Umshini wokwenza umqulu we-CZ purlin ozenzakalelayo onokushaya kwangaphambili nokusikwa ngaphambili
I-1.Umshini owodwa ungenza wonke amasayizi we-C (iwebhu: 80-300mm, ukuphakama 35-80) no-Z (iwebhu: 120-300mm, ukuphakama 35-80), alungiswa uhlelo lwe-PLC oluzenzakalelayo ngokugcwele.