Home / Standards / GBT 959.1-2017 GBT 959.1-2017 Technical Specification for Retaining Rings — Spring Retaining Rings 挡圈技术条件 弹性挡圈 Standard Type GBT ICS N/A CCS N/A Status N/A Issue Date N/A Implementation N/A Responsible Dept N/A Drafting Unit N/A