Abubuwan casing string suna da mahimmanci a cikin ayyukan nailing na ƙasa da micropiling, suna aiki a matsayin hanyar steel primary ta hanyar wacce ayyukan gini ke gudanarwa a cikin yanayin kasa mara daɗi. Waɗannan tsarin tubular, wanda aka fi sani da seamless ko welded steel pipe, suna aiki a matsayin goje na wucin gadi da na dindindin a lokacin tsarin micropiles, anchors, da abubuwan nailing na ƙasa. Casing string ya aiki a matsayin bango na goje daga rugujewar borehole yayin da yake ba da hanyar kai tsaye ga makamashi na gini wanda aka watsa ta hanyar tsarin gini. A cikin ayyukan nailing na ƙasa, abubuwan casing string suna kiyaye ingancin hole a lokacin drilling da grouting, musamman a cikin layers na ƙasa mara ƙarfi, fractured, ko saturated inda unconsolidated materials ko fractured rock za su ruguje cikin borehole.
Casing pipes da aka yi wa threaded flanges sune kayan aikin muhimmin sashi a cikin tarin casing string na musamman da ake amfani da su a cikin ayyukan soil nailing da ground reinforcement. Waɗannan casings na musamman suna ƙunshe da threaded flanges na precision-machined waɗanda suka ba da damar yin nasara na mechanical connections tsakanin segments na pipe, suna soke buƙatar yin amfani da hanyoyin welding ko crimping na al'ada da ake amfani da su a cikin tsarin casing na al'ada. Tsarin threaded flange ya ba da ƙarfin ginin ginin na ƙarfi yayin da yake ba da damar taro da taro na sauri a filin, rage operational downtime, da kawar da ingancin gini a kan ayyukan geotechnical masu wahala.
Casing shoes suna wakiltar kayan aikin muhimmin sashi a cikin ayyukan gine-gine na kasa da yin kati na borehole, suna aiki a matsayin guide da protective element a ƙarƙashin tarin casing. Waɗannan attachments na musamman an tsara su don sauƙaƙa shigar da casing ta hanyar yanayin ƙasa masu wahala kuma suna hana lalacewa ga casing a lokacin shiga cikin cohesive soils, sandy layers, da rocky formations. A cikin yanayin ayyukan soil nailing da sauran hanyoyin ground stabilization, casing shoes suna aiki a matsayin kayan aikin muhimmin waɗanda suka ba masu aikin gini damar ci gaba da protective steel tubes na sauri ta hanyar yanayin ƙasa daban-daban yayin da suke riƙe ƙarfin ginin ginin da verticality. Zaɓin da amfani da casing shoes na dace suna dogara da irin ƙasa, zurfin bore, da masu geotechnical da ake samu a kowace shafin aikin gini.
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.