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| International Standard Category: Other mining equipment |
MT 669-1997 Technical condition of fire-resistant steel-cable conveyor-belt in coal mining
煤矿用阻燃钢丝绳牵引输送带技术条件 ;
| Category No.: | 73.100.99 | Valid Status: | valid |
| Issued Organization: | Ministry of Coal Industry | Issued Date: | 1997-11-10 |
| Implemented Date: | 1998-4-1 | Abolished Date: | |
| Superseded Standard.: | 强制性推荐性标准 |
Superseded Date: |
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