Home / Standards / GB/T 12617-1990 GB/T 12617-1990 Abolished 120 deg flush head break mandrel blind rivets 开口型沉头抽芯铆钉 Standard Type GBT ICS 21.060.40 CCS J13 Status 废止 Issue Date 1990-12-14 Implementation 1991-10-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A