Screw Byateguwe neza screw & barrel kuri Bakelite, itunganywa nimbaraga zikomeye bi-metalli ibyuma biranga anticorrosion andabradability.
● Koresha ibikoresho bya peteroli, kugirango umenye neza niba neza & stabilite yo kugenzura ubushyuhe.
Materials Ibikoresho byiza bya plastike yububiko nka bakelite, kumena imikorere no gusohora.
Gusimbuza screw & barrel, birashobora guhinduka mumashini yububiko bwa thermoplastique.