... deep well 3. city trench 4. terra drinking water project About us Suzhou Aichi Pipe professional production of ... pipe5. convenient installation, adopt aprons way to stop water, good sealing performance, easy maintenance and replacement6. suitable ... , long life7. Non pollution, in accordance with national water standards NoItemrequirements1Elongation at break,%≥ 3502Longitudinal shrinkage rate (110 ° ...