| Place of Origin |
Jiangsu China (Mainland) |
| Brand Name |
HEDING |
| Model Number |
HEDING |
| Type |
Ventilation |
Positive voltage air duct Purpose: Fan machine could used it in coal mines, tunnel, underground for positive pressure ventilation Air duct structure and dimension; 1-end ring 2-swinging ring installation line. 3-fling ring 4-reverseItemDimensionTolerance(mm)Diameter of air duct(mm)300 400 450 500 600 800 10000 ±6Length of air duct(mm)510200 ±100