Name: PIR PID Board Suppliers and Manufacturers - China Factory - UNT Duct
Brand: UNTDuct
SKU: 313046761

Thanks to its excellent products and quality services, UNT Duct is one of the leading pir pid board manufacturers and suppliers in China. Welcome to buy the high quality and customized products from our factory. We will offer you the best service and fast delivery.

PIR PID Board

PIR PID Board deliver high-performance, environmentally sustainable air distribution for modern HVAC systems. Constructed as an integrated sandwich panel with aluminum foil facings and rigid PIR foam core, they outperform traditional galvanized steel ducts requiring on-site insulation. Featuring low energy loss and eco-friendly formulation, they support energy conservation and meet green building requirements. Ideal for hotels, office complexes, airports, hospitals and other commercial and public buildings.

Composition & Structural Design

This panel features a sandwich composite structure, consisting of an insulating foam core sandwiched between two robust protective facing layers:

Insulating Core Substrate The core adopts rigid PIR foam with high closed-cell structure. It delivers outstanding thermal insulation and superior moisture resistance. Moreover, the foam is manufactured without ozone-depleting CFCs and HCFCs, meeting eco-friendly production standards.

Dual-Side Protective Facings Both sides of the foam core are firmly laminated with protective claddings, most commonly embossed aluminum foil. The standard indoor-grade aluminum foil thickness is 80 microns. For outdoor installation and heavy-duty service requiring enhanced durability, thicker aluminum foil or pre-coated galvanized steel panels are available as alternatives.

Send inquriy

Material and Structural Characteristics of PIR PID Board

Advantages of the core insulation layer: It adopts polyisocyanate (PIR/PU) foam base material, with a thermal conductivity as low as 0.018-0.022 W/(m · K). Its insulation and heat insulation performance far exceeds that of traditional rock wool and glass wool. It can effectively prevent the heat exchange between the cold/hot air inside the air duct and the external environment, reduce energy loss, and lower the energy consumption of the air conditioning system operation.

Composite structure design: It adopts an integrated structure of "insulation layer + outer protective shell". The outer protective shell can be made of materials such as aluminum foil, color steel plate, and PVC, which has excellent moisture-proof, anti-corrosion and anti-aging performance. It can prevent the insulation layer from absorbing moisture and failing, and extend the service life of the product. The inner layer is closely attached to the air duct, reducing air gaps and enhancing insulation and sealing performance.

Stable physical properties: The product has a uniform density (50-55 kg/m³), a compressive strength of ≥250 kPa, is not prone to deformation or collapse, and can withstand minor collisions during installation and use. It also has excellent flame-retardant performance (reaching B1 grade flame-retardant standard), and has low smoke toxicity when exposed to fire, ensuring safe use.

Send inquriy

Main Production Process of PIR PID Board

1. Raw Material Mixing

2. Aluminum foil embossing

3. PUR Foam Injection

4. Foaming & Laminating

5. PIR PID Board Cutting

6. PIR PID Board auto-stacking

7. Packing of PIR Duct Board

8. Stocking of PIR PID Board

Why choose UNTDuct

UNTDuct System

Packaging of Duct Panel

Specification

Item	Unit	Specification
Standard Panel Size	mm	3950x1200x20
Alu. Foil Thickness	mm	0.06 or 0.08
Foam Density	kg/m³	50-55
Fire Safety (BS476Part 6&7)		Class 0
Thermal Conductivity	W/(m·K)	0.020
Compressing Strength	MPa	0.2
Bending Strength	MPa	2
Water Absorption	%	0.36
Dimension Change	%	0.3
Working Temperature	℃	-60 to +80
Max Pressure in duct	Pa	1500
Maximum Allowable Wind Velocity	m/s	≤15
Max Continuous Running Temperature	℃	≤70
Lifespan of PIR Air Duct	years	>20

PRE-INSULATED DUCT vs G.I. DUCTWORK

Metric	20mm PIR Pre - Insulated Duct (with 0.08mm Alu. Foil, )	0.5mm G.I Duct + 30mm Rubber Plastic (40-90kg/m³)
Fire Safety	Compliant (Class 0/BS 476, AS 1530.3). Self-extinguishing PIR core, low toxic smoke, non-combustible alu foil.	G.I non-combustible; rubber plastic fire-retardant but requires coating to meet strict codes.G.I
Thermal Insulation	Excellent. λ=0.020 W/m·K, no thermal bridging. 20mm integrated structure ensures consistent insulation.	Fair. λ=0.035 W/m·K, thermal bridging at G.I joints. 30mm insulation offset by metal conductivity.
Hygiene & Air Quality	Superior. Non-porous alu foil, smooth inner surface, moisture-resistant PIR. Meets cleanroom/hospital standards.	Poor. Porous rubber plastic traps dust/mold; G.I-insulation gaps breed pathogens.
Lightweight	1.4-1.5 kg/m². Ultra-light, reduces structural load; ideal for retrofits/timber-framed buildings.	5.1–6.3 kg/m². Heavy G.I base + bulk insulation; requires reinforced supports.
Energy Efficiency	Excellent. 20–30% lower HVAC energy consumption. Minimizes heat gain/loss in conditioned air.	Low. 20–30% higher energy loss due to inferior insulation and thermal bridging.
Ease of Construction	Easy. Factory-prefabricated tongue-and-groove joints. No separate insulation step; 40–60% less labor time.	Complex. Two-step on-site process: G.I duct fabrication + rubber plastic wrapping. Labor-intensive, prone to gaps.
Quiet Operation	Good. PIR core absorbs 10–15 dB airflow noise; alu foil dampens vibration.	Fair. Rubber plastic provides basic sound reduction, but G.I vibration and insulation gaps reduce efficiency.
Space Savings	Excellent. 20mm total thickness (all-in-one). Fits tight ceilings/retrofit cavities.	Poor. 30.5mm total thickness (0.5mm G.I + 30mm insulation). Bulky, requires larger installation space.
Environmental Friendliness	Balanced. CFC/HCFC-free PIR, recyclable alu foil. 20–30-year lifespan; net carbon positive in 1–3 years.	Low. Rubber plastic non-recyclable; 10–15-year lifespan. Frequent replacement increases waste; higher energy emissions.
Air Leakage	Superior. ≤2% air leakage (EN 1507, AS/NZS 3660.1). Airtight factory joints + alu foil vapor barrier.	Poor. 5–10% air leakage. On-site sealing gaps; separate vapor barrier required.

Performance comparison based on UNT Duct product data and standard system configurations. Actual performance may vary depending on system design, installation method and project conditions.

How To Make PIR Pre-insulated Straight Duct

Step 1 - Tracing: outline the duct shapes on the panel.

Step 2 - Cutting: Using manual cutting tools, cut along the panel edges and create 90 degree "V" grooves on the panel.

Step 3 - Gluing: Apply glue to the cutting surfaces of the panels.

Step 4 - Folding: After the glue is cured, fold the sides toward each other to form the straight duct.

Step 5 - Taping: The tape is applied only to the external seams of the duct where the sides of the panel were joined for air-tightness.

Step 6 - Flanging: After applying glue and positioning the steel angle bracket, process to fit the PVC or aluminum invisible flanges.

Step 7 - Reinforcement: reinforce the duct with an aluminum reinforcement bar and G.I. Shaped disks, if necessary.

Step 8 - Sealing: After the duct is assembled, seal all internal joints hermetically with silicone.

Need the complete fabrication solution?
UNT Duct supplies PIR duct panels, fabrication tools, jointing accessories, reinforcement components and related materials for complete pre-insulated duct fabrication.

Send inquriy