Product Overview
Industrial Rock Wool Sandwich Panel is a high-performance prefabricated building envelope system consisting of two pre-painted galvanized steel sheets bonded to a high-density basalt rock wool insulation core.
It is engineered for industrial, commercial, and infrastructure projects requiring strict fire safety compliance, thermal efficiency, and acoustic control.
Unlike EPS or PU/PIR insulation panels, rock wool panels are non-combustible (A1 fire-rated) and meet the requirements of fire-sensitive industrial environments and international EPC standards.
Technical Specifications
|
Item |
Specification |
|
Panel Thickness |
50 / 75 / 100 / 120 / 150 / 200 mm |
|
Effective Width |
950 / 1000 / 1150 mm |
|
Steel Thickness |
0.4 – 0.8 mm |
|
Core Density |
80 – 120 kg/m³ |
|
Thermal Conductivity |
≤ 0.043 W/m·K |
|
Fire Performance |
A1 Non-combustible (EN 13501 equivalent) |
|
Length |
Customized (project-based) |
|
Surface Finish |
Polyester / PVDF coating |
|
Color |
RAL color system |
Key Advantages
A1 Structural Fire Safety
Non-combustible core derived from natural basalt. Zero flame spread, zero ignition point, and zero toxic smoke emissions under extreme temperatures, preserving building structural integrity during fire events.
Engineered Load-Bearing Capacity
High rigidity and superior shear/compressive strength, making it ideal for large-span industrial buildings and high wind-pressure zones.
Thermal Insulation Efficiency
Exceptionally low thermal conductivity significantly reduces building heat gain/loss, optimizing HVAC energy efficiency.
Industrial Acoustic Control
Outstanding sound absorption capacity that dampens heavy machinery noise and improves workshop environmental comfort.
Green Building Compliance
Formulated from fully recyclable natural mineral fibers, contributing to LEED and green building certifications.
Applications
Petrochemical & Energy
Oil & gas refinery workshops, power generation facilities, and hazardous material storage.
01
Heavy Manufacturing
Steel structure factories, automotive assembly plants, and heavy machinery workshops.
02
Logistics & Infrastructure
Mega distribution centers, airport logistics hubs, and railway freight terminals.
03
Controlled Environments
Pharmaceutical GMP cleanrooms and high-tech electronic data centers.
04
Safety Partitioning
High-rise firewall divisions and internal fire-rated partition walls.
05
Cross-Sectional Product Structure
Outer Facing: High-tensile pre-painted galvanized/galvalume steel sheet (PPGI/PPGL) with optional PVDF/HDP coatings for harsh industrial weatherproofing.
Core Material: Premium high-density structural rock wool slabs (slat orientation perpendicular to steel skins for maximum bending strength).
Inner Facing: Light-grooved or flat galvanized steel sheet with an anti-corrosion protective finish.
Bonding Matrix: Continuous multi-component high-strength polyurethane adhesive combined with computer-controlled pressure lamination.
Quality Control System
Every production batch undergoes a 5-stage quality gate check before shipment:
Steel Coil Inspection: Testing coating thickness and yield strength.
1
>>
Core Sampling: Density distribution testing across the panel width.
2
>>
Adhesion Tensile Test: Verification of raw bond strength.
3
>>
Dimensional Scan: Laser-guided length, width, and squareness checks.
4
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International Compliance: Produced under ISO 9001 quality management systems.
5
Customization Options
We offer flexible, tailor-made solutions to meet the exact engineering and design requirements of your project.
Steel Surface & Coating
Material: PPGI, Galvalume, Stainless Steel (SS304/SS316), or Aluminum.
Thickness: 0.3 mm to 0.8 mm.
Coatings:
- PE: Cost-effective for standard indoor/outdoor use.
- SMP: Higher scratch resistance and heat tolerance.
- PVDF: Maximum protection against heavy UV, salt spray, and chemicals.
- Surface Finish: Smooth, Micro-ribbed, Deep-ribbed, or Embossed.
- Colors: Full range of Universal RAL colors.
Panel Dimensions & Core Density
Thickness: 50 / 75 / 100 / 120 / 150 / 200 mm.
Rock Wool Density: 80 kg/m³ to 150 kg/m³.
Length: Custom cut from 2.0m to 11.8m (Optimized for 40ft HQ containers).
Joint & Edge Systems
Tongue & Groove: Standard interlocking for fast, secure alignment.
Hidden Fastener: Conceals all screws for a seamless, premium facade.
PU/PIR Side-Sealing: Adds rigid foam edges to block moisture and increase joint strength.
Branding & Accessories
OEM Support: Custom logo printing on the PE protective film.
Matching Accessories: Custom flashing, ridge caps, and fasteners built to your drawings.
Packaging & Export Security
Heavy-duty PE protective film applied to both steel profiles.
Reinforced edge protectors to prevent transit friction.
Engineered steel pallet bundling optimized for overseas forklift handling.
Precision container loading layout to maximize space utilization and eliminate sea-freight shifting.
Commercial Terms & Logistics
|
Minimum Order Quantity (MOQ) |
500 – 1,000 m² (Flexible project-based consideration available). |
|
Manufacturing Lead Time |
10 – 20 working days from technical drawing approval. |
|
Container Loading Capacity |
Approx. 500 – 900 m² per 40HQ container (Optimized by panel thickness). |
|
International Trade Terms |
FOB / CIF / CFR / EXW. |
|
Payment Framework |
T/T, L/C at sight. |
Why Engineers and Procurement Managers Choose Wanxiang
Advanced Continuous Lines: Operating high-speed, state-of-the-art continuous sandwich panel production lines for uniform density and superior adhesion strength.
EPC-Level Engineering Support: We don't just sell panels; we review your structural drawings to provide optimized structural layouts.
Global Supply Chain Expertise: Years of cross-border logistics experience ensuring seamless customs clearance and on-time job site delivery.
Direct Factory Pricing: Eliminating middle-tier costs to provide direct manufacturing economic efficiency.
Certificates
Frequently Asked Questions
Q: How do your panels differ from residential-grade insulation?
A: We manufacture for heavy industrial applications using high-density basalt rock wool (>80 kg/m³) and structural-grade steel, ensuring the panels do not settle or delaminate over time.
Q: How do you prevent moisture absorption during long-distance sea freight?
A: We offer specialized PU/PIR side-sealing technology, where the edges are fully encased in polyurethane. Combined with industrial-strength waterproof wrapping and reinforced pallets, we ensure zero moisture ingress.
Q: Which international fire codes do your products comply with?
A: Our rock wool is Class A non-combustible. The panels are engineered to achieve fire ratings up to EI 120+ and can be customized to fulfill EN 14509, ASTM, and other regional code requirements.
Q: Which coating is best for coastal or chemical-heavy environments?
A: We highly recommend PVDF (Fluorocarbon) coating for these environments. It provides exceptional resistance to salt-spray corrosion, chemical fumes, and UV exposure, extending the lifespan up to 40 years.
Q: Do you provide structural engineering support?
A: Yes. We don't just supply materials; we provide solutions. Our engineering team assists with panel layout optimization, structural drawing calculations, and technical proposals within 24 hours.
Get Engineering Support & Quotation
Looking for a reliable Rock Wool Sandwich Panel manufacturer for your industrial project?
Wanxiang provides:
Technical drawing support
Engineering proposal within 24 hours
Custom EPC project solutions
Global export logistics service
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