Home / Standards / GB/T 7729-1987 GB/T 7729-1987 Abolished Chemical analysis of metallurgical products--General rule for spectrophotometric methods 冶金产品化学分析 分光光度法通则 Standard Type GBT ICS N/A CCS H10 Status Abolished Issue Date 1987-05-12 Implementation 1988-03-01 Centralized Committee 中国钢铁工业协会 Issuing Authority 中国钢铁工业协会