JULII® Layflat ventilation ducting

JULII® Layflat ventilation ducting

The JULI® layflat tunnel ventilation duct is frequently used in the underground with blowing air (positive pressure) from the tunnel outside, which provides enough fresh air for the tunneling project to assure the worker’s safety.


Product Detail

We always get the job done being a tangible team to make certain that we can easily give you the very best high quality and the most effective rate for Factory Cheap China Middle Pressure Axial Flow Fans / Tunnel Ventilation Fans, Our main objectives are to provide our customers worldwide with good quality, competitive price, satisfied delivery and excellent services.
We always get the job done being a tangible team to make certain that we can easily give you the very best high quality and the most effective rate for China Local Fan Ventilation System, Local Fan, Our company has a skillful sales team, strong economic foundation, great technical force, advanced equipment, complete testing means, and excellent after-sales services. Our goods have beautiful appearance, fine workmanship and superior quality and win the unanimous approvals of the customers all over the world.

Product Informations

Foresight conducts independent research and development of high-quality PVC flexible ventilation duct membrane compositions that can be customized based on season, application, and performance to provide product quality stability, cost-effectiveness, extended service life, and environmental adaptability.

The fire resistance of the JULI® tunnel 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.

The automatic production line independently developed by Foresight can realize the production of duct sections with lengths of 100 m, 200 m, and 300 m, including welding suspension fin/patch, welding duct body, folding, etc., which greatly improves the production efficiency and reduces the air leakage rate of the tunnel ventilation duct.

suspension system

Single suspension fin

Two suspension fins

Single suspension patch

Two suspension patches

Coupling system

Zipper Coupling

Velcro Coupling

Eyelet Coupling

End ring Coupling

 Product Parameters

JULI® Layflat 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, two 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 averages for reference, allowing 10% tolerance. Customization is acceptable for all given values.

 Product Feature

◈ For positive pressure applications, layflat ventilation ducts are ideal.
◈ All ducting and fittings are available in spiral and oval.
◈ Airtight seams and grommets are soldered, resulting in negligible friction loss.
◈ Polyester woven or knit fabric with PVC coating on both sides.
◈ The flame resistance meets DIN4102 B1/EN13501/NFPA701/DIN75200 standards.
◈ Customization is available for diameters ranging from 300 mm to 3000 mm.
◈ Standard lengths of 10 m, 20 m, 50 m, 100 m…developed specifically for TBM. Section lengths can reach 200 m, 300 m, or even longer, and lifetimes can range from 5 to 10 years.

JULI® Layflat Ventilation Ducting

Product Advantages

Application

We always get the job done being a tangible team to make certain that we can easily give you the very best high quality and the most effective rate for Factory Cheap China Middle Pressure Axial Flow Fans / Tunnel Ventilation Fans, Our main objectives are to provide our customers worldwide with good quality, competitive price, satisfied delivery and excellent services.
Factory Cheap China Local Fan Ventilation System, Local Fan, Our company has a skillful sales team, strong economic foundation, great technical force, advanced equipment, complete testing means, and excellent after-sales services. Our goods have beautiful appearance, fine workmanship and superior quality and win the unanimous approvals of the customers all over the world.


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