ISO 8773:2006规定了用于无压地下排水系统的聚丙烯（PP）管道、配件和管道系统的要求，用于输送生活和工业废水以及地表水。 它包括埋地管道工程，以及埋在建筑结构内的管道系统。 在工业排放的情况下，有必要考虑耐化学性和耐温度性，但这需要单独进行。 ISO 8773:2006适用于带或不带整体套筒的PP管，以及通过带密封圈的推配合接头或对接熔焊接头进行连接。 它涵盖了具有正常E模量和更高E模量的PP材料，命名为HM（更高模量），并给出了一系列标称尺寸和管道系列，以及有关颜色的建议。 ISO 8773:2006还规定了其中提及的试验方法的试验参数。

ISO 8773:2006 specifies the requirements for polypropylene (PP) pipes, fittings and piping systems intended for use for non-pressure underground drainage and sewerage for the conveyance of soil and waste discharge of domestic and industrial origin, as well as surface water. It covers buried pipework, as well as piping systems buried within the building structure. In the case of industrial discharge, it is necessary that the chemical and temperature resistance be taken into account, but this will need to be done separately. ISO 8773:2006 is applicable to PP pipes with or without an integral socket and to jointing by means of push fit joints with sealing rings or butt-fused joints. It covers PP materials with normal E moduli and with higher E moduli, designated as HM (higher modulus), and gives a range of nominal sizes and pipe series, as well as recommendations concerning colours. ISO 8773:2006 also specifies the test parameters for the test methods referred to therein.