Umbhobho ogqityiweyo wentsimbi uyakhutshwa emva kokupholisa amanzi, kodwa emva kwayo yonke loo nto, emva kokufudumeza ubushushu obuphezulu, iqondo lobushushu lombhobho wentsimbi lisephezulu kakhulu emva kokupholisa kwamanzi, ngoko ke kufuneka kuqatshelwe la manqaku alandelayo emva kokuba umbhobho ojikelezayo ususiwe. ihlobo :

Enye: Kwinkqubo yokuvelisa umbhobho wensimbi ojikelezayo, i-epoxy powder kunye ne-adhesive kufuneka ibe yi-1% enkulu kunesiqhelo, ukuze kufezekiswe ubukhulu obufunekayo.

Okwesibini: Musa ukuveza ubushushu obuphezulu emva kokuba umbhobho wentsimbi ejikelezayo ukhutshiwe emgceni.Ukubonakaliswa kunokukhokelela ngokulula ekwandiseni umgca we-PE kwaye ngaloo ndlela udonga lwangaphandle lombhobho wensimbi, olungayi kufezekisa umphumo wokuchasana nokubola.

Ezintathu: Musa ukuchanabeka emvuleni emva kokuba umbhobho wentsimbi ejikelezayo ukhutshiwe emgceni.Kulula ukwenza amanzi aphume kumbhobho odibeneyo emva kwemvula.

Isine: Emva kokuba umbhobho wensimbi ojikelezayo ukhutshwe emgceni, kufuneka ubekwe kwindawo ethe tyaba, kwaye kufuneka ubekwe phantsi.Musani ukucudisana.Ukuba uhlobo lwe-extrusion lubekwe ubuncinane kwiiyure ezingama-24, i-PE layer kufuneka ifakwe ngokupheleleyo eludongeni lwangaphandle lombhobho wensimbi..

Isakhiwo se-3PE sokuchasana nomhlwa:

Ibakala eliqhelekileyo ≥ 0.70 umaleko omnye weprimer + umaleko omnye womaleko wangaphakathi + umaleko omnye webhanti yangaphandle

Ibakala elomeleziweyo ≥ 1.40 umaleko we-primer + umaleko wangaphakathi (i-overlap yi-50 ~ 55% yobubanzi betape)

Omnye umaleko we tape yangaphandle (ukugqithelana ngama 50 ~ 55% yobubanzi be tape )

Isetyenziselwa ikakhulu ukuhanjiswa kweoli kunye negesi yendalo;umphezulu wangaphandle wemibhobho yentsimbi engcwatyiweyo efana nokunikezelwa kwamanzi kunye nokuthuthwa kwamanzi kunye nokuthuthwa kwegesi kwimichiza kunye nokwakhiwa kwedolophu i-anti-corrosion, eneempawu zokwakha ezifanelekileyo kwaye akukho ngcoliseko.I-polyethylene PE ye-anti-corrosion tape yokubambelela isetyenziswe ngokubanzi njengento yangaphandle yokulwa ne-corrosion kwimibhobho yentsimbi yeoli kunye negesi ukususela kwi-1960s.Isetyenziswe iminyaka engaphezu kwama-40.Ngenxa yokusebenza kwayo okugqwesileyo kokuchasene nokubola kunye nokusebenza kakuhle kolwakhiwo, iyenze ibe yinto echasene ne-corrosion kwimibhobho.Inkqubo inendawo ethile.Kwaye ekubeni amashishini imveliso tape ukutyabeka polyethylene ngokuqhubekayo ukuphucula kunye nokwandisa polyethylene PE ezahlukeneyo kunye nomgangatho anti-ukuhlwa encamathelayo tape, ukuze izicelo polyethylene PE izicelo anticorrosion ingcina tape ukwandisa.