Product Positioning
EPS Sandwich Panel is a prefabricated enclosure material designed for steel structure buildings where speed, cost control, and thermal performance are key engineering requirements.
It is widely used in international EPC and steel structure projects as an alternative to brick walls and single-skin metal sheets, especially in large-area industrial buildings.
Technical Specifications
|
Parameter |
Value |
|
Panel Type |
EPS Sandwich Panel |
|
Steel Thickness |
0.3–0.8 mm |
|
Core Thickness |
50 / 75 / 100 / 150 mm |
|
Density |
8–20 kg/m³ |
|
Effective Width |
950 / 1000 mm |
|
Max Length |
Up to 12 m |
|
Coating |
PE / SMP / PVDF |
|
Fire Rating |
B2 standard / B1 optional |
|
Thermal Conductivity |
0.035–0.041 W/m·K |
Functional Engineering Performance
Thermal Performance
EPS core reduces heat transfer through the building envelope, helping stabilize indoor temperature in steel structure facilities.
Structural Weight Efficiency
Compared to brick or concrete wall systems, EPS panels significantly reduce envelope weight, which directly affects structural design.
Installation Efficiency
Panels are designed for dry construction installation:
- Fixed directly onto steel purlins or wall girts
- Installed using self-drilling fasteners
- Sealed at joints with accessory systems
No wet construction or curing process is required, improving on-site construction efficiency.
Environmental Durability
EPS foam has a closed-cell structure with low water absorption. Combined with coated steel sheets, it provides stable performance in normal industrial environments when properly installed.
Application Engineering Scenarios
Industrial Facilities
Used in production plants requiring fast construction and cost-controlled building envelopes.
Logistics Infrastructure
Applied in warehouses and distribution centers where large-span space and energy efficiency are required.
Agricultural Buildings
Suitable for storage buildings and livestock facilities with basic insulation requirements.
Modular Construction
Used in temporary or prefabricated buildings such as site offices and construction camps.
Panel Composition
Outer Steel Sheets
Pre-painted galvanized steel (PPGI) / galvanized steel (GI)
Zinc coating: Z100–Z275
Surface finish: Smooth / embossed / protective film optional
Function: Mechanical protection and weather resistance
EPS Core Insulation Layer
Expanded polystyrene rigid foam
Density range: 8–20 kg/m³ (project-dependent)
Function: Thermal insulation + weight reduction
Continuous Bonding System
Hot-press lamination process
Full-surface adhesive bonding
Designed for long-term structural stability during transport and installation
EPS vs Rockwool vs PU
|
Property |
EPS |
Rock Wool |
PU |
|
Weight |
Low |
Medium |
Low |
|
Thermal Performance |
Good |
Good |
Excellent |
|
Fire Resistance |
Medium |
High |
Medium |
|
Cost Efficiency |
High |
Medium |
Low |
|
Installation Speed |
Fast |
Medium |
Fast |
Manufacturing Process
Production follows a continuous industrial lamination process:
- Steel coil inspection and coating verification
- EPS foam expansion with density control
- Hot-press lamination bonding process
- Cooling and structural stabilization
- Precision cutting according to project dimensions
- Surface and dimensional inspection
- Export packaging preparation
International Shipping & Packaging Safeguards
Heavy-Duty Structural Bundling: Mounted on heavy timber or foam runners to handle rough seaport forklift operations.
Edge & Interlocking Protection: High-density corner guards prevent male/female joint deformation during high-sea vessel movement.
Container Cubage Optimization: Tailored packing configurations calculated by custom loading software to maximize 40' HQ weight/volume metrics, driving down global shipping costs per square meter.
The Wanxiang Procurement Advantage
High-Volume Continuous Output
Supported by a daily manufacturing capacity of 10,000+ square meters, assuring consistent batch runs for mega-scale industrial structures without mid-project supplier delays.
Consolidated Mixed Loading
Ability to engineer and load multi-specification wall panels, roof panels, and matching flashings within a unified, sequential shipping manifest mapped to your on-site erecting phases.
Full Compliance Documentation
Comprehensive provision of Mill Test Certificates (MTC), bills of quantities, loading reports, and country-of-origin legalization required for international EPC custom clearances.
Certificates





FAQ
Q: Can EPS panels be used in high-temperature regions?
A: Yes, with appropriate steel coating selection and structural design adjustments.
Q: How do you ensure consistency across large orders?
A: Through batch-controlled raw material sourcing and continuous production line monitoring.
Q: Can panels be used in EPC or government projects?
A: Yes, depending on project specification requirements and fire rating standards.
Q: What is your production capacity for large projects?
A: Capacity can be scaled to meet multi-container EPC project requirements.
Q: Can you support urgent delivery schedules?
A: Yes, depending on order volume and production scheduling.
Q: How is shipping damage prevented?
A: Through reinforced packaging, edge protection, and optimized container loading design.
Q: Do you provide installation guidance?
A: Yes, technical installation documents can be provided for project execution support.
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