I-1, Esimweni sokungasebenzi kwenqubo yokushisela ipayipi, kufanele kube okufanelekile ukwandisa ubude obugciniwe, i-epoxy powder ekupheleni kwe-polyethylene layer ingavinjelwa ngenxa yepayipi yensimbi inqwaba isikhathi eside, ukugqwala kwensimbi yepayipi okubangelwa ukuqina kwe-3 I-PE anticorrosive iba unqenqema olusontekile.

2, Anticorrosive ipayipi isikhathi eside, efakwe emoyeni evulekile uzobe embozwe ipayipi, ukuvimbela ukuguguleka kwemvula, okubangela esinzima ukugqwala ipayipi ekupheleni.

3, Uma umjikelezo wokwakhiwa kwenkambu yamapayipi umude, kungaba amabhulashi e-besmear ashisekayo avikela ukugqwala kapende wensimbi angenalutho, ukuvikela ipayipi lokugqwala elibangelwa ukugqwala ngesikhathi sokugcinwa kwe-PE enama-3 abe onqenqemeni olusontekile.

Ngaphezulu kuka-4, ukulawula okuqinile kwesiphetho se-tube agodliwe ekugayeni kwe-weld ngekhwalithi ephezulu. I-Polyethylene ezitolo ze-weld slope kanye nawo wonke umzimba wepayipi, yenza i-epoxy powder reserved ubude > 20 mm, ukuze kuvinjwe ama-welds epoxy powder phansi kokugqwala okubangelwa ungqimba lokuqala lwe-3 PE anticorrosion lube unqenqema olusontekile.