2. It is strictly forbidden to use cast iron or cast steel chenis. The buckle body can be forged with killed steel, and the shaft pin can be machined after forging from bar material.
3. Thecheni haifanire kucherwa kana kusunganidzwa kuti igadziriswe. Mushure mekunge bhuremu remuviri uye pini yemubato yaremara zvachose, hapana kugadzirisa kunobvumidzwa.
4. Paunenge uchishandiswa, tarisa bhuremu muviri uye bhaudhi, uye dzivisa zvakakomba kupfeka, deformation uye kuneta kutsemuka.
5. Kana ichishandiswa, nzvimbo yakatwasuka haifanire kuitirwa kunetsekana, uye pini yemubato inofanira kuiswa nepini yekuchengetedza.
6. Mushure mekunge pini yemubato yaunganidzwa nemazvo, hupamhi hwemuviri wesimbi haufanirwe kuderedzwa zvakanyanya, uye kubatana kwakapetwa kwakanaka.
7. Kushandiswa kwechenishaifanire kupfuura yakatarwa mutoro wakachengeteka.
