MT 644-1997
Active
MT 646-1997
Abolished
Industry standards-Coal
MT 646-1997 Frictional metal prop
MT 646-1997 Frictional metal prop
Basic Information
Standard Code:
MT 646-1997
Standard Type:
Industry standards
Standard Status:
Abolished
is_force_gb:
no
CCS Name:
Mine support equipment
ICS Name:
Other mining equipment
Publish Date:
1997-11-10
Implement Date:
1998-04-01
Pages:
9 pages
Development Information
Replace the following standards
MT 5-1974
MT 70-1983
Related Standards
MT 668-1997
Replaced
MT 668-1997 Technical Conditions for Flame-Retardant Steel-Mesh-Core Conveying Belt for Coal Mines
MT 669-1997
Active
MT 669-1997 Technical condition of fire-resistant steel-cable conveyor-belt in coal mining
MT/T 154.7-1997
Active
MT/T 154.7-1997 Model designation of separating equipment for coal
MT/T 660-1997
Active
MT/T 660-1997 Dimension series of vibrating screen for coal
MT/T 661-1997
Replaced