ISO 22391的本部分规定了由以下材料制成的管道的特性: -I型耐高温聚乙烯（PE-RT）和II型耐高温聚乙烯（PE-RT）， 拟用于建筑物内的热水和冷水输送装置，无论 根据法律规定，水是否用于人类消费（家用系统）和供暖系统 根据ISO 22391-1，适用于应用类别的设计压力和温度。包含以下内容:BS EN ISO 22391-2:2009

This part of ISO 22391 specifies the characteristics of pipe made of — polyethylene of raised temperature resistance (PE-RT), Type I, and— polyethylene of raised temperature resistance (PE-RT), Type II, intended to be used for hot and cold water installations within buildings for the conveyance of water, whether or not the water is intended for human consumption (domestic systems) and for heating systems, under the design pressures and temperatures appropriate to the class of application according to ISO 22391-1.Incorporates the following:BS EN ISO 22391-2:2009