Chidende chimapangidwa ndi zinthu zapamwamba kwambiri ngati zikwangwani za polyurethane kapena mapanelo opangidwa kuti achepetse kutentha kapena chitsulo chosapanga dzimbiri chifukwa chokana kutentha pang'ono.
Zogulitsa zingapo izi zimakhala ndi voliyumu yoyenerera ndipo imapereka chisankho chabwino kwa ogwiritsa ntchito omwe akufunika kusunga zitsanzo zazomwe amafunikira kuti asunge zitsanzo zamadzimadzi m'nyumba yayitali pansi pa nthawi yayitali.
Mfundo yogwira ntchito yamadzi yosungirako madzi a nitrogen yosungirako ndi kwa nitrogen ndipo amasunga mu thanki yamkati.
Thanki yamadzi yosungirako ya nitrogen yosungirako imakhala ndi thupi lakunja, thupi lamkati, lotumbulu wosadya, mawonekedwe amadzimadzi, valavu yamadzimadzi, valavu yamatayala.
Thank yosungirako ya nitrogen yosungirako ndi yowirikiza kawiri patupamwamba ya vacuum yosungika yosungirako. Thanki yamkati imapangidwa ndi chitsulo chosapanga dzimbiri, ndipo thanki yakunja imapangidwa ndi Q235B kapena Q345R.
Pazinthu zambiri, kusungidwa kwa nthawi yayitali mufiriji kumabweretsa kuchepa kwa zinthu, koma mwachitsanzo, zipatso monga malalanje angasungidwe pa 0 ℃ kwa sabata limodzi, ndipo -50 ℃ kwa miyezi iwiri.
