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液压管道连接件泄漏是液压系统外泄漏的主要部分,这对液压系统的正常工作和产品质量有极大的影响.新近铁道部第一工程局一处机械总公司生产的一种工程机械选用了几种经
Leakage of hydraulic pipe fittings is the main part of the leakage of hydraulic system, which has a great impact on the normal work of hydraulic system and product quality.New construction of a construction machinery at a machinery company recently selected by the First Engineering Bureau of the Ministry of Railways Several kinds