NF E32-201-4*NF ISO 13579-4:2013 Industrial furnaces and associated processing equipment - Method of measuring energy balance and calculating efficiency - Part 4 : furnaces with protective or reactive atmosphere
2013NF E32-201-4*NF ISO 13579-4:2013 Industrial furnaces and associated processing equipment - Method of measuring energy balance and calculating efficiency - Part 4 : furnaces with protective or reactive atmosphere