Iimfumba ze-Screw
-
Iimfumba ze-Screw zokwakha isiseko esinzulu
I-Screw piles sisikrubhu sentsimbi yokugquma kunye nenkqubo yeankile yomhlaba esetyenziselwa ukwakha iziseko ezinzulu.Iimfumba ze-Screw ziveliswa kusetyenziswa ubukhulu obahlukeneyo bemibhobho ye-tubular amacandelo engqumba okanye i-ankile shaft.
