本文件规定了汽车动力转向系统中使用的五种软管和软管总成的要求，这五种软管和软管总成的压力额定值和体积膨胀不同。它们适用于温度范围为-40°C至+135°C的流体。 本文档基于性能测试。为了考虑技术发展，不包括对具体材料、详细施工或制造方法的要求。

This document specifies requirements for five types of hose and hose assembly used in automobile power-steering systems, the five types differing in their pressure ratings and volumetric expansion. They are for use with fluids in the temperature range？40 °C to +135 °C. This document is based on performance tests. In order to take account of technological developments, no requirements are included for specific materials, detailed construction or manufacturing methods.