标准摘要
[中文适用范围]： ISO 4642 的这一部分规定了用于消防车和拖车泵的半刚性卷盘软管的要求和测试方法。 这些软管的最大工作压力为常压软管（I 类）1.5 MPa，高压软管（II 类）最大工作压力 4.0 MPa。 软管进一步细分为类型和类别（参见第 4 条）。 ISO 4642 的本部分适用于用于消防目的的输送软管，旨在在最低环境温度为 -20 °C 下使用。 符合 ISO 4642 本部分的软管应与符合相关国家标准接头的消防水带接头一起使用。 对于由软管制造商安装的软管组件（见 6.12）也给出了要求。 注 1：经制造商和买方协议，可提供用于温度低于 -20°C 的软管。 注 2：所有压力均以兆帕表示，其中 1 MPa = 10 bar。 [外文原描述]： 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.
英文名称Rubber and plastics hoses, non-collapsible, for fire-fighting service — Part 2: Semi-rigid hoses (and hose assemblies) for pumps and vehicles