High-quality PVC Flange F Section Bar For HVAC Ductwork Systems

PVC/Aluminum Flange Joint Type including:

Invisible Flange Joint

Connector Flange Joint

H Bayonet

Chair Section Bar

U Section Bar

F Section Bar

Material and Construction:

• PVC flange profiles are made from high-quality PVC material,which is durable,flexible,and easy to work with.They are designed to provide a secure grip for the duct and help prevent air leaks,ensuring efficient airflow throughout the system.

Types and Uses:

• There are various types of PVC flange profiles,including invisible flange joints (also known as PVC invisible profiles) and H Bayonet, which are used for joining straight duct sections on pre-insulated HVAC duct installations.

• Other types include connector flange joints,chair section bars,U section bars,and F section bars,which are used for different connection and support purposes in duct installations.


Standard Length and Thickness:

• The standard length of PVC flange profiles is typically 4 meters per piece,and they are available in various thicknesses,such as 20 mm,30 mm,and 40 mm.


Colors and Fire Resistance:

• PVC flange profiles are available in two colors: grey(regular color) and black.They are also fireproof,making them a safe choice for use in HVAC systems.


Applications:

• These flanges are widely used in pre-insulated HVAC duct installations for joining straight duct sections.They are also used in applications such as chemical processing,chromic acid plating and etching exhaust,water and wastewater treatment,laboratory ventilation,and corrosive fume transfer and reclamation.


Packaging and Shipping:

• PVC flange profiles are usually packed by plastic film,with 80 meters packed in one bundle.


Additional Features:

• PVC duct systems,including flanges,offer benefits such as energy savings,ease of installation,uniform dimensions,and broad chemical resistance.They are lightweight,have a low installed cost,a long service life,and high impact resistance for durability.

In summary,PVC flange profiles for air ducts are critical components in the construction and maintenance of efficient HVAC systems,providing secure connections,preventing air leaks,and offering a range of practical features for various industrial and commercial applications.

Cutting And Fabricating Steps Of Air Duct Panels

1.  Material Preparation:

•  Ensure the availability of polyurethane material that meets standard requirements.

•  Gather necessary duct fittings, including elbows, tees, flanges, etc.

2.  Measurement and Cutting:

•  Measure and mark the required lengths of the ducts according to the design specifications using measuring tools.

•  Cut the polyurethane material along the marked lines using appropriate tools.

3.  Board Cutting:

•  Utilize specialized cutting tools to ensure the aluminum foil layer is not damaged, and the cuts are straight.

4.  Cleaning and Gluing:

•  Clean the board surfaces thoroughly before gluing to remove any residue.

•  Apply adhesive evenly on both surfaces of the foam that need to be bonded.

5.  Bonding:

•  Once the adhesive is dry, close the duct.

•  Align the edges and press down on the corners with a hard scraper to ensure a flat bond, checking for vertical alignment on all sides.

6.  Sealing:

•  All cut edges of the outer aluminum layer must be sealed with pressure-sensitive tape to create a vapor barrier.

•  Use a straightedge to ensure neat adhesion of the tape, and a spatula to remove any air bubbles.

7.  Duct Connections:

•  Refer to the table below for connection types and applicability of composite ducts.

•  For joining phenolic aluminum foil composite ducts with polyurethane aluminum foil composite boards, use a 45° angle bonding or “H” reinforcement.

8.  Duct Pattern Cutting:

•  Duct pattern cutting can be done using single, double, or quadruple piece methods to form the shape.

•  Apply adhesive evenly along the cut edges and ensure the bond is smooth, without twists, misalignments, or cracks.

9.  Duct Board Assembly:

•  The grooves for duct board assembly can be in the form of 45° angles or 90° trapezoids.

•  Do not damage the reserved aluminum foil layer when cutting, and leave a lap joint of more than 35mm at the sealing end.

10.  Duct Reinforcement:

•  When reinforcing ducts with metal channel frames or corrugated channel frames, install internal supports and secure them to the reinforcement frame as a single unit.

FAQ

Q1:Leading time?

Payment terms：

T/T 30% deposit in advance, balance payment before shipment or L/C at sight

Delivery time：

It usually takes only 10-15 days after deposit

(depends on order specific and quantity ) 

Sample policy：

Free samples are available,shipping fees at clients’ expense