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| International Standard Category: Tunnelling and tubing equipment |
GB/T 5621-1999 Test methods of performance for rock drilling machines and pneumatic tools
凿岩机械与气动工具 性能试验方法 ;
| Category No.: | 73.100.10 | Valid Status: | superseded |
| Issued Organization: | CSBTS | Issued Date: | 1999-06-01 |
| Implemented Date: | 1999-1-1 | Abolished Date: | 2009-02-01 |
| Superseded Standard.: | GB/T 5621-2008 Test methods of performance for rock drilling machines and pneumatic tools |
Superseded Date: | 2009-2-1 |
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