NS EN 303-4 Ed. 1 (1999)现行
Heating Boilers - Part 4: Heating Boilers With Forced Draught Burners - Special Requirements With Forced Draught Oil Burners With Outputs Up To 70kw And Maximum Operating Pressure Of 3 Bar - Terminology, Special Requirements, Testing And Marking
出版：Norwegian Standards (Norges Standardiseringsforbund)
专家解读视频
Applies to heating boilers with forced draught oil burners up to a nominal heat output of 70 kW, which are operated either with negative pressure (natural draught boiler) or with positive pressure (pressurized boiler) in the combustion chamber, according to the boiler manufacturer's instructions. Defines the necessary terminology, requirements and testing of the materials and marking requirements of heating boilers.
UNE EN 303-4:1999 - Identical
I.S. EN 303-4:1999 - Identical
NBN EN 303-4:1999 - Identical
NF EN 303-4:1999 - Identical
ONORM EN 303-4:1999 - Identical
UNI EN 303-4:2003 - Identical
DIN EN 303-4 (1999-03) - Identical
NEN EN 303-4:1999 - Identical
BS EN 303-4:1999 - Identical
SN EN 303-4:1999 - Identical
SS EN 303-4 Ed. 1 (1999) - Identical
