GB/T 39542.3-2020

Abolished

Mechanical pencils for technical drawings—Part 3: Black leads—Bending strengths of HB leads

技术制图活动铅笔第3部分：黑铅芯 HB铅芯弯曲强度

Standard Type

GBT

ICS

97.180

CCS

Y50

Status

废止

Issue Date

2020-07-21

Implementation

2020-07-21

Responsible Dept

中国轻工业联合会

Drafting Unit

N/A

🔗 Related Standards / 同类标准

GB/Z 42692-2023 Courtyard gazebo GB/T 23147-2008 Umbrella GB/T 23105-2008 Household and similar electrical pump GB/T 23119-2008 Household and similar electrical appliances - Performance - Hard water for testing GB/T 22767-2008 Manual pencil sharpeners GB/T 23127-2008 Electric appliances connected to the water mains - Avoidance of backsiphonage and failure of hose-sets GB/T 26714-2011 Ball point pens and refills GB/T 28205-2011 Aquariums for household and similar application