ISO 4437-2:2024 燃气用塑料管道系统 聚乙烯（PE） 第2部分：管子

标准编号：ISO 4437-2:2024

中文名称：燃气用塑料管道系统 聚乙烯（PE） 第2部分：管子

英文名称：Plastics piping systems for the supply of gaseous fuels — Polyethylene (PE) — Part 2: Pipes

发布日期：2024-02

标准范围

本文件规定了气体燃料供应领域管道系统用聚乙烯（PE）制成的管道的特性。它还规定了本文档中提到的测试方法的测试参数。与ISO 4437-1、ISO 4437-3、ISO 4437-4和ISO 4437-5一起，本文件适用于PE管道、配件和阀门、它们的接头以及具有PE和其他材料部件的接头，用于以下条件:a)出于设计目的，在20℃的参考温度下，最大工作压力(MOP)高达并包括10巴[1]；b)工作温度在？20℃和40℃。对于20°C至40°C之间的工作温度，ISO 4437-5中定义了降额系数。ISO 4437系列涵盖了一系列拖把，并给出了有关颜色的要求。本文件适用于三类管道:-PE管(外径，dn)，包括任何标识条；-如附录A中所规定的在管的外部和/或内部之一或两者上具有共挤出层的PE管(总外径，dn)，其中所有PE层具有相同的MRS等级；-PE管（外径，dn），在管外侧有可剥离且连续的热塑性塑料附加层（“涂层管”），如附录B所规定。买方或指定方有责任从这些方面做出适当的选择，同时考虑其特殊要求以及任何相关的国家法规和安装惯例或规范。[1]1巴=0.1 MPa=105巴；1MPa=1N/mm2。

This document specifies the characteristics of pipes made from polyethylene (PE) for piping systems in the field of the supply of gaseous fuels.

It also specifies the test parameters for the test methods referred to in this document.

In conjunction with ISO 4437-1, ISO 4437-3, ISO 4437-4 and ISO 4437-5, this document is applicable to PE pipes, fittings and valves, their joints, and joints with components of PE and other materials intended to be used under the following conditions:

a)       a maximum operating pressure (MOP), up to and including 10 bar[1], at a reference temperature of 20 °C for design purposes;

b)       an operating temperature between？20 °C and 40 °C.

For operating temperatures between 20 °C and 40 °C, derating coefficients are defined in ISO 4437-5.

The ISO 4437 series covers a range of MOPs and gives requirements concerning colours.

This document is applicable to three types of pipes:

—     PE pipes (outside diameter, d_n) including any identification stripes;

—     PE pipes with co-extruded layers on either or both the outside and/or inside of the pipe (total outside diameter, d_n) as specified in Annex A, where all PE layers have the same MRS rating;

—     PE pipes (outside diameter, d_n) with a peelable and contiguous thermoplastics additional layer on the outside of the pipe ("coated pipe") as specified in Annex B.

It is the responsibility of the purchaser or specifier to make the appropriate selections from these aspects, taking into account their particular requirements and any relevant national regulations and installation practices or codes.

标准预览图