Don hana nodular simintin manhole murfin manhole daga rushewa a karkashin kasa da kuma tsawaita rayuwar sabis na hanyar sadarwa na bututu, ya kamata a lulluɓe saman saman murfin manhole na baƙin ƙarfe tare da fenti na kwalta, sa'an nan kuma a cika shi cikin sito. Domin ƙara haɓaka juriya na juriya na simintin manhole na simintin ƙarfe, simintin manhole na baƙin ƙarfe masana'antun suna buƙatar fesa tutiya a saman saman murfin manhole baƙin ƙarfe. Za mu iya yin nau'i-nau'i daban-daban na jiyya na simintin ƙarfe na baƙin ƙarfe.
Kamar fentin guduro epoxy, zafi tsoma galvanizing da sauransu Cast iron manhole murfin tsatsa; Lokaci-lokaci za a sami tsatsa kafin ko lokacin samar da murfin rami na simintin ƙarfe, wanda ke nuna cewa bayyanar ta ƙazantu sosai. Dole ne a goge murfin rami mai tsatsa kuma a harbe shi don cire tsatsa, kuma dole ne a bincika saman kafin a bar masana'anta.