本文件规定了工厂制造的带塑料服务管且管道组件各层之间无粘接的埋地柔性区域供暖管道系统的要求和测试方法。 它仅适用于第1部分。 本文件适用于管道、配件及其接头，以及与拟用于区域供暖装置的非塑料材料制成的部件的接头。 本文件适用于95°C的最大工作温度和高达1.0 MPa的最大工作设计压力，设计使用寿命至少为30年。 本文件不适用于监控系统。 注:对于更高的温度或其他液体的运输，例如饮用水，需要额外的要求和测试。本文件未规定此类要求。

This document specifies requirements and test methods for flexible, factory made, buried district heating pipe systems with plastic service pipes and no bonding between the layers of the pipe assemblies. It is only applicable in conjunction with part 1. This document is applicable to pipes, fittings, their joints and to joints with components made of non-plastics materials intended to be used for district heating installations. This document is applicable to a maximum operating temperature of 95 °C and maximum operating design pressure up to 1,0 MPa for a design service life of at least 30 years. This document does not apply to cover surveillance systems. NOTE For higher temperatures or for the transport of other fluids, for example potable water, additional requirements and testing is needed. Such requirements are not specified in this document.