I.S. EN ISO 11970:2016现行
Specification and Qualification of Welding Procedures for Production Welding of Steel Castings (iso 11970:2016)
出版：National Standards Authority of Ireland
专家解读视频
Specifies the conditions for the execution of welding procedure qualification tests and the limits of validity of a qualified welding procedure for all practical welding operations within the range of essential variables.
SN EN ISO 11970:2016 - Identical
EN ISO 11970:2016 - Identical
NS EN ISO 11970:2016 - Identical
ONORM EN ISO 11970:2016 - Identical
