Plastics pipes and fittings — Dimensions of sockets and spigots for discharge systems inside buildings — Part 3: Polypropylene (PP)
塑料管道和配件——建筑物内排放系统的插座和插口尺寸第3部分:聚丙烯(PP)
Specifies the design formulae and the derived dimensions, together with tolerances, of sockets and spigots for joints and for integral sockets of PP pipes intended for use in discharge systems inside buildings where such joints are intended to accommodate expansion and contraction.