In the modern industrial landscape, the demand for high-efficiency thermal envelopes has shifted from simple insulation to multi-functional safety systems. Polyisocyanurate (PIR) Sandwich Panels have emerged as the "Gold Standard" in this evolution. Unlike traditional PUR (Polyurethane), PIR panels undergo a chemical cross-linking process at high temperatures, creating a stable isocyanurate ring. This molecular structure is what gives our CE-certified panels their superior Fire Rating (Class B1/B2 according to GB8624 or Grade B-s1, d0 according to EN 13501).
With the rise of massive data centers, pharmaceutical hubs, and automated cold-chain logistics, fire-rated PIR panels are no longer optional—they are a regulatory requirement. In Europe and North America, FM Global and CE certifications are the gatekeepers for insurance compliance.
Our PIR core exhibits "charring" behavior when exposed to flame. Instead of melting and dripping (which spreads fire), the surface forms a carbonized protective layer, significantly slowing heat transfer and maintaining structural integrity during critical evacuation windows.
Energy efficiency is the second pillar of PIR. With a thermal conductivity as low as 0.019 - 0.022 W/m·K, these panels reduce HVAC energy consumption by up to 40% compared to traditional brick or lower-grade foam materials.
Shaanxi YuanShengHeTong Refrigeration Equipment Co., Ltd. is a titan in the industry, focusing on high-integrity insulation panels and refrigeration technology since 1996. With over 27 years of deep-rooted experience, we have mastered the "One-Stop Project Solution" model.
| Property | Standard PUR Panel | High-Performance PIR (Our Spec) | Mineral Wool |
|---|---|---|---|
| Thermal Conductivity (W/m·K) | 0.024 - 0.026 | 0.019 - 0.022 | 0.035 - 0.040 |
| Fire Rating (EN 13501-1) | Class B2 / B3 | Class B1 / B-s1, d0 | Class A (Non-combustible) |
| Compressive Strength | 120 - 150 kPa | > 180 kPa | 60 - 100 kPa |
| Density (kg/m³) | 38 - 40 | 42 - 45 (Optimal Stability) | 100 - 120 |
Located in the heart of China’s industrial belt, we source premium steel coils and chemical components with zero logistical lag. This allows us to offer Factory Direct Pricing without compromising on raw material quality.
Our 2020-commissioned automatic production line ensures millimeter-perfect "Cam-Lock" tongue-and-groove joints. This precision eliminates thermal bridging, a common failure point in manual panel assembly.
As experienced exporters, we understand global logistics. From specialized sea-worthy packaging to CE/ISO documentation, we ensure your project stays on schedule, whether you are in Southeast Asia, the Middle East, or Europe.
Our founder started the business from refrigeration equipment marketing and installation.
With our first factory completed in Shaanxi, we produced our first cam-lock sandwich panels.
The second factory in LanZhou completed, our business started to cover the whole north-west market in China.
Shaanxi factory relocated to 120 acres with 8 advanced workshops to meet international demand.
Input our first automatic split-joint production line, revolutionizing insulation panel precision.
Second advanced automatic line commissioned, reaching peak productivity and quality control.
Transformation into an eco-friendly factory, aligning with global sustainability and carbon-neutral goals.
Maintaining +/- 0.5°C stability for vaccine storage requires the airtight precision of our Cam-lock PIR panels, ensuring no thermal leakage and strict hygiene control.
Our panels feature food-grade surface coatings (PET/PVDF) that withstand rigorous chemical cleaning while the PIR core provides essential fire safety in oil-intensive cooking areas.
For high-bay warehouses, structural strength is key. Our high-density PIR panels offer the required load-bearing capacity for spanning large vertical heights.
PIR (Polyisocyanurate) is a high-temperature version of PUR. It has better fire resistance because the isocyanurate molecules are more difficult to break down, forming a protective char layer instead of burning quickly.
Our panels are tested in accredited laboratories to meet CE (EN 13501) and GB8624 standards. We provide official test reports with every batch to ensure compliance for insurance and safety audits.
Yes. Our seamless PIR insulated exterior wall panels are designed with weather-resistant steel skins (AZ150 or PVDF) that resist UV degradation and corrosion for 25+ years.
Due to our dual-line automated production, we can usually fulfill standard orders within 15-21 days. Custom specifications or very large volumes may require up to 30 days.
YuanShengHeTong
