Flanges na casing suna da mahimmanci a matsayin abubuwan haɗin gwiwa na gine-gine da kuma kaɓe-kaɓe na goyon bayan waɗanda suke wani ɓangare na tsarin nailing ɗin ƙasa da na casing wanda ake amfani da shi a cikin ayyukan gina ƙasa da kuma tabbatar da ƙasa. Waɗannan abubuwan metal da aka ƙarfafa, wanda aka yi su kai tsaye daga steel mai ƙarfi, suna aiki don haɗa sassan casing pipe masu zuwa a lokaci guda kuma suna rarraba kai tsaye da kuma riƙe tsarin a duk tsawon zurfin da aka gina. A cikin ayyukan nailing ɗin ƙasa, flanges na casing suna aiki a matsayin mahalli na haɗin gwiwa tsakanin sassan casing na ɗanɗano, wanda ke haifar da wata casing string ɗaya da kuma ɗanɗano wanda zai iya jure lakacin hagu, ƙarfin ƙaƙƙarfa, da kai tsaye da aka yi a kusa da ƙasa da ƙasa. Tsarin flange yawanci ya haɗa da daɗaɗɗun bolt holes don ɗaure na mechanic, haɗe-haɗe na welding ko na luɓe zuwa jikin casing, da kuma kaɓe-kaɓe na goyon bayan waɗanda ke canza kai tsaye zuwa sassan pipe masu kusa. Waɗannan abubuwa suna da mahimmanci lokacin aikawa da yanayin geotechnical masu ɗauƙi, gami da ƙasashen ƙasa marasa tabbas, strata masu ɗauke da ruwa, da kuma bututun karkashin ƙasa waɗanda ke buƙatar goyon bayan casing na ci gaba don hana rushewar ƙasa da kuma tabbatar da amincin ma'aikata a lokacin ayyukan drilling da installation.
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