Home / Standards / GB/T 35979-2018 GB/T 35979-2018 Active Technical specification for selection,installation,use and maintenance of metal bellows expansion joints 金属波纹管膨胀节选用、安装、使用维护技术规范 Standard Type GBT ICS 23.040.70 CCS J15 Status 现行 Issue Date 2018-02-06 Implementation 2018-09-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A