Home / Standards / GB 5292.1-85 GB 5292.1-85 Chemical analysis method for melted welding fluxes — Determination of silicon dioxide content by gravimetric method 熔炼焊剂化学分析方法 重量法测定二氧化硅量 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