GB/T 39542.2-2025

Active

Mechanical pencils for technical drawings—Part 2:Black leads—Classification and dimensions

技术制图活动铅笔 第2部分：黑铅芯 分类和尺寸

Standard Type
GBT
ICS
97.180
CCS
Y50
Status
现行
Issue Date
2025-05-30
Implementation
2025-05-30
Responsible Dept
中国轻工业联合会
Drafting Unit
N/A