Special Design for Layfalt Ventilation Ducting - JULI® Spiral Ventilation Ducting – Foresight

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With a positive and progressive attitude to customer's interest, our enterprise continually improves our products excellent to meet the wants of customers and further focuses on safety, reliability, environmental requirements, and innovation of Ducting And Ventilation, Anti-Static Fabric, Air Duct Cover, We have been normally seeking forward to forming profitable company relationships with new clientele around the environment.

Special Design for Layfalt Ventilation Ducting - JULI® Spiral Ventilation Ducting – Foresight Detail:

Product Informations

JULI^® spiral ventilation duct is made of manganese steel with good elasticity as the reinforced steel wire and can be used under positive pressure for air blowing as an elbow in the underground. It is made by a special welding machine in Foresight with a good appearance and excellent folding performance. During ventilation, the stress is smooth and uniform, and it can bear greater pressure without the danger of blowing. The JULI^® spiral ventilation duct can also be used for negative pressure and exhausting air from a tunnel inside. The reinforced steel wire is made of cold-drawn steel, which can support high air extraction pressure to meet the needs of customers.

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.

Product Parameters

JULI^® Spiral Ventilation Ducting Technical Specification
Item	Unit	Value
Diameter	mm	300-2500
Section length	m	5, 10
Color	-	Yellow, Orange, Black
Suspension	-	Diameter<1800mm, single suspension ring
Suspension	-	Diameter≥1800mm, double suspension ring
Suspenion ring spacing	mm	200-600
Steel ring diameter	mm	5-10
Standard pitch	mm	100-300
Sealing face sleeve	mm	150-250
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

◈ Designed for both high negative and positive pressure and elbow use.
◈ Spiral reinforced by spring steel wire/individual steel ring (end ring), seams and PVC profile welded airtight, smooth inner surface, low friction loss.
◈ All ducting and fittings are available in an oval shape.
◈ Customization is possible, with a diameter range of 400 mm to 2100 mm.
◈ Flame resistance conforms to EN13501/DIN4102 B1/NFPA701/DIN75200.
◈ Standard length, 5 m, 10 m, 15m or 20m.
◈ The antistatic feature (3×10⁸Ω) is optional. The newly developed water-based material that is used for antistatic surface treatment is an environmentally protective material without VOC emission in processing and use, and is also healthy for workers. It makes the antistatic value stabilize at 3×10⁶Ω.

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No matter new buyer or old purchaser, We believe in long expression and trusted relationship for Special Design for Layfalt Ventilation Ducting - JULI® Spiral Ventilation Ducting – Foresight , The product will supply to all over the world, such as: Qatar, Boston, Porto, Our aim is to help customers to make more profits and realize their goals. Through a lot of hard work, we establish a long-term business relationship with so many customers all around the world, and achieve win-win success. We will continue to do our best effort to service and satisfy you! Sincerely welcome you to join us!

Methods Of Tunnel Ventilation