指定压力管道的聚乙烯/金属适配器配件和聚丙烯/金属适配器配件的螺纹设计长度和尺寸。它还指定了管件承插端的尺寸。

Specifies the design lengths and size of threads for polyethylene/metal adaptor fittings and polypropylene/metal adaptor fittings for pipes under pressure. It also specifies the dimensions at the socket and spigot ends of the fitting.