ISO 4642-2:2015规定了消防车和拖车泵用半刚性卷盘软管的要求和试验方法。对于正常压力软管（I类），软管的最大工作压力为1.5 MPa；对于高压软管（II类），软管的最大工作压力为4.0 MPa。软管进一步细分为类型和类别（见第4条）。 ISO 4642-2:2015适用于最低环境温度为？20°C的消防用输送软管。 符合ISO 4642本部分的软管拟与符合相关国家标准的消防软管接头一起使用。 对于软管制造商安装的软管组件（见6.12），也给出了要求。 注1:制造商和买方可通过协议提供温度低于？20°C的软管。 注2:所有压力均以兆帕表示，其中1兆帕=10巴。

ISO 4642-2:2015 specifies the requirements and test methods for semi-rigid reel hoses for use on fire-fighting vehicles and trailer pumps. The hoses are intended for use at a maximum working pressure of 1,5 MPa for normal pressure hoses (category I) and 4,0 MPa for high pressure hoses (category II). The hoses are further subdivided into types and classes (see Clause 4). ISO 4642-2:2015 applies to delivery hoses for fire-fighting purposes intended for use at a minimum ambient temperature of？20 °C. Hoses conforming to this part of ISO 4642 are intended to be used with fire hose couplings conforming to the relevant national standards couplings. Requirements are also given for hose assemblies (see 6.12) where these are fitted by the hose manufacturer. NOTE 1 Hoses for use at temperatures lower than？20 °C can be supplied by agreement between the manufacturer and purchaser. NOTE 2 All pressures are expressed in megapascals where 1 MPa = 10 bar.