Home / Standards / GB/T 6403.5-1986 GB/T 6403.5-1986 Abolished Relief grooves for grinding wheels 砂轮越程槽 Standard Type GBT ICS 25-010 CCS J05 Status 废止 Issue Date 1986-05-19 Implementation 1987-04-01 Responsible Dept 国家标准委 Drafting Unit N/A