ISO 9177-2 : 1989(R2015)现行
MECHANICAL PENCILS - PART 2: BLACK LEADS - CLASSIFICATION AND DIMENSIONS
出版：International Organization for Standardization
专家解读视频
This part of ISO 9177 specifies a classification and dimensions for black leads used for mechanical pencils.
SS-ISO 9177-2:1996 - Identical
SANS 9177-2 : 1989 AMD 2 2007 - Identical
UNI ISO 9177-2 : 1991 - Identical
DIN ISO 9177-2 : 1990 - Identical
BIS IS/ISO 9177-2 : 1989(R2011) - Identical
UNE 1164-2 : 1996 - Identical
NF ISO 9177-2 : 1990 - Identical
UNE 1164-2 : 1996 - Identical
SANS 9177-2 : 1989 AMD 2 2007 - Identical
SS-ISO 9177-2:1996 - Identical
UNI ISO 9177-2 : 1991 - Identical
DIN ISO 9177-2 : 1990 - Identical
NEN ISO 9177-2 : 1990 - Identical
NF ISO 9177-2 : 1990 - Identical
BIS IS/ISO 9177-2 : 1989(R2011) - Identical
