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Quick Details

Type: Ventilation
Brand Name: JULI
Certification: ISO 9001:2015
Size: 300-3000 diameter
color: Yellow, Customized
Place of Origin: China (Mainland)


Main Advantages:

  • Flame resistance conforms to EN71-2: 2011/DIN4102/UL94/DIN75200.

  • Woven/knitted polyester fabric with both sides PVC coated.

  • Low friction loss.

  • Dual suspension fin/tab to withstand double pressure.  

  • Seam welded by hot air or HF to be airtight and provide low leakage.

  • High wear resistance and tear strength.

  • Anti-static feature(<3*108) optional.  

  • Diameter range 300-3000mm.

  • Standard length 20m, custom length is available.

  • Standard coupling: sealing flap extend, other connection way is available.  

  • Annual production 2,000,000m for ventilation ducts and 15,000,000 m2 duct fabric, fully meet your needs.

  • Ready for fast and easy installation.  

  • Apply for related certification as different country or region.



Technical details:


Item Unit Result
Fabric Color - Black, yellow, orange or customized
Base fabric  - Knitted/woven polyester fabric with both sides PVC coated
Weight G/m2 400-900 or customized
Length m 1-300 or customized
Seam strength N/50mm 1000-2500 or customized
Tensile strength (warp/weft) N/50mm 1500-3000 or customized
Tear strength(warp/weft) N 400-600  or customized
Adhesion strength N/50mm 60-100 or customized
Antistatic <3*108  or optional
Wind pressure resistance PA 3000-10000
Flame retardant - EN-71/UL94/DIN4102  or customized
Duct Diameter mm 300-3000 or customized
Longitudinal seam(related to length) pcs 1-4
Circumferential seam(related to diameter) pcs 1-5
Sealing flap extend mm 100-200
Non-perpendicularity with duct axes 3
Steel ring material - Spring manganese steel or cold drawn steel
Diameter of steel ring mm 5-10 or customized
Grommet spacing mm 500-800  or customized
Suspension way - Suspension fin/patch or customized
Connection way  - Steel ring or zipper coupling
Torsional capacity Duct length (5m) mm 1/24 of circumference
Duct length (>5m) 1/16 of circumference
PS: All of the above data can be customized.   


Our Factory:

  Antistatic property flexible PVC mine ventilation ducting for coal mine



  Antistatic property flexible PVC mine ventilation ducting for coal mine




Q1. Are you a factory or trading company?

A: We are a factory with four workshops.

Q2. What is goods lead time?

A: According to clients' requirements, generally the lead time is 5 to 15 days.

Q3. how can I get some samples?

A: We are honored to offer you samples. New clients are expected to pay for the courier cost, the samples are free for you, this charge will be deducted from your formal order.

Q4. how does your factory do regarding quality control?

A: All the raw materials from international famous brand are detected by 4-6 tests before entering factory, and there is a special team who designs the product according to clients' requirement in our company, the QC department is responsible for detecting dozens of indexes during the processing, so our products will be tested many times before leaving factory, and they accord with SGS standard and other third party certifier services.

Q5. What is your payment?

A: T/T and L/C.

Q6. Can your factory print my LOGO on the goods?

A: Yes, but printing logo will increase the cost, you need to pay in advance, and when the order quantity reaches a certain level, we will return the cost. If it is low, we can afford it.

Q7. how long is the warranty period?

A: 1 year under normal conditions.

Q8. Where is your factory and how can we go?

A: We are located in southwest of China, Chengdu, Sichuan, the hometown of panda. about two hours of aircraft from Shenzhen.