2. It is strictly forbidden to use cast iron or cast steel pingus. The buckle body can be forged with killed steel, and the shaft pin can be machined after forging from bar material.
3. Thepingu haipaswi kuchimbwa au kulehemu kukarabati. Baada ya mwili wa buckle na pini ya shimoni kuharibika kabisa, hakuna marekebisho yanayoruhusiwa.
4. Wakati unatumiwa, angalia mwili wa buckle na bolt, na epuka kuvaa sana, deformation na nyufa za uchovu.
5. Wakati unatumiwa, nafasi ya usawa haipaswi kukabiliwa na mvutano, na pini ya shimoni lazima iingizwe na pini ya usalama.
6. Baada ya pini ya shimoni imekusanywa kwa usahihi, upana wa mwili wa buckle haipaswi kupunguzwa sana, na unganisho la nyuzi ni nzuri.
7. Matumizi yapingushaitazidi mzigo uliowekwa salama.
