GB/T 39011.3-2020 in English
VALIDMechanical pencils for technical drawings—Part 3:Black leads—Bending strengths of HB leads
- Issued on:2020-07-21
- Implemented on:2020-07-21
- File Format:PDF
- Delivery:Via email within 1~3 business days
Price(USD)：
$100.00
$97.00
$97.00
| Standard No: | GB/T 39011.3-2020 |
| Document status: | VALID |
| Title in English: | Mechanical pencils for technical drawings—Part 3:Black leads—Bending strengths of HB leads |
| Title in Chinese: | 技术制图活动铅笔 第3部分：黑铅芯 HB铅芯弯曲强度 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 1~3 business days |
| Issued on: | 2020-07-21 |
| Implemented on: | 2020-07-21 |
| ICS Classification: | 97.180-Miscellaneous domestic and commercial equipment |
| Professional Classification: | GB-National Standard |
| Related Keywords: | technical drawing pencils
black lead cores technical drawings precise technical drawings bending strengths |
| Related Topics: | Lead Standards for Roll Cores
Lead Strength Tester Lead Strength Tester lead strength uncertainty pencil GB/T 39011.3 GB/T 39011.3-2020 Core hardness Lead standard curve Lead industry |
Introduction
This standard specifies the requirements for black lead cores used in technical drawing pencils, particularly focusing on the bending strength of HB grade lead cores. It provides detailed guidelines and test methods to ensure that these lead cores meet specific quality standards necessary for precise technical drawings.
*** Please note: This description may not be accurate, please refer to the official documentation.
Sample only — not a preview of GB/T 39011.3-2020
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