Home / Standards / GB/T 6394-2002 GB/T 6394-2002 Abolished Metal-methids for estimating the average grain size 金属平均晶粒度测定法 Standard Type GBT ICS 77.040.30 CCS H24 Status 废止 Issue Date 2002-12-31 Implementation 2003-06-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A