Korrosionka Dheerka iyo Dheerka Jirka
Nidaamka buubnaha pvc ee dhaadhacsiga ay leeyihiin ammaan-dheer, taasoo ah mid ka mida aragtiyada ugu muhiimsan ee kalsoonidha iyo in la xadgudbiyo lacag. Sidaas daraaddeed nidaamka buubnaha fedfeda, buubnaha fulinta ay qalifdaan hababka isku-dhafka iyo xaalado kiimikahay, nidaamka buubnaha pvc ay inta aad uga jiro in la dhiso iyo ilaaliyo ay sii wada joogo. Sababta ammaanka-amaan-kala-dheer ee ku jira waxa uu ka soo baxaa aragtiyada dhaxalka polyvinyl chloride, kaas oo kale ku jiraan in kimiyaawi ah marka loo shaqeeyo wasto noocyada guduudka guriga iyo sare. Nidaamka buubnaha pvc ay iman lahayd asiduhu, alkalis, maleelaha, iyo kompoolkii orgaanik ee si habboon loogu yaqaan dhammaan afraadka biyaha, iyagoo aan la jebin in lagu badalo ama awooddu hoos u socdo. Ammaan-dheerkan ayaa si degdeg ah ugu horeysaa ganacsi iyo jeedka, ilaa in ay ilaaliyaan kan la jabin karo sababtoo ah kiimikaha dhulka, biyaha barafka, iyo xaaladda hanga, kan la jabin karo sababtoo ah noocyada kale. Maalka ay fursado sii ammaan-dheerka kan, iyadoo la xadgudbinayo lacagta beddelida iyo in la ilaaliyo yar yaraad inta aad uga jiro nidaamka. Buubnaha pvc ay diidayda in la jabin karo rust particles (qalaf) ay dhasho dhammaan afraadka biyaha ama in awooddu hoos u socdo sababtoo ah kororinteed. Sidoo kale, farshaxanka buubnaha pvc ay diidayda in la jabin karo scale buildup iyo maleelaha ay si habboon ugu dhacaan buubnaha fulinta, iyagoo ilaalinaya awoodda kor saaran inta aad uga jiro nidaamka. Qaybinta jirka, hal-abbaarka, iyo kororsinteed ma jebin in ay ammaan-dheerka buubnaha pvc ay hoos u socdaan, iyagoo ilaalinaya awoodda degdeg ah oo dhan dhulankii. Kanaduugga waxa uu u dhashaa illowlaamoob badan oo had iyo jidad, iyagoo aan la jabin in ay xadgudbiyo lacagta mar walba oo la beddelo buubnaha, kaas oo ku dhashaa buubnaha pvc inay tahay dabada raax leh guriga, horumarinta, iyo sare, halkaas oo qiimaha dheer-dhexe iyo awoodda guulaysan ay tahay magacaas.