Home / Standards / GB/T 6403.5-2008 GB/T 6403.5-2008 Active Relief grooves for grinding wheels 砂轮越程槽 Standard Type GBT ICS 25.010 CCS J05 Status 现行 Issue Date 2008-09-27 Implementation 2009-05-01 Responsible Dept 国家标准委 Drafting Unit 国家标准委