Kwimibhobho yobushushu engcwatyiweyo, ubume bombhobho kufuneka bulawule ukulahleka kobushushu kwaye bugcine amanzi kude ne-insulation. Uyilo oluqhelekileyo lusebenzisa umbhobho ophethe intsimbi, i-PU foam kunye nefiber yeglasi eqiniswe ngeplastiki ngaphandle kwesigqubuthelo. Inxalenye yentsimbi ithwala amanzi ashushu okanye inkqubo yolwelo. Ugwebu lucothisa ukuhanjiswa kobushushu. Isigqubuthelo sangaphandle sikhusela i-insulation ngelixa umbhobho ugcinwa, uphakanyiswe, ubekwe emseleni kwaye uhlanganiswe nomhlaba.
Idatha yezinto eziphathekayo kufuneka ihlolwe phambi kokuba kufakwe iodolo. I-Q235B kunye ne-Q345B intsimbi zombini zisetyenziswe kwizinto ezibhekiselele, kwaye umbhobho ophetheyo unokuthi ungabinamthungo okanye u-spiral welded. Kwi-insulation layer, amanqaku aluncedo avaliwe{4}}umxholo weseli kunye nexabiso le-thermal: i-foam ingacaciswa kwi-92 yeepesenti zeeseli ezivaliweyo okanye ngaphezulu, kunye ne-thermal conductivity engekho ngaphezu kwe-0.033 W/(mK). Apho umhlaba umanzi, unobungozi okanye ushushu kunesiqhelo, ijacket ye-FRP inokuchazwa kwi-3 mm okanye ngaphezulu ukunika i-foam engcono yokukhusela ngaphandle.
Umzobo kufuneka udwelise i-diameter yangaphandle, ubukhulu bodonga lwentsimbi, udonga lokugquma, ubude bombhobho kunye nefom yokuphela. Ezi nkcukacha zibalulekile kuba imveliso ayikho nje umbhobho. Ingumzimba wombhobho odibeneyo kunye ne-carrier layer, i-insulation layer kunye negobolondo ekhuselayo. Idatha ecacileyo inceda i-factory ukukhetha ubukhulu be-foam, amandla okusonga kunye nendlela yokutywina ngokubambisana kwendlela yokwenyani, endaweni yokwenza umbhobho ogqunyiweyo jikelele ongafanelanga iprojekthi.
