Dhuumaha birta isku dhafan ee dhoobada ah ee gaadiidka iyo rakibidda waa mid aad u habboon, dhoobada dhoobada isku dhafan ee tuubada birta ah iyo birta birta ah, tuubada shubka alwaaxa adkaysta, tuubada birta ah iyo isbarbardhigga tuubooyinka dhagaxa, miisaan yar, sahlan in la qaado.Dhuumaha birta isku dhafan ee dhoobada leh waa la isku dhejin karaa, flanges, xirayaasha dabacsan iyo hab kale oo isku xirnaanta degdega ah, sidaas darteed rakibidda sidoo kale waa mid aad u habboon.

By Warshadaha:
1. U adkaysiga xidhashada sare ee tuubooyinka loo baahan yahay: tamarta kulaylka, dambaska warshadda kulaylka (slag) gaadiidka, dhuumaha dhuxusha, dabada xoogga leh iyo dhuumaha xoogga leh, dekedaha iyo dhuumaha slurry dhuumaha miiray dhuxusha iyo wixii la mid ah.
2. Doorashada dhexdhexaadka ah ee cufan (la dhaqay) dhirta dhuxusha dhuumaha dhuxusha, shuruudaha iska caabinta daxalka sare ee tuubooyinka saxarka saxarka korontada.
3. Dhuumaha aluminium dhalaalaysa.
4. U baahan caabbinta xirashada sare, caabbinta daxalka sare, heerkulka sare ee noocyada kala duwan ee kanaalada.