Mtedza wa bolt
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Anyezi otentha
Dzina: Bolt ndi mtedza
Kukula: M1.6-M46
Zida: chitsulo chosapanga dzimbiri, chitsulo cha kaboni
Muyezo: Din, Astme / ANI JIS ENA kujambula
Gawo: 3.6,4.6,4,5.8,6.8,8.8,90.8,12.9 etc
Kutsiriza: zinc wakuda, hop lovi a galvanated (hdg), oxide akuda, nickel okwera, zinc-nickel wopangidwa