润滑油、工业用油及相关产品（L 级） — H 系列（液压系统） — HETG、HEPG、HEES 和 HEPR 类液压油规范

[中文适用范围]： 本文件规定了环保液压油的要求，适用于液压系统，特别是液压油动力系统。本文件的目的是为环保液压油的供应商和用户提供指导和要求，并为液压系统的原始设备制造商提供指导。本文件规定了交付时环保液压油的要求。液压应用中使用的流体分类在 ISO 6743-4 中定义。本文件涵盖 ISO 6743-4 涵盖的四类环保流体，即 HETG（甘油三酯）、HEPG（聚乙二醇）、HEES（合成酯）和 HEPR（聚α烯烃和其他合成碳氢化合物）。 [外文原描述]： This document specifies the requirements for environmentally acceptable hydraulic fluids and is intended for hydraulic systems, particularly hydraulic fluid power systems. The purpose of this document is to provide guidance and requirements for suppliers and users of environmentally acceptable hydraulic fluids, and for the direction of original equipment manufacturers of hydraulic systems. This document stipulates the requirements for environmentally acceptable hydraulic fluids at the time of delivery. Classification of fluids used in hydraulic application is defined in ISO 6743 - 4 . This document encompasses the four categories of environmentally acceptable fluids covered by ISO 6743 - 4 , namely HETG (triglycerides), HEPG (polyglycols), HEES (synthetic esters) and HEPR (polyalphaolefins and other synthetic hydrocarbons).