ISO 17484-1:20 14规定了基于用于建筑物内气体供应的管道、配件及其接头的多层管道系统的一般要求和性能要求。 ISO 17484-1:20 14也涵盖了由一个应力设计层、粘合剂和阻挡层组成的PE-X和PE管道。 ISO 17484-1:20 14为由基于热塑性塑料的多层管道组成的管道系统的设计提供了指南，其中至少60%的壁厚是聚合物材料。根据ISO 17484-1:20 14附录A，用于应力设计层和所有内层的聚合物材料要求为聚乙烯（PE）和/或交联聚乙烯（PE-X）。 ISO 17484-1:20 14适用于在以下温度下运行的系统？20°C至+60°C。出于ISO 17484-1:20 14的目的，交联聚乙烯(PE-X)和粘合剂层被认为是热塑性材料。 对于大于63 mm的尺寸，还必须满足ISO 18225的要求。 ISO 17484-1:20 14适用于建筑物中用于供应最大工作压力不超过500 kPa（5 bar）的气体的管道系统。 ISO 17484-1:20 14适用于以下燃料: D类气体燃料:天然气； E类气体燃料:液化石油气蒸汽、天然气或液化石油气蒸汽。

ISO 17484-1:2014 specifies the general requirements and the performance requirements for multilayer pipe systems based on pipes, fittings and their joints intended to be used for gas supply within buildings. PE-X and PE pipes composed of one stress-designed layer, adhesive and a barrier layer are also covered by ISO 17484-1:2014. ISO 17484-1:2014 gives guidance for the design of piping systems consisting of multilayer pipes based on thermoplastics, for which at least 60 % of the wall thickness is polymeric material. Polymeric materials intended for stress-designed layers and all inner layers are required to be polyethylene (PE) and/or crosslinked polyethylene (PE-X) in accordance with Annex A of ISO 17484-1:2014. ISO 17484-1:2014 applies to systems that operate at temperatures of？20 °C up to +60 °C. For the purpose of ISO 17484-1:2014, crosslinked polyethylene (PE-X) and adhesive layers are considered as thermoplastic materials. For sizes greater than 63 mm the requirements of ISO 18225 have to be fulfilled in addition. ISO 17484-1:2014 is applicable for piping systems used in buildings to supply gas with a maximum operating pressure up to and including 500 kPa (5 bar). ISO 17484-1:2014 applies to the following fuels:

• Category D gaseous fuel: natural gas;
• Category E gaseous fuel: LPG vapour, and natural gas or LPG vapour.