1: Makhalidwe a mipope yachitsulo yowongoka ali ndi njira yosavuta yopangira, kupanga bwino kwambiri, mtengo wotsika, chitukuko chofulumira, komanso kukhazikika kwabwino. Ubwino wa welded zitsulo chitoliro mankhwala angafanane ndi mipope zitsulo zopanda msokonezo, njira kupanga ndi yosavuta, ndipo n'zosavuta kusintha specifications mankhwala ndi kupanga. Mtengo wake ndi wotsika kuposa wa mapaipi achitsulo osasunthika, motero kagwiritsidwe ntchito kake kakuchulukirachulukira chaka ndi chaka ndipo kuchuluka kwake komwe kumagwiritsidwa ntchito kukukulirakulira.

2: Maonekedwe a epoxy resin: Filimu ya penti ikachiritsidwa ndi epoxy resin imakhala yolimba komanso yosagwira madzi, yopanda poizoni, ndipo siyiipitsa madzi. Kumamatira kwamphamvu, kumamatira bwino pakati pa mafilimu a utoto. Ili ndi zinthu zabwino kwambiri zolimbana ndi dzimbiri komanso zosagwira madzi ndipo imagwiritsa ntchito zida zabwino kwambiri zothana ndi dzimbiri kuti zitsimikizire kuti zimagwira ntchito bwino. Ili ndi mphamvu zamakina abwino, filimu ya utoto yolimba, kukana kuvala, komanso kukana mphamvu. Zomwe zili zolimba ndizokwera ndipo filimu yophimba ndi yokhuthala. Amachiritsa firiji kupanga filimu. Palibe chifukwa chachikulu choyanika zida. Zovala za epoxy ndizopanda poizoni, kuonetsetsa chitetezo cha madzi.