Plastics piping systems for soil and waste discharge (low and high temperature) within the building structure. Styrene copolymer blends (SAN+PVC). Part 2: Guidance for the assessment of conformity.
建筑结构内土壤和废物排放(低温和高温)用塑料管道系统 苯乙烯共聚物共混物(SAN+PVC) 第2部分:合格评定指南