BS EN ISO 15012-2:2008
焊接和相關工藝中的衛生和安全.空氣過濾設備的要求、測試和標記.采集罩和噴嘴的最小空氣體積流率的測定
Health and safety in welding and allied processes - Requirements, testing and marking of equipment for air filtration - Determination of the minimum air volume flow rate of captor hoods and nozzles