GB/T 4257-2004 in English
VALIDCore drills - Technical requirements
- Issued on:2004-02-10
- Implemented on:2004-08-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$88.00
| Standard No: | GB/T 4257-2004 |
| Document status: | VALID |
| Title in English: | Core drills - Technical requirements |
| Title in Chinese: | 扩孔钻 技术条件 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 1~3 business days |
| Issued on: | 2004-02-10 |
| Implemented on: | 2004-08-01 |
| Superseding: |
GB/T 4257-1984 Core drills--Technical requirements
|
| ICS Classification: | 25.100.30-Drills, countersinks, reamers |
| Chinese Classification: | J41-Cutting tools |
| Professional Classification: | GB-National Standard |
| Related Keywords: | technical requirements scopethis standard
basic requirements morse taper shank reamers straight shank reamers requirements |
| Related Topics: | gb/t+4257
GB/T 4257-2004 is 4257 sn/t 4257 GB/T+4257-2004 gb/t4257 GB/T 4257 qb/t 4257 gb+4257 GBT4257 GB/T 4257-1984 GB/T 4257-2004 Drill bottom hole Borehole Logging Technology Drainage drilling and sealing technology Hole expansion experiment |
《GB/T 4257-2004扩孔钻 技术条件》由TC91（全国刀具标准化技术委员会）归口，主管部门为中国机械工业联合会。
本标准规定了直柄扩孔钻、莫氏锥柄扩孔钻和套式扩孔钻的位置公差、材料和硬度、外观和表面粗糙度、标志和包装的基本要求。本标准适用于按GB／T4256、GB／T1142生产的扩孔钻。
Scope
This standard specifies the basic requirements for position tolerance, material and hardness, appearance and surface roughness, marking and packaging of straight shank reamers, Morse taper shank reamers and sleeve reamers. This standard applies to reaming drills produced according to GB/T 4256 and GB/T 1142.
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