Introduction: PVC fire-retardant flexible mining duct fabric provides an advanced and reliable solution for the mining industry, demonstrating outstanding characteristics in firefighting, ventilation, and environmental friendliness. Its application in ventilation system construction and emergency situations, such as fire response, effectively enhances the safety standards in mining operations. With continuous technological advancements, PVC fire-retardant flexible mining duct fabric will continue to play a crucial role in contributing to the safety and sustainable development of the mining industry.

Specifications:

Colors: White, yellow, orange, or customized
Diameter: 300-3000 mm
Length: 10m-300m
Flame Retardant: EN-71/UL94/DIN4102 or customized

Temperature: -30°C to 70°C

Specification	Options
Available Colors	Yellow, black, green
Duct Length	5m/section, 10m/section, 20m/section
Air Supply Forms	Positive pressure duct, negative pressure duct, supply air duct, exhaust air duct

For L=3m, vertical seams should not exceed 1.
For L=5m, vertical seams should not exceed 4.
For L=10m, vertical seams should not exceed 2.
For D=300, 400, 500mm, circumferential seams should not exceed 2.
For D=600, 800, 1000mm, circumferential seams should not exceed 3.
Hemming Lengths: L1=150mm, L2=200mm
End Ring Bending Deformation:

Deformation is less than or equal to 1.2% of the original diameter.
The cross-section of the end ring with the duct line has a non-perpendicularity of no more than 4°.
Duct Hangers (Hooks):

Hooks are placed 200mm from both ends of the duct, at the intersection of circumferential seams and inner ring pressure bars.
Hooks are installed at intervals of one inner ring per two sections (300mm spacing).
Hook installation should result in a twist not exceeding 1/24th of the duct's circumference (L=3m or 5m), and not exceeding 1/16th for L=10m.
Duct Ventilation Performance:

Duct kilometers wind resistance and kilometers air leakage rate comply with the values in Table 3.

Duct Inner Diameter (mm)	Hundred-Meter Wind Resistance (N?s2/m^8)	Hundred-Meter Air Leakage Rate (%)
300	≤1728.0	≤5.0
400	≤410.0	≤5.0
500	≤134.0	≤5.0
600	≤54.0	≤5.0
800	≤13.0	≤5.0

Note: Ducts, elbows, tees, etc., with special shapes are manufactured according to the requirements of the customer.

2.1: Characteristics Introduction
Fire Resistance: PVC fire-retardant flexible mining duct fabric exhibits excellent fire resistance. The materials and design effectively suppress the spread of fire in emergency situations, providing additional firefighting support for mining operations.

Flexible Design: The flexible design of the mining duct fabric accommodates the complexity of underground mining layouts, allowing it to bend flexibly and enhance the adaptability and convenience of the ventilation system.

Environmentally Friendly Materials: This duct fabric is manufactured using environmentally friendly materials, meeting environmental requirements and ensuring the sustainability and safety of the mining environment.

High-Temperature Resistance: PVC fire-retardant flexible mining duct fabric performs well in high-temperature environments. Its design enables stable operation in high-temperature conditions, ensuring the normal functioning of the ventilation system in various extreme environments.

2.2 Accessories

2.3 Finished Product Dimensions:

Diameter: 300-3000 millimeters
Length: 10 meters to 300 meters

2.4 Comparison of product advantages and disadvantages

2.9 Finished product display:

Anhui DER New Material Technology Co., Ltd. is located in Zhangbaling Plastic Polymer Industrial Park, Zhangbaling Town, Mingguang City, Chuzhou City, Anhui Province. It is a company specializing in the production of PVC flags, PVC tarpaulins, PVC rolls, TPU coated cloths, sunscreen cloths, and ultra-transparent PVC Membranes, swimming pool linings. Our factory accepts finished product processing and customized services, and can OEM to produce functional products of different thicknesses and softness; with a rich product variety and highly competitive prices, it sells well in more than 100 countries around the world.

Email: alina@der-factory.com 

WhatsApp: +8619955047834