The resistance of negative pressure ventilation ducts with coated fabric for coal mines does not exceed 800 mm, and one section of the 800 mm duct is spliced.

Due to fluctuations in raw material prices, the specifications and prices may vary. For specific quotations, please contact our sales staff. Thank you.

What are the standard parameters and installation specifications for mining ventilation ducts? The main parameters of mining negative pressure ventilation ducts include specifications and dimensions, ventilation performance, coated fabric properties, etc. The resistance of coated fabric positive and negative pressure mining ventilation ducts for tunnels accompanies achievement. Mining ventilation ducts come in diameters of 500mm, 600mm, 800mm, 1000mm, and can also be custom-processed according to customer requirements. Common colors are black, sky blue, and orange. We pay attention to every detail of each product, trust me, you won’t regret it. Buying means earning!

Uses of coal mine positive and negative pressure ventilation ducts:

Used for exhaust-type directional ventilation in coal mines, tunnels, subway projects, ships, and underground local areas;

The specifications and dimensions of mining negative pressure ventilation ducts are as follows:

Inner diameter: 300mm, 400mm, 500mm, 600mm, 800mm, 1000mm

Length: 5 meters, 10 meters, 20 meters, can be customized according to customer requirements

Ventilation performance

The hundred-meter wind resistance and air leakage rate for ducts of different diameters are as follows:

300mm diameter: hundred-meter wind resistance ≤1728.0 N·s²/m, air leakage rate ≤5.0%

400mm diameter: hundred-meter wind resistance ≤134.0 N·s²/m, air leakage rate ≤4.0%

500mm diameter: hundred-meter wind resistance ≤134.0 N·s²/m, air leakage rate ≤3.5%

600mm diameter: hundred-meter wind resistance ≤54.0 N·s²/m, air leakage rate ≤3.0%

800mm diameter: hundred-meter wind resistance ≤13.0 N·s²/m, air leakage rate ≤2.5%

1000mm diameter: hundred-meter wind resistance ≤4.0 N·s²/m, air leakage rate ≤2.0%

Warp and weft breaking strength, can withstand 8000Pa wind pressure, meeting the requirements for high-wind air delivery. Mining ventilation ducts are divided into positive pressure ducts and negative pressure ducts.

Isn’t this analysis clear? Positive pressure ducts are 10M per section with no skeleton in the middle; negative pressure ducts are composed of countless steel rings, also commonly known as skeleton ducts. Positive pressure ducts blow air outward, while negative pressure ducts suck air inward. This type of duct can withstand a certain level of negative pressure, can be used for exhaust ventilation, and has retractable characteristics, making it more convenient to use than iron ducts. Choose us for mining positive pressure ducts, we prove our worth with strength, not exaggeration! New and old customers are welcome to cooperate with us, we will not let you down!

Contact: Manager Hu  Contact Information: 16653525598