Comparative Review (Pure Industrial, Theme L: PIR vs PU Sandwich Panel)
PIR Sandwich Panel VS PU Sandwich Panel Full Comparison 📊
| Comparison Item | PU Sandwich Panel | PIR Sandwich Panel |
|---|---|---|
| Core Material Composition 🔬 | Polyurethane foam, standard polyol‑isocyanate formula | Polyisocyanurate foam, high isocyanate index modified polyurethane foam |
| Fire Performance 🔥 | Typical Class B2‑B1 self‑extinguishing; melts under sustained high‑temperature flame, generates moderate smoke | Typical Class B1, better flame retardancy; lower smoke release, keeps partial structural integrity under fire, less molten dripping |
| Thermal Conductivity ❄️ | 0.022‑0.025 W/(m·K), outstanding insulation performance | 0.020‑0.023 W/(m·K), slightly better insulation especially under sub‑zero cold‑storage working condition |
| High‑Temperature Resistance 🌡️ | Long‑term working temperature ‑50℃ ~ +100℃; performance drops obviously above 100℃ | Long‑term working temperature ‑50℃ ~ +120℃; superior thermal stability under continuous high‑temperature environment |
| Closed‑cell & Damp‑proof 💧 | High closed‑cell rate, excellent anti‑condensation and moisture‑proof property | High closed‑cell rate, equal moisture‑proof performance compared with qualified PU sandwich panel |
| Mechanical Strength ⚙️ | Good bonding strength, anti‑delamination, stable for general factory wall & roof | Slightly higher compression strength, better dimensional stability under large temperature fluctuation |
| Raw‑material Cost 💰 | Lower unit cost, widely stocked by most Chinese manufacturers | 12‑22% higher cost than ordinary PU sandwich panel, stricter production process requirements |
| Supply Availability 🚚 | Mass production, short lead‑time, easy for urgent order arrangement | Limited mass capacity for high‑quality PIR; strict formula control, lead‑time will be extended for large‑volume orders |
| Core Advantages ✅ | Cost‑effective, mature production, stable insulation for conventional industrial projects | Better fire‑safety, lower smoke emission, superior high‑temperature stability, higher energy‑saving efficiency for cold storage |
| Main Drawbacks ❌ | Fire performance cannot meet strict European & Middle‑East fire codes; poor stability under long‑term over‑heat condition | Higher purchase cost; many low‑grade counterfeit PIR sandwich panel exist in market |
| Ideal Application 📍 | Ordinary warehouse, general factory wall & roof, medium‑temperature cold‑storage, projects with moderate fire requirements | Tropical high‑heat factory, low‑temperature cold‑storage, overseas projects with strict fire regulations, high‑end industrial enclosure |
Market‑Product Objective Analysis 📋
Standard PU sandwich panel is the mainstream insulated solution for global industrial buildings. Mature manufacturing technology guarantees stable quality for most warehouse and factory projects. But ordinary PU sandwich panel may fail fire‑code inspection in regions with strict fire standards, and foam aging will accelerate under continuous high‑temperature exposure.
Many suppliers claim their products are PIR sandwich panel, while they only add common flame retardant inside ordinary PU foam without real PIR chemical modification. These fake PIR sandwich panel cannot reach expected fire‑resistance and high‑temperature stability. Real PIR sandwich panel needs complete fire‑test certification for verification.
Scenario‑Oriented Buying Advice 🎯
- General warehouse, ordinary factory wall & roof, budget‑limited overseas project: Select PU sandwich panel. It delivers balanced insulation performance and competitive price, SAMZOON can support fast production and free sample inspection for your project.
- Cold‑storage project, tropical high‑temperature area, projects under strict overseas fire‑code: Select PIR sandwich panel. Improved fire‑safety and thermal stability help reduce long‑term operation risk. Confirm formal fire‑test reports before placing mass order.
- Export to Middle‑East, European and other high‑standard markets: Verify local fire classification requirement first. Do not simply rely on supplier’s oral statement for PIR sandwich panel performance.
Brand Note
As Foshan local source manufacturer, SAMZOON supplies both PU sandwich panel and genuine PIR sandwich panel. We provide technical parameter confirmation, third‑party test‑report support and remote project‑selection guidance for global industrial buyers.
Purchasing Reminder ⚠️
Do not judge PIR sandwich panel only by price. Verify core‑foam formula description, official fire‑test report and thermal‑conductivity test data. For high‑temperature or cold‑storage projects, sample testing before bulk order is strongly recommended.
