各国不锈钢标准
AISI
ASTM
BS970Part4
BSl449part2
DINl7440
DINl7224
NFA35-572
NFA35-576-582
NFA35-584
TOCT5632
S20200
30200S
S30400
S30403
S30500
S3l008
S3l600
S3l603
S32l00
321S20