Home / Standards / GB/T 5650-2008 GB/T 5650-2008 Active Hollow bolt for flared tube fittings 扩口式管接头用空心螺栓 Standard Type GBT ICS 21.060.60 CCS J15 Status 现行 Issue Date 2022-12-28 Implementation 2008-11-01 Responsible Dept N/A Drafting Unit N/A