I-coating anticorrosion iyi-uniform futhi iminyene enamathelayo eyakhiwe phezu kwamapayipi ensimbi angagqwali, angayihlukanisa emithonjeni ehlukahlukene yokugqwala. Amapayipi ensimbi avikela ukugqwala aya ngokuya esebenzisa izinto eziyinhlanganisela noma izakhiwo eziyinhlanganisela. Lezi zinto kanye nezakhiwo kumele zibe nezakhiwo ezinhle ze-dielectric, izakhiwo ezibonakalayo, izakhiwo zamakhemikhali ezizinzile, kanye nebanga lokushisa elibanzi.

Izindonga zangaphandle ezilwa nokugqwala: Izinhlobo nezimo zokusetshenziswa zezingubo zangaphandle zamapayipi ensimbi. I-Inner wall anti-corrosion coating Le filimu isetshenziswa odongeni lwangaphakathi lwamapayipi ensimbi ukuze kugwenywe ukugqwala kwamapayipi ensimbi, ukunciphisa ukumelana nokungqubuzana, nokwandisa umthamo. Izingubo ezivame ukusetshenziswa yi-amine-cured epoxy resin ne-polyamide epoxy resin, futhi ukujiya kokumboza kungu-0.038 kuya ku-0.2 mm. Qinisekisa ukuthi ukugqoka kuhlanganiswe ngokuqinile odongeni lwamapayipi ensimbi.

Ukwelashwa kwendawo kufanele kwenziwe odongeni lwangaphakathi lwepayipi lensimbi. Kusukela ngawo-1970, into efanayo iye yasetshenziswa ukuze kuhlanganiswe izindonga zangaphakathi nangaphandle zamapayipi ensimbi, okwenza kube nokwenzeka ukumboza kokubili izindonga zangaphakathi nangaphandle zamapayipi ensimbi ngesikhathi esisodwa. Izingubo zokuvikela ukugqwala nezishisayo zisetshenziswa kuwoyela ongahluziwe wokudlulisa ukushisa amancane naphakathi nobubanzi obuphakathi noma amapayipi ensimbi kawoyela kaphethiloli ukuze kuncishiswe ukunqamuka kokushisa kusuka kumapayipi ensimbi kuya emhlabathini.

Isendlalelo esiyinhlanganisela se-thermal insulation kanye ne-anti-corrosion yengezwe ngaphandle kwepayipi lensimbi. Izinto ezisetshenziswa kakhulu zokuvikela ukushisa ziyigwebu le-polyurethane eliqinile, futhi izinga lokushisa elisebenzayo ukuthi le nto ithambile. Ukwandisa amandla ayo, ungqimba lwe-polyethylene ephezulu-density lusetshenziswa ngaphandle kwe-insulation ukwakha isakhiwo esiyinhlanganisela ukuvimbela ukungena kwamanzi avulekile ku-insulation.