NF EN 1043-1,Destructive test on welds in metallic materials - Hardness testing - Part 1: Hardness test on arc welded joints% u/ a' ^" v, l1 U. v
NF A 05-152,Iron and steel products - Macroscopic examination by strong mineral acid attack d( _4 P p) m. d
NF A 05-150,Steel products - Micrographic examination techniques- M- c" m6 f' y' l
NF A 05-165,Steel products - Manual point counting method for statistically estimating the volume fraction of a constituent with a point grid 4 n/ T/ N1 W& @3 @# d1 F* S4 { % [% v! J' j% M0 s$ d3 ~
请问这几个标准对应的国标是哪几个,谢谢了!!