JULI® Antistatic Ventilation Duct

JULI® Antistatic Ventilation Duct

There are no VOCs produced during processing or use, making it environmentally friendly.


The JULI® antistatic ventilation duct is widely used underground with high concentrations of gas. The antistatic properties of the fabric can prevent static electricity from accumulating on the surface of the fabric to form sparks and cause fires. The ventilation duct will bring fresh air from outside and exhaust turbidity air and diluent toxic gases from the underground.

Product Detail

Product Tags

Product Informations

JULI® antistatic ventilation duct is primarily designed for high concentration gas in the underground, such as coal mines and tunnels. Antistatic duct fabric is treated with a water-based surface material that is environmentally friendly, emits no VOC during processing and use, is safe for workers, and stabilizes the antistatic value at 3x106Ω.

The fire resistance of the JULI® antistatic ventilation duct is DIN4102 B1, NFPA701, EN13501, DIN75200, and all fire resistance is accompanied by an SGS test result. When a fire is present, a high flame retardant can help to limit the hazardous and harmful gases that can injure the human body.

suspension system

Single suspension fin

Dpuble suspension fins

Single suspension patch

Double suspension patches

Coupling system

Zipper Coupling

Velcro Coupling

Eyelet Coupling

End ring Coupling

 Product Parameters

JULI®  Antistatic Ventilation Ducting Technical Specification
Item Unit Value
Diameter mm 300-3000
Section length m 5, 10, 20, 30, 50, 100, 200, 300
Color - Yellow, Orange, Black
Suspension - Diameter<1800mm, single suspension fin/patch
Diameter≥1800mm, double suspension fins/patches
Sealing face sleeve mm 150-250
Grommet spacing mm 750
Coupling - Zipper/Velcro/Steel ring/Eyelet
Fire resistance - DIN4102 B1/EN13501/NFPA701/DIN75200
Antistatic Ω ≤3 x 108
Packing - Pallet
The above values are average for reference, allowing 10% tolerance. Customization is acceptable for all given values.

 Product Feature

◈ Used for tunnels and mining with high concentrations of toxic gas.
◈ All ducting and fittings are available in both layflat and spiral as well as oval.
◈ The standard color is black, but other colors can be customized.
◈ Airtight seams and grommets are soldered, resulting in negligible friction loss.
◈ Polyester woven or knit fabric with a PVC coating on both sides.
◈ The flame resistance meets DIN4102 B1/EN13501/NFPA701/DIN75200 standards.
◈ Customization is available for diameters ranging from 200 mm to 3000 mm.
◈ Section lengths can reach 200m, 300m, or even longer when designed specifically for TBM, and lifetimes can range from 5 to 10 years.

JULI® Antistatic Ventilation Duct

Product Advantages

The company has over 15 years of experience in the production of PVC flexible air ventilation ducts and fabric, a strong scientific research team, over 10 engineering and technical staff with professional college degrees, over 30 high-speed rapier looms, 3 composite production lines with an annual output of more than 10,000 tons of calendered membranes, and 3 automatic ducting welding production lines with an annual output of more than 15 million square meters of fabric, providing long-term support and services for fans' company and large projects at home and abroad.


Automatic suspension fin/patch, fabric joining, duct body welding, the welding seam is even and stable, decreasing the influence of human factors on welding stability. The welding efficiency is 2-3 times that of a traditional welding machine, and the lead time is reduced.

The eyelets are automatically buckled by the automatic machine to prevent them from falling off.


The antistatic ventilation duct's basic connections are zippers and Velcro. The extra fabric on which the zipper/Velcro is sewed is welded to the flexible duct body to ensure that there are no sewing needle eyes throughout the ducting, reducing air leakage. The long selaing face sleeve covers the zipper or Velcro, reducing the risk of bursting.

Flexible repair methods include glue, zipper repair band, Velcro repair band, and portable hot air gun.


Several automatic ducting welding production lines with a monthly output of 20,000 flexible ventilation tubes guarantee an assured batch order lead time.


Pallet packing will be designed according to the order quantity and the container size, trying to save transportation costs.


As one of the Chinese standard drafters for flexible ventilation ducting, Foresight is dedicated to the research, design, and development of underground ventilation safety, always taking responsibility for improving the quality of the flexible ventilation tube, extending the service life, reducing the frequency of replacement, and lowering the energy consumption of ventilation equipment, as well as continuously optimizing the unit tunneling cost to improve the product's overall cost performance.


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