Downpipes normally drain rainwater near the ground or directly to the ground level either with a 45 °bend or within the drainage net through a drain well box or a direct connection; in the above mentioned cases pipes may be damaged because of strong shocks or for other accidental reasons. That’s why First Plast has created an effective solution to prevent this risk: a special mixture of raw materials for a shock-proof product: DAUPHIN terminal pipes, available in diameter 80mm and 100mm, are an optimal solution to replace traditional metal or cast iron pipes.