 |
Chinese Classification
Professional Classification
ICS Classification
Latest
Value-added Services
|
| Chinese National Standard Category: Cutting tools |
| English Title: | Subland twist drills with taper shanks for holes prior to tapping screw threads |
| Chinese Title: | 攻丝前钻孔用锥柄阶梯麻花钻 |
| Standard No.: | GB 6139-1985 |
| Category No.: | J41 |
| Issued by: | |
| Issued on: | |
| Implemented on: | 1986-3-1 |
| Status: | valid |
| Superseded by: | GB/T 6138.2-1997 Subland twist drills for holes prior to tapping screw threads. Part 1: The types and dimensions for subland twist drills with Morse shanks GB/T 6139-1997 Subland twist drills-Technical specifications |
| Superseded on: | |
| Abolished on: | |
| Superseding: | |
| Word Count: | 2000 words |
| Similar Standards: | GB/T 16770.1-2025 GB/T 20331-2025 GB/T 10944.3-2025 GB/T 6120-2025 GB/Z 29014.3-2024 GB/Z 29014.5-2024 GB/Z 29014.2-2024 GB/Z 29014.1-2024 GB/Z 29014.4-2024 GB/Z 29014.100-2024 GB/T 6138-2023 GB/T 21952-2023 GB/T 21951-2023 GB/T 20328-2023 GB/T 1127-2023 GB/T 43076-2023 GB/T 20333-2023 GB/T 1115-2022 GB/T 4256-2022 GB/T 20326-2021 |
| Tel: +86-10-8572 5655 | Fax: +86-10-8581 9515 | Email: coc@codeofchina.com | QQ: 672269886 |
| Copyright: Beijing COC Tech Co., Ltd. 2008-2020 |