GB 4706.61-2002
Replaced
GB/T 39542.3-2025
Active
National standards
GB/T 39542.3-2025 Mechanical pencils for technical drawings—Part 3:Black leads—Bending strengths of HB leads
GB/T 39542.3-2025 Mechanical pencils for technical drawings—Part 3:Black leads—Bending strengths of HB leads
Basic Information
Standard Code:
GB/T 39542.3-2025
Standard Type:
National standards
Standard Status:
Active
is_force_gb:
no
CCS Name:
Cultural and educational items, sports equipment, and entertainment products
ICS Name:
Other household and commercial equipment
Publish Date:
2025-05-30
Implement Date:
2025-05-30
Pages:
12 pages
Scope
This document specifies the bending strength of black lead cores with a hardness grade of HB for technical drawing pencils and the test method for them.
Development Information
Same series standard
Replace the following standards
Adopt standards
ISO 9177-3:2022
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Replaced
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GB 4706.18-2005
Replaced
GB 4706.18-2005 Household and similar electrical appliances—Safety—Particular requirements for battery chargers
GB 4706.81-2006
Replaced