Ipayipi le-polypropylene (MPP) eliguquliwe elingaguquki lezintambo zamandla liwuhlobo olusha lwepayipi lepulasitiki elenziwe nge-polypropylene eguquliwe njengento eluhlaza eyinhloko, kusetshenziswa ifomula ekhethekile nokucubungula ubuchwepheshe. Inamandla aphezulu, ukuzinza okuhle, nokubeka ikhebula kalula. Ukwakhiwa okulula, ukonga izindleko kanye nochungechunge lwezinzuzo. Njengokwakhiwa kwe-pipe jacking, kugqamisa ubuntu bomkhiqizo. Ihlangabezana nezidingo zokuthuthukiswa kwamadolobha anamuhla futhi ifanele ukungcwatshwa ebangeni le-2-18M. Ukwakhiwa komgodla wekhebula lamandla we-MPP oguquliwe kusetshenziswa ubuchwepheshe obungenazintambo akuqinisekisi kuphela ukuthembeka kwenethiwekhi yamapayipi, kunciphisa izinga lokuhluleka kwenethiwekhi yamapayipi, kodwa futhi kuthuthukisa kakhulu ukubukeka kwedolobha kanye nemvelo.