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Ventilation Duct

Negative pressure air duct is used for coal mines, tunnels, underground local fan for positive pressure through

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Introduction of Ventilation Duct

Application:used in coal mines, tunnels, underground local fan for negative pressure ventilation;
air duct varieties: coated cloth duct by rubber coated cloth material into a positive pressure air duct, plastic and rubber coated cloth duct pressure coated cloth duct pressure.
1- end of the ring    2 - rings installed lines   3- rings   4- trans side
projet size tolerance(mm)
air duct dia.(D) 300 400 450 500 600 800 1000 0±6
air duct length(L) 5      10      20 0±100
1, hairdryer size or special shape specifications shaped duct, elbows, tees, etc., can be manufactured according to the buyer's requirements.
2, hairdryer rings, rings and other metal parts for end specifications are subject to special requirements agreed upon by both parties.
3, hairdryer opposite side ends plus its length L, is 150-200mm.
Duct ventilation duct performance test report
Diameter,,mm one hundred meters windage(N·S 2 /M 8 )
300          ≤811.0
400          ≤196.0
450          ≤122.0
500          ≤54.0
600         ≤24.0
800         ≤6.0
1000         ≤2.0

Photos of Ventilation Duct



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  • Contacts:N***s E-mail:N***s @m***l.mx
    We need five Ventilation Duct for our project. If you have any further question please feel free to contact me.
    Thanks for your support to us! And our sales will contact you soon!
  • Contacts:H***n E-mail:H***n @l***n.vn
    Want to cooperate with your company, please get back to us
    Dear Customer, We clarify as soon as possible your request and will contact you shortly. China Coal Group
  • Contacts:T***y E-mail:T***y @a***l.com
    Quote us your best price pleas. Looking forward to your quick reply
    We clarify as soon as possible your request and will contact you shortly
  • Contacts:Mr.ntho*** E-mail:***as@ene***x.com
    What is your best price for Ventilation Duct
    Thank you for your inquire. The sales person will contact you soon.
  • Contacts:Mr.batz*** E-mail:***kh@aero***olia.mn
    How much for your Ventilation Duct
    Thank you for your inquire. The sales person will contact you soon.
  • Contacts:Mr.man***E-mail:***oliz@aclines.com
    Please quote us your Ventilation Duct
    Thank you for your inquire. The sales person will contact you soon.
  • Contacts:Mr.shi*** E-mail:***eed@gmail.com
    What is the CIF price on your Ventilation Duct
    Thank you for your inquire. The sales person will contact you soon.
  • Contacts:Mr.ari*** E-mail:***kve@y-ta***.com
    How much for your Ventilation Duct
    Thank you for your inquire. The sales person will contact you soon.
  • Contacts:Mr.Hus E-mail:***yev@gmail.com
    How much for your Ventilation Duct
    Thank you for your inquire. The sales person will contact you soon.
  • Contacts:Mr.Ays*** E-mail:***info@ca***org
    Please send me FOB price on Ventilation Duct
    Thank you for your inquire. The sales person will contact you soon.
  • Contacts:N***s E-mail:N***s @m***l.mx
    We need five Ventilation Duct for our project. If you have any further question please feel free to contact me.
    Thanks for your support to us! And our sales will contact you soon!
  • Contacts:H***n E-mail:H***n @l***n.vn
    Want to cooperate with your company, please get back to us
    Dear Customer, We clarify as soon as possible your request and will contact you shortly. China Coal Group
  • Contacts:T***y E-mail:T***y @a***l.com
    Quote us your best price pleas. Looking forward to your quick reply
    We clarify as soon as possible your request and will contact you shortly
  • Contacts:Mr.ntho*** E-mail:***as@ene***x.com
    What is your best price for Ventilation Duct
    Thank you for your inquire. The sales person will contact you soon.
  • Contacts:Mr.batz*** E-mail:***kh@aero***olia.mn
    How much for your Ventilation Duct
    Thank you for your inquire. The sales person will contact you soon.
  • Contacts:Mr.man***E-mail:***oliz@aclines.com
    Please quote us your Ventilation Duct
    Thank you for your inquire. The sales person will contact you soon.
  • Contacts:Mr.shi*** E-mail:***eed@gmail.com
    What is the CIF price on your Ventilation Duct
    Thank you for your inquire. The sales person will contact you soon.
  • Contacts:Mr.ari*** E-mail:***kve@y-ta***.com
    How much for your Ventilation Duct
    Thank you for your inquire. The sales person will contact you soon.
  • Contacts:Mr.Hus E-mail:***yev@gmail.com
    How much for your Ventilation Duct
    Thank you for your inquire. The sales person will contact you soon.
  • Contacts:Mr.Ays*** E-mail:***info@ca***org
    Please send me FOB price on Ventilation Duct
    Thank you for your inquire. The sales person will contact you soon.
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