济南莱芜辛庄镇经销壳牌液压油-空压机油液压油用途广泛，是工业用油中使用最多的产品。当前液压元件正向着体积小、功率大方向发展，系统压力越来越高，有的已突破50MPa。为此，普通型的L-HL系列已经趋于淘汰，抗磨型L-HM系列应用更多。低温性能也是液压油的重要特性，要求在低温环境下设备启动比较容易，且动力传动灵敏，而且液压油换油周期较长，如露天设备通常一年一换，液压油在使用过程中不可避免地要经历四季的变化，因此露天设备使用低凝产品效果较好。清洁度也已成为液压油的性能要求，一般产品要NAS颗粒度等级不大于9级，清洁型产品不大于7级，高清洁型产品不大于5级，但盲目追求NAS等级不但没有任何效果，反而降低质量，增加成本。例如有些机械生产厂家，或工程机械用户没有用于添加液压油的无尘车间，即使花了大价钱购买了NAS 5级别的产品，在打开产品的瞬间，高清洁型NAS 5 液压油就变成了NAS 8的等级了，而且液压油NAS等级高意味着过滤次数多，过滤过程中就会把昂贵的添加剂成分过滤掉，因此从专业的角度来讲，NAS等级不必过于追求。Hydraulic oil is widely used, is the most widely used industrial oil products. At present, the hydraulic components are developing in the direction of small volume and large power, and the system pressure is getting higher and higher, some have broken through 50MPA. To this end, the general L-HL series has tended to eliminate, wear-resistant L-HM series more applications. Low-temperature performance is also an important characteristic of hydraulic oil, which requires that the equipment is easy to start in low-temperature environment, and the power transmission is sensitive, and the hydraulic oil change cycle is longer, such as open-air equipment is usually changed once a year,