This part of GB/T 19674 specifies the dimensions and technical requirements of threaded ports for hydraulic pipe joints. Its dimensions are applicable to the column ends in GB/T 19674.2 and GB/T 19674.3. The maximum working pressure applicable to the ports specified in this part is 63MPa. The allowable working pressure should be determined according to the size of the oil port, material, process, working condition, application, etc.
GB/T 19674.1-2005 history
2005GB/T 19674.1-2005 Connections for general use and fluid power Ports and stud ends with thread-Threaded port