NF EN 1043-1,Destructive test on welds in metallic materials - Hardness testing - Part 1: Hardness test on arc welded joints % v8 c3 Q* w R- RNF A 05-152,Iron and steel products - Macroscopic examination by strong mineral acid attack # A! m7 o* v' I s' \3 ^: ~NF A 05-150,Steel products - Micrographic examination techniques ( Z3 U: k% d5 c, z# {. t% LNF A 05-165,Steel products - Manual point counting method for statistically estimating the volume fraction of a constituent with a point grid 4 u+ w" A( [6 E4 x , e& ]1 e* Z- |$ W
请问这几个标准对应的国标是哪几个,谢谢了!!