Custom B1 Fire Rated PIR Sandwich Panel Factory Supply
Industrial-grade thermal insulation requires a precise balance between fire resistance and structural stability. Our manufacturing facility produces polyisocyanurate (PIR) core panels with high-density cores designed to maintain dimensional integrity under high-stress thermal exposure. For procurement officers managing large-scale construction projects, these panels offer a predictable path to meeting B1 fire standards without the rapid del degradation often seen in standard foam alternatives.
Technical Note: The B1 fire rating is achieved through specific char-forming properties of the PIR foam, which creates a protective barrier when heated, significantly slowing the spread of flame and maintaining the load-bearing capacity of the assembly during thermal events.
Scope of Supply and Physical Form
The performance of a sandwich panel depends on the bond strength between the metal skin and the insulating core. We utilize high-pressure continuous bonding to ensure the steel faces do not delaminate during thermal expansion or mechanical stress cycles. This construction is vital for cold-storage facilities and exterior cladding where moisture ingress is constant.
- Custom core thicknesses ranging from 30mm to 200mm based on thermal U requirements.
- Steel skin gauges from 0.4mm up to 1.5mm, available in galvanized or coated finishes.
- PIR core density controlled between 40kg/m³ and 100kg/m³ for specific structural rigidity.
- Profile options including trapezoidal, flat, or interlocking joints for rapid onsite assembly.
Where This Product Beats Alternatives
Standard insulation foams often fail under prolonged heat exposure due to rapid melting and smoke production. Our PIR formulation is engineered to undergo a chemical reaction that promotes char, protecting the internal structure of the panel. For distributors, this translates to a lower risk profile in regions where fire safety codes are non-negotiable.
Thermal Stability
The PIR core maintains a higher R-value over the life of the building compared to standard EPS, allowing for thinner wall sections with equivalent insulation performance.
Mechanical Strength
High tensile strength in the steel skins reduces the span between supports, minimizing material costs during the construction process.
Comparing Two Configurations
| Parameter | Standard PIR Grade | High-Density B1 PIR |
|---|---|---|
| Core Density | 40-60 kg/m³ | 80-100 kg/m³ |
| Fire Resistance | Standard Flame Retardant | Certified B1 Rating |
| Load Capacity | Moderate | High Structural Rigidity |
Capacity and Lead Time
Lead times are dictated by the custom skin specifications and core volume requirements. For bulk wholesale orders, we align production schedules with your project timelines to prevent onsite storage damage and logistical bottlenecks.
- Technical specification review and drawing approval (3-5 days).
- Material sourcing and core preparation (10-14 days).
- Mass production and quality testing (7-10 days depending on volume).
Packing and Logistics
Panels are secured in protective steel-framed crates to prevent edge scratching during maritime transport. Each bundle is wrapped in moisture-resistant film to ensure the PIR core remains dry during transit to the site.
Questions Buyers Ask
Can the panels be customized with specific architectural rib profiles?
Yes, we offer various profile depths from flat to deep-ribbed trapezoidal to meet aesthetic and structural requirements.
What is the maximum length supported for standard shipping?
Standard containers accommodate lengths up to 12 meters, but oversized lengths can be managed via flat-rack shipping at additional cost.
