Úsáidtear PVC go forleathan i bpíopaí uisce agus séarachais, go bunúsach is flanges beaga iad flanges 200 agus thíos, tá sonraíochtaí DN25 (bore 32, píopa meaitseála 32), DN40 (bore 45, meaitseáil 45 píopa), DN50 (bore 57), DN80 (bore 89), DN100 (bore 108), DN150 (bore 159) … Is iad na flanges thuas go bunúsach 4 poill...
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