ISO 580:2005规定了两种评估注塑热塑性塑料管件加热效果的方法——方法A（使用空气烘箱）和方法B（使用液体浴）。如有异议，方法A为参考方法。ISO 580:2005适用于水泥焊接配件、法兰配件和包含弹性密封件的配件，以及由多个模制零件（如活接头）组成的配件。它适用于压力和非压力配件。

ISO 580:2005 specifies two methods for assessing the effects of heating on injection-moulded thermoplastics pipe fittings -- method A, using an air oven, and method B, using a liquid bath. In case of disagreement, method A is the reference method. ISO 580:2005 is applicable to cement-welded fittings as well as to flanged fittings and fittings incorporating elastomeric seals and to fittings consisting of the assembly of several moulded parts (e.g. union connectors). It is applicable to both pressure and non-pressure fittings.