Iyi firime yo gupfunyika ijyanye n'imiterere y'ikintu icyo ari cyo cyose kandi irayifata ubwayo. Ikoreshe mu gupfunyika amakarito n'imitwaro ya palati nta kaseti, imigozi, cyangwa inyunganiramitwe, kandi irinda ubushuhe, umwanda, no kwangirika. Gupfunyika bifite ubugari bwa santimetero 20 cyangwa santimetero 50 birahuye n'imashini zo gupfunyika zikoreshwa mu buryo buhanitse.
| Ingano y'ubunini | Imbaraga zo Gufata (Ubugari bwo mu ruhande) | Kurekurana mu gihe cyo kuruhuka (Longitudinal Laterial) | Imbaraga z'Amarira y'Umumarayika (Longitudinal Laterial) | Ubushobozi bwo kugira ingaruka cyangwa Pendulum | Uburiganya | Igipimo cyo kohereza urumuri (Gisobanutse) | Ubucucike bw'ibikeri (Filime isobanutse) |
| Mikoroni | Mpa≥ | %≥ | N/mm≥ | J≥ | N/cm≥ | %≥ | %≤ |
| 15-17 | 37 | 350.500 | 120 | 0.14 | 3 | 93 | 2.4 |
| 18-20 | 38 | 400.600 | 120 | 0.15 | 3 | 92 | 2.5 |
| 21-25 | 39 | 400.600 | 120 | 0.17 | 3 | 91 | 2.6 |
| 26-30 | 40 | 400.650 | 120 | 0.19 | 3 | 90 | 2.7 |
| 31-35 | 41 | 450.700 | 120 | 0.21 | 3 | 89 | 2.8 |


















