润滑油、工业用油及相关产品（L 级） — H 系列（液压系统） — HH、HL、HM、HV 和 HG 类别规范

[中文适用范围]： 本文件规定了新矿物油液压油的最低要求，适用于液压系统，特别是静液压油动力应用。本文件的目的是指导矿物油液压油的供应商和最终用户，并指导液压系统的设备制造商。本文件以通用形式编写，以便其应用可以适应各种气候条件。本文件还规定了交付时对矿物油液压油的要求。本文件旨在与 ISO 6743-4 结合使用，后者对液压应用中使用的流体进行了分类。在 ISO 6743-4 涵盖的类别中，本文件仅涵盖五种类型的矿物油基流体。这些类别是 HH、HL、HM、HV 和 HG。本文件不涵盖液压回路设计、温度和极端条件方面的极端使用情况。注意：对于在特殊条件下使用，润滑剂的供应商和购买者可以相互商定产品的额外测试方法和可接受性标准。 [外文原描述]： This document specifies the minimum requirements for new mineral oil hydraulic fluids and is intended for hydraulic systems, particularly for hydrostatic hydraulic fluid power application. The purpose of this document is to guide suppliers and end users of mineral oil hydraulic fluids and to direct equipment manufacturers of hydraulic systems. This document is written in a general form so that its application can accommodate various climatic conditions. This document also stipulates the requirements for mineral-oil hydraulic fluids at the time of delivery. This document is intended to be used in conjunction with ISO 6743-4, which classifies fluids used in hydraulic applications. Among the categories covered by ISO 6743-4, only five types of mineral oil-based fluids are covered in this document. These categories are HH, HL, HM, HV and HG. This document does not cover the extreme cases of use in terms of hydraulic circuits design, temperature and extreme conditions. NOTE For use in exceptional conditions, suppliers and purchasers of lubricants can mutually agree upon additional testing methods and acceptability criteria of the products. .