Semi Rigid Ventilation Duct

• Nylon fabric with both sides PVC coated, easy-installed, high-strength welded construction provides exceptional airflow performance.
• Spiral ventilation duct with spring steel wire (φ5mm-φ10mm) reinforced featured with wear protection and high pressure resistance.
• Diameter: 200 mm-2,500 mm (Custom diameter available).
• Standard Length: 1 m-20 m (Custom length available).
• End connection: zipper / Velcro/ steel ring.
• Antistatic fabric optional.

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Standard Technical Specifications

PVC Fabric		SL-FPD-Ⅱ	SL-FPD-TⅢ	SL-FPD-TⅡ	SL-FPD-Ⅰ	SL-FPD-TⅠ
Threads & Yarn		1000D×1000D	1000D×1000D	1300D×2000D	2000D×2000D	2000D×2000D
		9×9	9×9	9×9	9×9	12×12
Total Weight (gsm)		500±20	550±20	550±20	600±20	700±20
Color		Yellow / Black / Green / Orange
Tensile Strength (DIN53354)	Warp (N/5cm)	1000	1150	1800	2600	3100
	Weft (N/5cm)	1200	1400	2000	2800	3800
Tearing Strength (DIN53363)	Warp (N)	240	260	350	650	820
	Weft (N)	320	350	400	700	960
Working Temperature		-30℃ ~ +80℃
Flame Retardant		NFPA701:2015, DIN 4102 B2
Inside Diameter		200mm – 3200mm
Section Length		1m – 300m
End Finish		Zipper / Steel Ring / Velcro / Eyelets
Anti-static		≤10 ^⁸Ω (if required)

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Application

• Mining projects
• Metro projects
• Highway projects
• Railway projects
• Hydropower station projects
• Water diversion projects
• Underground oil storage projects
• Machine equipment connector
• Other underground projects requiring ventilation.

End Connection & Suspension Fittings Specialty Shape Semi-Rigid Ducts Repair Kits

Steel Ring End

Zipper End

Velcro End

Steel Clamp

PVC Rubber Clamp

Carabiner Snap Hook

Elbow Semi-Rigid Duct

Oval Semi-Rigid Duct

Rectangle Semi-Rigid Duct

Repair Sleeve by Velcro

Repair Sleeve by Zipper

Repair Patch

Customize YOUR Ventilation Duct

Every parts of the ventilation ducting system matter. Sulong ventilation duct with multiple custom options fulfills your requirements in budget and quality.