1. Amasayizi ahlukene: Ngokusho komumo, isicupho samanzi singahlukaniswa ngohlobo lwe-P nohlobo luka-S.Ngokusho kokuqukethwe, ingahlukaniswa ngensimbi engagqwali, i-PVC kanye nokufakwa kwamapayipi e-PE.Ngokusho kobubanzi bepayipi lomgibe wamanzi, lingahlukaniswa libe ngu-40, 50, DN50 (ipayipi lama-intshi angu-2, 75, 90 ...
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