Home / Standards / GB/T 2481.1-1998 GB/T 2481.1-1998 Abolished Bonded abrasives--Determination and designation of grain size distribution--Part 1:Macrogrits F4 to F220 固结磨具用磨料 粒度组成的检测和标记 第1部分:粗磨粒 F4～F220 Standard Type GBT ICS 25.100.70 CCS J43 Status 废止 Issue Date 1998-11-18 Implementation 1999-09-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A