Home / Standards / GB/T 21013-2007 GB/T 21013-2007 Abolished Machine tools - Mounting of plain grinding wheels by means of hub flanges 机床 紧固平砂轮用砂轮卡盘 Standard Type GBT ICS 25.080.50 CCS J55 Status 废止 Issue Date 2007-07-26 Implementation 2007-12-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A