Makina osokoneza bongo osokoneza bongo ambiri ovala zingwe zowonongeka kwambiri.
1, kuvala-back yosungirako makonzedwe amafunika kupereka zinthu zosagwirizana ndi zingwe, zokhudzana ndi mitundu. Zovala zolimbana ndi zingwe zili ndi gawo la Coundramic, chromium yovala zitsulo zosemphana ndi kutentha, kutentha kwambiri kwa zipolopolo. Kuvala kosakanikirana kumafunikira kuti mupange zinthu zomwe zikugwirizana nazo malinga ndi momwe zimakhalira.
2. Fotokozerani mitundu yochepetsetsa, kuphatikizapo ngodya, kuwerama radius, chipilala chachitsulo ndi makulidwe. Mwachitsanzo, 90 digiri yovala-ponseponse DN150 * 8 R {ceramic makulidwe 4mm. Anbow Abwino madigiri 90, ena 60 madigiri 45 madigiri 40mm makulidwe a 150m, R. Dongosolo lakunja la ceramic iyi limapangidwa kuti likhale 180mm, koma osati 159mm, zomwe sizingatsimikizire m'mimba mwake.
