Home / Standards / GB/T 6409.2-2009 GB/T 6409.2-2009 Abolished Superabrasives - Diamond or cubic boron nitride grinding tools - Shapes and dimensions 超硬磨料制品 金刚石或立方氮化硼磨具 形状和尺寸 Standard Type GBT ICS 25.100.70 CCS J43 Status 废止 Issue Date 2009-04-23 Implementation 2009-12-01 Responsible Dept 中国机械工业联合会 Drafting Unit 中国机械工业联合会