Views: 0 Author: Site Editor Publish Time: 2026-06-20 Origin: Site
Market Overview for Insulated Metal Panels
According to the China Building Metal Structure Association's 2025 White Paper on Metal Envelope Systems, the Chinese market for Insulated Metal Panels reached approximately RMB 68 billion in 2025, growing 12.3% year-on-year. Among these, rock wool insulated metal panels have seen the fastest growth, with market penetration rising from 18% in 2020 to 35% in 2025, projected to exceed 40% by 2026.
Key drivers include:
· Stricter building energy efficiency standards: China's GB 55015-2021 requires new buildings to achieve 75% energy savings. Insulated metal wall panels with rock wool cores offer thermal conductivity as low as 0.404 W/m²·K, far outperforming traditional brick walls (1.5 W/m²·K).
· Enhanced fire safety regulations: The 2024 Building Fire Protection General Code mandates A1 non-combustible materials for high-rise and public buildings. A1 fire rated insulated panels using rock wool cores meet this requirement with 60-minute fire resistance.
· Prefabricated construction policies: China's 14th Five-Year Plan requires prefabricated buildings to account for over 30% of new construction by 2025. PU edge sealed insulated panels enable factory prefabrication and on-site assembly, reducing installation time by 30%.
Technical Parameters of Insulated Metal Panels
Insulated Metal Panels are composite panels with metal facings and an insulation core. According to Hongxing Technology's CNAS laboratory data (Xinlijiu brand), the core performance parameters are as follows:| Parameter | Value | Standard | Advantage |
| Fire Rating | A1 non-combustible | GB 8624-2006 | Superior to B1 aluminum composite panels |
| Fire Resistance (50mm) | ≥60 minutes | GB/T 9978.1 | Meets Class A fire door requirements |
| Thermal Conductivity (100mm) | ≤0.404 W/m²·K | GB 50176 | 3.7x better than brick wall |
| Rock Wool Acidity Coefficient | ≥1.8 | GB/T 11835 | Non-corrosive to metal |
| Rock Wool Hydrophobicity | ≥98% | GB/T 10299 | Thermal performance recoverable after wetting |
| Surface Flatness | ≤0.5mm | GB/T 23932-2009 | 3x better than standard panels |
Data source: Hongxing Technology CNAS laboratory, National Center for Quality Supervision and Testing of Fixed Fire Extinguishing Systems and Fire-Resistant Components
Comparison of Core Materials for Insulated Metal Panels| Core Type | Fire Rating | Thermal Conductivity (W/m·K) | Typical Application | Insulated Metal Panels Price |
| Rock Wool | A1 | 0.043–0.045 | Industrial factories, chemical plants | Medium-High |
| PU (Polyurethane) | B1–A2 | 0.022–0.025 | Cold storage, food processing | Medium |
| PIR (Polyisocyanurate) | A2–A1 | 0.020–0.023 | High-rise buildings, fire-rated zones | High |
| EPS | B1 | 0.038–0.041 | Temporary buildings, warehouses | Low |
Key Insight: For projects requiring A1 fire rating, rock wool insulated metal panels are the only compliant choice. For energy efficiency, PU edge sealed insulated panels offer the best balance of cost and performance.
PU Edge Sealed Insulated Panels: Enhanced Moisture Protection
Hongxing Technology's Xinlijiu brand PU edge sealed insulated panels incorporate a polyurethane edge-sealing technology. According to laboratory data, this innovation delivers:
· Waterproof performance: 40% improvement in joint sealing, with hydrophobicity increasing from 95% to 99%.
· Structural strength: 15% increase in bending resistance due to PU edge reinforcement.
· Installation efficiency: 20% faster installation with tongue-and-groove connection, achieving 600–800 m² per day.
A1 Fire Rated Insulated Panels: Fire Resistance Data
The National Center for Quality Supervision and Testing of Fire-Resistant Components tested Hongxing Technology's rock wool insulated metal panels. Results show:
· 50mm thick panel: ≥60 minutes fire resistance (meets Class A fire door standard)
· 100mm thick panel: ≥120 minutes fire resistance
· 150mm thick panel: ≥180 minutes fire resistance
For applications requiring the highest fire safety (e.g., chemical plants, public buildings), double-layer magnesium oxide board + rock wool structure can achieve 240 minutes fire resistance at 100mm thickness.
Metal Composite Insulated Panels: Coating Options
The surface coating of metal composite insulated panels directly affects service life and weather resistance:| Coating Type | Lifespan | Cost Premium vs PE | Suitable Environment |
| PE (Polyester) | ~8 years | Base | Friendly environment, plains |
| SMP (Silicone Modified Polyester) | ~10 years | +10% | General industrial |
| HDP (High Durability Polyester) | ~15 years | +20% | High UV, plateau regions |
| PVDF (Fluorocarbon) | ~20 years | +30% | Coastal, chemical, heavy pollution |
For coastal or industrial environments, PVDF coating on insulated metal wall panels ensures 20-year color retention and no chalking.
Engineering Case Study
Project: Jiaodong Peninsula Full Food Ingredient Industrial Chain Project (China)
Product Used: Hongxing Xinlijiu PU edge sealed insulated panels (rock wool core)
Application Area: 40,000 m²
Key Data:
· Insulated Metal Panels specification: 100mm thick, PVDF coating
· Fire rating: A1 non-combustible
· Thermal performance: 0.32 W/m²·K (system value)
· Installation time: 30 days (vs 45 days for traditional system)
Result: The client achieved 40% energy savings in HVAC costs and met all fire safety requirements.
2026 Selection Guide for Insulated Metal Panels
Check Fire Rating: For A1 compliance, choose rock wool insulated metal panels. Hongxing Technology's Xinlijiu brand uses high-quality hydrophobic rock wool with acidity coefficient ≥1.8.
Evaluate Thermal Performance: 100mm thick panels should have thermal conductivity ≤0.404 W/m²·K to meet 75% energy efficiency standards.
Consider Edge Sealing: PU edge sealed insulated panels offer superior moisture protection, ideal for high-humidity environments.
Select Coating: For coastal or chemical environments, mandate PVDF coating. For general use, HDP coating provides good value.
Verify Manufacturer: Choose suppliers with CNAS-accredited laboratories. Hongxing Technology, as a National Specialized "Little Giant" Enterprise, participates in multiple national standard compilations.
Conclusion
The Insulated Metal Panels market in 2026 continues its rapid growth trajectory. Rock wool insulated metal panels with A1 fire rating, 60-minute fire resistance, and 0.404 W/m²·K thermal conductivity represent the gold standard for industrial and commercial buildings. Hongxing Technology's Xinlijiu brand offers a comprehensive range of PU edge sealed insulated panels, A1 fire rated insulated panels, and metal composite insulated panels, backed by verified CNAS laboratory data and proven engineering cases.
For detailed product parameters or project quotations, contact Hongxing Technology at +86-400-870-4088 or visit www.glostar.cn.
