论文部分内容阅读
▲1980年12月31日国家标准总局国标发[1980]413号文,批准全国液压气动标准化技术委员会[80]液标委字第015号文报批的“液压气动系统及元件公称压力系列参数”等八个国家标准草案为国家标准。编号、名称如下: GB 2346—80 液压气动系统及元件公称压力系列参数 GB 2347—80 液压泵及马达公称排量系列参数 GB 2348—80 液压缸气缸内径及活塞杆外径尺寸系列 GB 2349—80 液压缸活塞行程参数系列 GB 2350—80 液压缸气缸活塞杆螺纹型式和尺寸系列 GB 2351—80 液压气动用软管公称内径尺寸系列 GB 2352—80 隔离式蓄能器公称压力和容量系列参数 GB 2353—80 液压泵及马达安装连接尺寸(1) ▲国家标准总局于1981年3月3日国标发[1981]064号文批准石油部(81)油科研字第005号文报批的“液压油类产品的分组、命名和代号”国家标准草案为国家标准,编号和名称:
▲ December 31, 1980 State Standard General Administration of China issued GB No. [1980] No. 413, approved the National Hydraulic Pneumatic Standardization Technical Committee [80] Liquid Standard Committee Document No. 015 approved “hydraulic pneumatic system and components of nominal pressure series of parameters” Eight national standards such as draft national standards. Number, the name is as follows: GB 2346-80 hydraulic system and components nominal pressure series parameters GB 2347-80 hydraulic pump and motor nominal displacement series parameters GB 2348-80 cylinder cylinder bore and piston rod diameter size series GB 2349-80 Cylinder Piston stroke parameters Series GB 2350-80 Cylinder Piston rod thread type and size series GB 2351-80 Hydraulic Pneumatic Hose Nominal diameter size series GB 2352-80 Isolated Accumulator Nominal pressure and capacity Series parameters GB 2353 -80 Hydraulic Pump and Motor Installation Connection Dimensions (1) ▲ State Administration of Standards and Industry Approved by the State Administration of Standards and Industry [1981] No. 064 on March 3, 1981 Approved by the Ministry of Oil (81) Oil Research Word No. 005 “Hydraulic Oil Product grouping, naming and code ”national standard draft national standards, number and name: