I.S. EN 60974-4:2011被替代
Arc Welding Equipment Part 4: Periodic Inspection and Testing
出版：National Standards Authority of Ireland
专家解读视频
Describes test procedures for periodic inspection and, after repair, to ensure electrical safety.
NBN EN 60974-4:2007 - Identical
NF EN 60974-4:2011 - Identical
NBN EN 60974-4:2011 - Identical
BS EN 60974-4:2011 - Identical
EN 60974-4:2016 - Identical
UNE EN 60974-4:2011 - Identical
SS EN 60974-4 Ed. 2 (2011) - Identical
