GB/T 15335-1994
Replaced
MT/T 421-2025
Active
Industry standards-Coal
MT/T 421-2025 Testing method of the performance parameters in situ for the main fan used in coal mine
MT/T 421-2025 Testing method of the performance parameters in situ for the main fan used in coal mine
Price:
$ 43.00
Basic Information
Standard Code:
MT/T 421-2025
Standard Type:
Industry standards
Standard Status:
Active
is_force_gb:
no
CCS Name:
Special equipment and supplies for coal mines
ICS Name:
Ventilation, air conditioning, and lighting equipment
Publish Date:
2025-06-30
Implement Date:
2025-12-30
Pages:
24 pages
Scope
This document specifies the conditions for determining the operating parameters of main ventilators used in coal mines, the measurement instruments, the determination of performance parameters, and the plotting of ventilator performance curves.
This document is applicable to the determination of the performance parameters of main ventilators (hereinafter referred to as ventilators) installed at coal mine sites.
Development Information
Replace the following standards
Referenced Standards
Related Standards
MT 754-1997
Replaced
MT 754-1997 Technical specification for extractable axial-flow fan used for the ground of small mine
MT 242-1998
Replaced
MT 242-1998 Model KJ miners'cap lamps
MT 26-1998
Replaced
MT 26-1998 Model KS miners' cap lamps
GB/T 20105-2006
Active
GB/T 20105-2006 Coated fabrics for air duct
GB/T 21151-2007
Replaced