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B1 Fire-rated Cold Storage Panels

The core functions of this product are to achieve excellent insulation (with a thermal conductivity as low as 0.024 W/(m·K)), fire safety (up to B1 grade flame-retardant standard), and structural support.
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Product Introduction


Overview of PIR Cold Storage Sandwich Panels


PIR Cold Storage Sandwich Panels are high-performance enclosure panels engineered for modern cold storage facilities. The panel adopts a solid sandwich structure, with polyisocyanurate (PIR) rigid foam as the core material and high-strength color steel plates compounded on both sides. It integrates four core functions: excellent insulation, top-tier fire safety, moisture-proofing and high structural strength. With a thermal conductivity as low as 0.024 W/(m·K) and B1 fire-retardant grade, it effectively blocks internal and external heat exchange, creating a stable low-temperature environment. Widely applied to walls and roofs of cold chain logistics centers, food processing workshops and pharmaceutical cold storage, it is a key building material to ensure energy-saving, safe and reliable operation of cold storage facilities.


B1 Fire-rated Cold Storage Panels


Product Advantage


Core Advantages and Technical Features


Outstanding Fire Safety Performance

This is the most distinctive feature of the product. The PIR core material has a decomposition temperature up to 260℃, much higher than the 220℃ of ordinary PUR materials. After special formula treatment, the panel has extremely low smoke density during combustion, fully meeting and exceeding the national B1-level flame-retardant standard. It provides a higher safety barrier for cold chain storage facilities.


High-Efficiency Energy-Saving Insulation Core

The panel uses an advanced PIR foaming formula, maintaining a leading thermal conductivity of ≤0.024 W/(m·K) for a long time. This allows using thinner panels to achieve better insulation effects under the same design temperature, reducing cold leakage and cutting customers’ long-term operating energy consumption by over 30%.


High-Strength Stable Structural System

The unique molecular structure of PIR core material gives it higher density and strength, with a core density of ≥42kg/m³ and excellent compressive strength. Its bonding strength with high-quality metal panels reaches ≥0.12MPa, ensuring overall structural integrity. It is ideal for large-span and high-rise cold storage walls and roofs without deformation or collapse risks.


Super Moisture-Proof & Dimensional Stability

The panel boasts an ultra-high closed-cell rate (>95%) and ultra-low water absorption rate (<2.5%). It hardly absorbs water in high-humidity cold storage environments, effectively preventing insulation performance degradation and panel deformation (dimensional change rate <1.5%) caused by core material moisture.


Environmental Protection & Long-Lasting Durability

All products adopt environmentally friendly fluorine-free foaming agents like cyclopentane, complying with international environmental standards and obtaining green building material certification. The surface layer uses 55% aluminum-zinc alloy coated steel plates with strong corrosion resistance, ensuring a service life of over 25 years.


Convenient & Reliable Sealing Installation

Factory-prefabricated panels feature a precise full-mouth lock seam interlocking structure. Combined with special low-temperature sealant, they can be spliced quickly and tightly on site. This installation method eliminates cold bridges from the source and improves construction efficiency by up to 40%.


Technical Parameters


Technical Parameters of PIR Cold Storage Sandwich Panels


The product model is PIR Panel, with a fire resistance rating up to B1 grade. It supports full customization for specifications and transport packages to meet diverse project needs. The manufacturer provides turn-key project services, covering the whole process from design to installation. The factory covers an area of 600,000 square meters with 1,800 employees and an annual production capacity of 1,000 units. The product has passed authoritative certifications including CCC, ISO9001 and FM Approvals, with the core features of environmental protection, fire resistance and stable metal panel structure.


Model NO.

PIR Panel

Fire Rating

B1

Customized

Customized

Service

Turn-Key Project

Employees

1800

Specification

Customized

Origin

China

Feature

Environmental, Fireproof, MetalPanel

Certification

CCC, IS09001,FM Approvals

Manufacturer

Yes

Factory Area

600000 Square Meters

Transport Package

Customized

Trademark

SQUARE

Production Capacity

1000units/Year


Product Uses


Applications of PIR Cold Storage Sandwich Panels


Pharmaceutical & Vaccine Cold Chain Storage

As the core enclosure material for GSP pharmaceutical cold storage and vaccine storage centers, it meets the mandatory fire protection regulations for pharmaceutical warehousing. Its stable ultra-low thermal conductivity controls the warehouse temperature fluctuation within ±2℃, providing a reliable constant temperature and humidity environment for drugs and vaccines.


Large-Scale Automated Low-Temperature Logistics Centers

It is suitable for low-temperature cold storage and automated stereoscopic storage below -25℃. Its high strength and dimensional stability can support automated track and shelf systems, while its excellent insulation performance reduces electricity costs significantly.


Food Processing & Central Kitchen Constant-Temperature Workshops

It is an ideal choice for food processing clean workshops, central kitchen processing areas and pre-cooling rooms. Its super moisture-proof and mold-proof properties meet food hygiene standards, and its smooth metal surface is easy to clean and disinfect.


High-End Fresh Food Retail & Last-Mile Delivery Cold Storage

It is widely used in high-end supermarket cold chain distribution centers, fresh food e-commerce forward warehouses and catering chain cold storage. Its convenient installation supports rapid deployment and renovation in commercial areas, and its aesthetic appearance meets commercial display needs.


FAQ


FAQ About PIR Cold Storage Sandwich Panels


What are the fire resistance differences between PIR boards and ordinary PUR boards?

The core difference lies in molecular structure. PIR forms more stable isocyanurate rings through modification, with a decomposition temperature of 260℃, which is much better than PUR’s 220℃. It produces less smoke during combustion and achieves a more stable B1-level flame-retardant effect.


Will the insulation performance decline in extremely low-temperature cold storage below -30℃?

No. The ultra-high closed-cell rate (>95%) ensures the thermal conductivity remains stable at ≤0.024 W/(m·K) for a long time. The foam structure stays stable even in ultra-low temperatures, effectively blocking heat transfer.


Why is PIR board more cost-effective despite its higher price than PUR board?

Its long-term value is reflected in three aspects: better fire safety reduces insurance and risk costs; ultra-low thermal conductivity brings significant energy-saving benefits; high dimensional stability lowers maintenance needs, making the whole life cycle cost more advantageous.


How to handle panel joints to ensure airtightness?

We adopt a dedicated eccentric hook lock or tongue and groove insertion system, combined with low-temperature elastic sealant. This design maintains tight interlock during temperature-induced panel shrinkage, achieving dual physical and chemical sealing to prevent cold bridges and cold leakage.


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