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Active standard | Published: 01/09/2020
ČSN EN ISO 21904-4
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
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Detail information
Designation: ČSN EN ISO 21904-4
Publication date: 01/09/2020
Pages: 24
Country: Czech technical standard
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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
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