本文件规定了用于内燃机驱动车辆的挤压热塑性塑料管和软管的试验要求和试验方法，不包括空气制动系统（见ISO？7628）、燃油管路（见ISO？13775-2）和高压液压系统。本文件专门供原始设备制造商（OEM）使用。

This document specifies the test requirements and the test methods for extruded thermoplastic tubing and hoses for use in vehicles powered by internal-combustion engines, excluding use in air braking systems (see ISO？7628), fuel lines (see ISO？13775-2), and high-pressure hydraulic systems. This document is intended especially for use by original equipment manufacturers (OEMs).