Si loo daboolo shuruudaha kala duwan ee dhismaha ee kordhinta isticmaalka horumarka, kordhinta nolosha birta galvanized, walxaha daahan zinc ayaa soo koraya. Dahaarka cusub ee ugu weyn waa:

(1) Dahaarka dahaadhka zinc-birta ah. Taas oo birta galvanized ka dib daaweynta kulaylka. Sida faafinta faafinta ee 500 ~ 550 ℃ 10 ~ 15min, waxay siin doontaa tuubada galvanized ee saliidda waxay kordhisaa nolosha ku dhawaad ​​​​9 jeer;

(2) Lakabyo badan ama galvanized ah oo ka kooban raad walxeedyo. Sida ku darista qadar ku habboon oo nikel ah ayaa awood u leh inay daxaliyaan marka loo eego horumarka tuubooyinka elektro-galvanized saafiga ah in ka badan 10 jeer;

(3) Dahaarka isku dhafan. Taasi waa iyada oo la adeegsanayo dhismaha baahida, birta galvanized ee lagu daboolay lakabka alaabta dabiiciga ah ee ku habboon, sida daxalka, caabbinta heerkulka sare, caabbinta qabow, xirashada caabbinta, caabbinta saameynta iyo kordhinta dabacsanaanta, iwm, waxaan sii la kulmi karnaa hal ama dhowr shuruudood oo sare. Haddii daahan midabka, iyo sidoo kale qurxinta iyo saamaynta calanka.