专家解读视频
The second edition of ISO 3690 specifies the sampling and analytical procedure for the determination of diffusible and residual hydrogen in ferritic weld metal arising from the welding of ferritic steel using arc welding processes with filler metal. Also provided that the weld specimen size is maintained within limits dictated by the size of the test block, variations in welding parameters are permissible in order to investigate the effect of such variables on the weld hydrogen content.
NEN EN ISO 3690:2001 - Identical
ISO 3690:2000 - Identical
UNE EN ISO 3690:2001 - Identical
SS EN ISO 3690 Ed. 1 (2001) - Identical
NS EN ISO 3690 Ed. 1 (2001) - Identical
I.S. EN ISO 3690:2001 - Identical
UNI EN ISO 3690:2003 - Identical
NF EN ISO 3690:2001 - Identical
ONORM EN ISO 3690:2001 - Identical
DIN EN ISO 3690 (2001-03) - Identical
BS EN ISO 3690:2001 - Identical
SN EN ISO 3690:2001 - Identical
NEN EN ISO 3690:2012 - Identical
SS EN ISO 3690 Ed. 2 (2012) - Identical
