ISO 4552-2:1987现行
Ferroalloys - Sampling and sample preparation for chemical analysis Part 2: Ferrotitanium, ferromolybdenum, ferrotungsten, ferroniobium, ferrovanadium
出版：International Organization for Standardization
专家解读视频
JIS G 1602:1998 - Identical
PN ISO 4552-2:2005 - Identical
UNI ISO 4552-2:1994 - Identical
NBR NM-ISO 4552-2:2000 - Identical
JIS G 1601:1998 - Equivalent
KS D ISO 4552-2:2003 - Identical
