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1. Pre Insulated Duct System
Accessories Invisible flange joint and tee connector

2. Invisible flange joint
aluminium 20 mm
This special aluminum flange
permits 20 mm the ducts to be
joined with extremely low
leakage. The bars are supplied
in 4 meter lengths.

3. Invisible flange joint
aluminium 30 mm
This special aluminum
flange permits 30 mm the
ducts to be joined with
extremely low leakage. The
bars are supplied in 4 meter
lengths.

4. Invisible flange joint
polymer 20 mm
This special polymer flange
permits 20 mm the ducts to
be joined with extremely low
leakage. The bars are
supplied in 4 meter lengths.

5. Tee connector
flange joint 20/30
mm
This flange permits the
flanging of one duct into the
side of another take-offs as
tap-in or plenum chamber.
The bars are supplied in 4
meter length.

6. H polymer bayonet
Built in shock-resistant
polymer, this piece
permits "invisible flanges"
to be connected. Supplied
in 4 meter rods

7. Covering angle
20/30 mm
Grey polymer covering angle.

8. Zinc-coated steel
angle bracket
20/30mm panel
1.5 mm thick zinc-coated
steel angle bracket.

9. Insulating flange for ducting: Polymer & Aluminum Composition, sub-structure, with
plastic core, forming no cold bridge effect, which blocking the cold metal profiles,
thermal conductivity, improved compartment temperature, thermal performance of
existing technology products.
Insulating flange type-invisible flange joint Insulating angle flange

10. Insulating flange
type-F
Polymer & Aluminum
Composition, could be
sub-structure.

11. Pre Insulated Duct System
AHU(Air handling units ) & Grilles connections.
Reinforcement.

12. " F" section bar in
aluminum or
polymer -20/30mm
Permits all accessories with
fastening frames higher than
20 mm to be fastened to the
ducts. Supplied in 4 meter
rods

13. Chair section bar in
aluminum or
polymer - 30 mm
Used to fasten ducts to air
handling units and in the
assembly of linear
diffusers. This section bar
is supplied in 4 meter rods.

14. Reinforcement
section bar in
aluminum
Special high stiffness
aluminum alloy
reinforcement section bar.
Bars are supplied in 4 meters
rods

15. Aluminum shaped
disk
Aluminum disk to
distribute the pressure
created at the centre over
a wider surface to prevent
damage to the panel. Disk
diameter 100mm, hole
diameter 10 mm.

16. Angle Bracket
Polymer angle bracket for
reinforcement.

17. Glues, tapes and
sealants
Paint glue 3kg, only for
PU/PIR composite panels
ducting, special glue
formulated to obtain perfect
adhesion on easy panels
foam. The product is
supplied ready-to-use.

18. Easy aluminum
tape
Self-adhesive aluminum
tape to use in the
construction of the ducts.
Supply: 30 meters roll and
24 rolls pack.

19. Duct Sealant
Medium-viscosity adhesive
for the gluing of aluminum
and Polymer section bars.
500 gr pack.

20. Duct Making Tools
Man Power≤ 2 people
Less noise
Do not use electricity
Duct Fabricate so easy.

21. Yuansen Duct
To provide the best solution for your ducting needs with . Our pre insulated ducts (PIR) have an
excellent insulation properties, lightweight material, and great durability. PIR Duct (Polyisocyanurate
Rigid Form) is an improvement from PUR Duct (Poly Urethane Rigid Form) with better fire
retardancy, higher density and better R value.
Thanks for your inquiry.