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在机械工程液压装置的管路连接中,过去采用的管接头品种繁杂,结构陈旧,体积大,不便于加工和装拆,泄漏和损坏现象时常发生,不能适应生产发展的要求。国外在十几年前已研制出卡套式管接头,并定为国家标准在机械行业使用。国内一些行业的科研单位和工厂最近几年也在试制使用这种管接头,取得了可喜的成果。在1976年一机部仪器仪表及自动化展览会上展出了上海标准件八厂和四川泸州液压配件厂的单卡套式管
In the pipeline connection of mechanical engineering hydraulic device, the pipe fittings used in the past are many and complicated, the structure is obsolete, the volume is large, inconvenient for processing and assembling and disassembling, the leakage and damage phenomena often occur and can not meet the requirements of production and development. More than a decade ago, foreign countries have developed card-type pipe fittings, and set as a national standard in the machinery industry. Some domestic industry research institutes and factories in recent years, trial production of such fittings, made gratifying achievements. In 1976 a machine at the instrumentation and automation exhibition on display at Shanghai Standard Parts Factory 8 and Sichuan Luzhou Hydraulic Parts Factory single-card sets of tube