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Mechanical pencils for technical drawings—Part 3:Black leads—Bending strengths of HB leads
Standard in brief
Scope of Application:
本文件规定了技术制图活动铅笔用硬度等级为HB的黑铅芯弯曲强度和试验方法。
Basic information
Standard No:GB/T 39542.3-2025
Standard Name:技术制图活动铅笔 第3部分:黑铅芯 HB铅芯弯曲强度
English Name:Mechanical pencils for technical drawings—Part 3:Black leads—Bending strengths of HB leads
Standard Status:现行
Release Date:2020-07-21
Effective Date:2025-05-30
Language of Publication:中文简体
Standard Classification
ICS Number:97.180
CCS Number:Y50
Related Standards
Adopted Standards:ISO 9177-3:2022
Adopted Standard Name:《技术制图活动铅笔 第3部分:黑铅芯 HB铅芯弯曲强度》
Adoption Level:IDT
Publication Information
Number of pages:12
Number of words:10 K
Format:大16
Edition:1
Color Pages:0
Electronic Version:Yes
Color Images:No
Print Publication Date:2025-05-01
Standard Revision Information
Has Amendment:No
Other Information
Application Dept:国家市场监督管理总局、国家标准化管理委员会
Standard Type:CN
Standard Attribute:GB
Other Standard Number:39542.3
Drafter:张晓亮、金双喜、龙水云
Drafting Organization:哈尔滨天坛铅芯有限责任公司、尚志市珍珠笔业有限责任公司、佛山市三水永盛华文具有限公司、贝发集团股份有限公司、鹤山市嘉益文具实业有限公司、黑龙江泰比文具有限公司、上海晨光文具股份有限公司、浙江鸿星文具有限公司
Management Organization:全国制笔标准化技术委员会(SAC/TC 378)
Proposing Department:中国轻工业联合会