🌬️ Engineering Positive Pressure Ventilation Duct φ800-10 Product Overview

The φ800-10 Positive Pressure Ventilation Duct (PVC Coated Fabric) is a heavy-duty flexible air duct designed for high-pressure ventilation systems in demanding environments. Manufactured from double-sided PVC-coated high-tenacity polyester base fabric, it delivers superior strength, abrasion resistance, and air-tightness.

With a diameter of 800 mm and standard section length of 10 m, this large-diameter engineering duct is ideal for continuous high-volume air supply in tunnels, mines, metro projects, municipal underground spaces, and shield tunneling operations.

Key benefits include high pressure resistance, anti-tear durability, flame retardancy, anti-static safety, and secure connection options, making it a reliable solution for long-distance fresh air delivery.

🧰 Engineering Positive Pressure Ventilation Duct φ800-10 Key Features & Advantages

✅ PVC Coated Fabric – High-strength polyester base cloth with double-sided PVC coating for enhanced durability and pressure resistance
✅ Large Diameter (φ800mm) – Supports high airflow rates for industrial-scale ventilation
✅ Flame Retardant & Anti-Static – Complies with safety requirements for mining and tunneling
✅ Secure Connections – Available with zipper, flange, or steel ring connectors for excellent sealing
✅ Custom Branding Options – Logo, serial number, and reflective strip printing available
✅ Engineered to Chinese National Standards – Suitable for both domestic and international projects

📐 Engineering Positive Pressure Ventilation Duct φ800-10 Technical Specifications (Standard Configuration)

Parameter	Specification
Model	φ800-10 Positive Pressure Ventilation Duct (PVC Coated Fabric)
Diameter	800 mm
Section Length	10 m (Custom: 5 m, 8 m, etc.)
Material	Double-sided PVC-coated polyester (Base fabric ≥ 2000 N/5 cm)
Thickness	0.5 mm – 0.8 mm (Optional)
Pressure Resistance	≥ 12 kPa
Flame Retardancy	Class B1 (GB 8624-2012)
Anti-Static	Surface resistance ≤ 3×10⁸ Ω
Temperature Range	-25℃ to +80℃
Connection Options	Zipper / Flange Ring / Steel Ring (Quick-seal available)
Service Life	1–2 years under normal conditions

📜 Engineering Positive Pressure Ventilation Duct φ800-10 Standards Compliance

Manufactured strictly in accordance with the following Chinese national & industry standards:

GB/T 20043-2015 – Ventilation Ducts with Coated Fabrics for Mines
MT/T 391-2012 – Technical Requirements for Mine Ventilation Ducts
GB 8624-2012 – Classification for Burning Behavior of Building Materials
GB 3836.1-2021 – Explosive Atmospheres – General Requirements

Optional certifications & documents: MA Safety Mark, Explosion-proof Certificate, Flame Retardancy & Anti-static Test Reports, Product Photos, Technical Data Sheet.