标准摘要
[中文适用范围]： 规定了由 PVC-U 制成的带插口端的管件（具有弯曲入口和分支的承插管件）主要类型通用的直径系列和尺寸计算公式。 [外文原描述]： Specifies the series of diameters and the formulae for calculation of the dimensions common to the main types of fittings with spigot ends (socket fittings with curved entries and branches) made of PVC-U.
英文名称Pipes and fittings of plastics materials — Fittings for domestic and industrial waste pipes — Basic dimensions: Metric series — Part 1: Unplasticized poly(vinyl chloride) (PVC-U)