PLASTICS PIPING SYSTEMS FOR SOIL AND WASTE DISCHARGE (LOW AND HIGH TEMPERATURE) WITHIN THE BUILDING STRUCTURE. STYRENE COPOLYMER BLENDS (SAN+PVC). PART 1: SPECIFICATIONS FOR PIPES, FITTING AND THE SYSTEM
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1部分:管道、配件和系统规范