Incazelo Yephrojekthi
Izigaba: I-Insulation Materials
Isicelo
Ukunakwa okukhethekile:
Ububanzi ububanzi obuyisicaba befilimu ye-PVC. Ukubala ububanzi bomkhono, sicela ubheke ifomula elandelayo:
Ububanzi=Ububanzi obucaba x2/3.14
Ngokwesibonelo, ububanzi obuyisicaba bungama-90mm, futhi ububanzi bucishe bube ngu-57mm (90×2/3.14 ≈ 57)




