當(dāng)前位置：
首頁(yè) >
標(biāo)準(zhǔn)詳情頁(yè)
ISO 21904-4:2020現(xiàn)行
Health and safety in welding and allied processes — Equipment for capture and separation of welding fume — Part 4: Determination of the minimum air volume flow rate of capture devices
出版：International Organization for Standardization
專(zhuān)家解讀視頻
基本信息
標(biāo)準(zhǔn)編號(hào)： ISO 21904-4:2020
出版單位：International Organization for Standardization
標(biāo)準(zhǔn)頁(yè)數(shù)：10
標(biāo)準(zhǔn)簡(jiǎn)介
This document specifies two methods for establishing the minimum air volume flow rate. One method is dedicated for use with captor hoods, nozzles and slot nozzles with a ratio of slot length to hose diameter of 8:1 or less. The other method is dedicated for use with on-gun extraction devices. These methods are not applicable to down draught tables.
