Green and white PPR16 PPR Ukusetshenziswa okukhethekile kwamanzi okubandayo ngaphakathi
Ngohlelo lwethu lwe-saning piping, amashubhu aluhlaza angagcina ikhwalithi yamanzi enhle kakhulu yokuphuza isikhathi eside, futhi ukusetshenziswa noma ukusetshenziswa kwamanzi okuphuza akusoze kwaba usongo empilweni yabantu. Ukungamelana nokugqwala, okungekho okungcolile, futhi akukho phunga noma ukunambitha amanzi ageleza ngalo. Ukusebenza kwayo kwezobuchwepheshe nokusebenza kwayo kuqinisekisiwe emhlabeni wonke. Ngokuphepha futhi kufakwe kalula kusuka ku-20 kuye ku-60 mm ukuqinisekisa ukuhanjiswa kwamanzi aphathekayo