Lay Flat Ventilation Duct

• Nylon fabric with both sides PVC coated, Low friction loss, easy-installed, MSHA approved.
• High-strength welded construction provides exceptional airflow performance.
• Flame retardant standards NFPA701:2015 and DIN 4102 B2 approved.
• High tensile strength and tear strength approved by DIN53354 and DIN53363 test methods.
• Diameter: 200 mm-3,200 mm (Custom diameter available).
• Standard Length:1 m-300 m (Custom length available).
• End connection: zipper / Velcro/ steel ring / eyelets.
• Antistatic fabric optional.

Request A Quote

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)

Download Our Catalog

Application

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

Other Parts of An Underground Ventilation Ducting System

Specialty Shape Ventilation Ducts End Connection & Suspension Fittings Repair Kits

Adapter Duct

Duct adapter changes the ducting system from a bigger size to a smaller one and vice versa. It minimizes airflow leakages and material costs as the connection between the extractor fan and the duct.

Bend Duct

Available in angles such as 30, 45, 65 and 90 degrees, duct bends flexibly adjust the sharp turns of airflow direction.

Tee and WYE Duct

Degree refers to the angle between the straight duct flow and the branch. Branches of 30, 45, 60, and 90-degree angles, so do the Tee and WYE ducts.

Steel Ring End

Zipper End

Velcro End

Steel Clamp

PVC Rubber Clamp

Carabiner Snap Hook

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.