamba kwe-liquid embonini yokudla; ukuxhumana kanye nezintambo zikagesi; kanye neziteshi zokuhamba kwemidiya ye-khemikhali ecorrosive.