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Multi-Pressure Grade PVC-U Plastic Water Pipe DN20-DN630 for Urban Water Pipeline Renovation. Lead-free food-grade raw material meets drinking water standard, no secondary pollution for safe potable water delivery. Corrosion-resistant & smooth inner wall reduces flow resistance, saving long-term pump operation cost for water pipeline projects. Rubber ring socket connection enables fast installation; rated service life reaches up to 50 years under normal working pressure.