Home / Standards / GB 5124.4-85 GB 5124.4-85 Methods for chemical analysis of hardmetals — Determination of titanium content — Photometric method using peroxide 硬质合金化学分析方法过氧化物光度测定钛量 Standard Type GB ICS N/A CCS N/A Status N/A Issue Date N/A Implementation N/A Responsible Dept N/A Drafting Unit N/A