ISO 9180 : 1988(R2015)现行
BLACK LEADS FOR WOOD-CASED PENCILS - CLASSIFICATION AND DIAMETERS
出版：International Organization for Standardization
专家解读视频
This International Standard specifies a classification and diameters for black leads used for wood-cased pencils.
NFE 04 709 : 1987 - Identical
DIN ISO 9180 : 1989 - Identical
BIS IS/ISO 9180 : 1988(R2010) - Identical
SANS 9180 : 1ED 2009 - Identical
NF ISO 9180 : 1989 - Identical
UNI ISO 9180 : 1995 - Identical
NEN ISO 9180 : 1990 - Identical
UNI ISO 9180 : 1995 - Identical
SANS 9180 : 1ED 2009 - Identical
NEN ISO 9180 : 1990 - Identical
DIN ISO 9180 : 1989 - Identical
NFE 04 709 : 1987 - Identical
BIS IS/ISO 9180 : 1988(R2010) - Identical
NF ISO 9180 : 1989 - Identical
