High-Strength PIR Roof Sandwich Panel for Thermal Insulation and Fire Safety

This is a high-quality PIR foam core sandwich panel system with excellent thermal insulation and fire resistance, suitable for both roof and wall applications.

item no.:

N/A

product orgin:

China

shipping port:

Xiamen/Qingdao

payment:

T/T;L/C at sight

color:

Customized

product categories

new products

product details

PIR is a foaming material with a cross-linked structure formed by using different ratios of isocyanate and polyol and adding different catalysts and additives on the basis of polyurethane foam. It contains more isocyanate groups in its chemical structure. PIR foam is flame retardant, has low thermal conductivity, is lightweight, has high bending strength, does not absorb water, and does not rot.

Product Specifications

Specification	Details
Core Thickness	50/75/100/150 mm (PU/PIR )
Panel Width	Standard 950mm,1000mm,1150mm
Panel Length	20FT container: ≤ 5.95m 40FT container: ≤ 11.95m
Density of Core	40 kg/m³
Thermal Conductivity	≤ 0.022 W/(m·K)
Fire Rating	Class A2 - s1 (excellent fire resistance)
Surface sheets	PPGI/ PPGL/ Aluminum sheets/ Al-Mg-Mn alloy metal sheets/ Stainless steel
Aluminumsheets/Al-Mg-Mnalloymetal sheet	0.70 - 1.20 mm
Steel thickness	0.40 - 0.70 mm
Stainless steel	0.40 - 0.60 mm

Product Advantages

1.Fire-Safe Core

Achieves Class B-s3,d0 fire rating, self-extinguishing within 2 seconds. Zero flaming droplets protect steel structures in high-risk environments like warehouses or factories.

2. Energy-Saving Insulation

Closed-cell PIR core delivers λ=0.022 W/m·K, reducing HVAC energy costs by 30%+. Maintains stable U-values even at extreme temperatures (-50°C to +120°C).

3. Heavy-Duty Strength

Rigid polyisocyanurate foam bonded to profiled steel facings offers 4.5 MPa compressive strength. Supports heavy roof loads, snow, and maintenance traffic without sagging.

4. Quick Installation

Lightweight 40–60 kg/m² panels with tongue-and-groove joints cut labor time by 40%. No additional insulation or fireproofing layers needed,one product, one installation.

Manufacturing Process of PIR Sandwich Panels

Using the drum principle, the metal plate is placed on a specially designed conveyor plate, and the spraying device sprays the PIR foaming agent on the metal sheet. After high-temperature treatment, the foaming agent is formed between the metal sheets. We can produce different types and grades of PIR panels according to customer needs. The sandwich panel production line adopts a continuous foaming process, which can complete the batching at one time, and can adjust the proportion online at will according to the temperature, so as to produce high-standard building panels.

Manufacturing Process of PIR Sandwich Panels

Product Application

Yumisteel PIR sandwich panels are widely used in industrial plants, warehouses, cold storage, and commercial buildings. They are ideal for hospitals, schools, data centers, and chemical facilities requiring high fire safety. The panels also serve as roof and wall cladding for modular housing, livestock farms, and temporary structures.

Sandwich panels building

Why Choose Yumisteel?

Yumisteel sandwich composite panels offer excellent insulation, heat resistance, high strength, and aesthetic appeal. They are fire-proof, flame-retardant, and easy to assemble, making them ideal for building envelopes and insulation cladding walls across various construction projects.

Our in-house production line for rock wool composite panels is equipped with a 6m bending machine, 6m shearing machine, drilling machine, blast cleaning equipment, and a full CNC system with automatic cutting, assembly, welding, and straightening functions,eliminating manual operation errors.

With strong technical expertise and efficient scale production, Yumisteel has established itself as a premier steel structure and wall panel fabrication and installation provider.

Yumisteel provides dedicated technical support throughout the entire building cycle ,from pre-construction to manufacturing.

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