Internal protection by polymeric lining for ductile iron pipes — Requirements and test methods — Part 1: Polyurethane lining
球墨铸铁管用聚合物衬里的内部保护.要求和试验方法.第1部分:聚氨酯衬里
This document specifies the requirements and test methods applicable to factory applied internal polyurethane lining for ductile iron pipes according to ISO2531, ISO7186 and ISO16631.
It covers internal linings for use in the conveyance of raw water, potable water and sewage water for operating temperature up to 50?°C.