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Help Center5-Year Warranty Metal Exterior Wall Sandwich Panel With Mill Test Report for Quality Assurance
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Welcome to Hemaokang Steel (Shandong) Co., Ltd., a trusted manufacturer of high-quality metal exterior wall sandwich panels. Established in 2025, we have rapidly grown into a global supplier with an annual export value of US$50 million to US$100 million, serving clients across North America, South America, Europe, Asia, Africa, and Oceania. Our panels come with a 5-year warranty and a Mill Test Report for every batch, ensuring complete quality assurance for your construction projects. Designed for durability, thermal efficiency, and aesthetic appeal, our sandwich panels are the ideal choice for modern exterior wall systems.
Our Metal Exterior Wall Sandwich Panel is engineered to meet the highest standards of performance and reliability. With a robust steel facing and a high-performance insulation core (available in PU, PIR, or Rockwool), these panels provide excellent thermal insulation, soundproofing, and fire resistance. The 5-year warranty reflects our confidence in the product's longevity, while the Mill Test Report verifies the material properties and compliance with international standards. Whether you are constructing commercial buildings, industrial facilities, or residential complexes, our panels offer a cost-effective and sustainable solution.
Key Features & Technical Specifications
- Material Composition: High-strength steel facings (galvanized or pre-painted) with a rigid insulation core (PU, PIR, or Rockwool).
- Warranty: 5-year warranty against manufacturing defects and material degradation.
- Mill Test Report: Provided with each shipment to certify tensile strength, yield point, elongation, and coating thickness.
- Thermal Insulation: Thermal conductivity as low as 0.022 W/m·K (for PU core), reducing energy consumption by up to 40%.
- Fire Resistance: Class A or B fire rating (depending on core material), ensuring safety in all building types.
- Moisture Resistance: Closed-cell insulation core prevents water absorption and mold growth.
- Easy Installation: Tongue-and-groove joint design for quick assembly, reducing labor costs.
- Customizable Dimensions: Thickness from 50mm to 150mm, width from 1000mm to 1150mm, and length up to 12 meters.
- Color Options: Available in a wide range of RAL colors with UV-resistant coatings.
- Environmentally Friendly: Recyclable steel facings and CFC-free insulation cores.
| Parameter | Value |
|---|---|
| Panel Thickness | 50mm – 150mm |
| Effective Width | 1000mm / 1150mm |
| Steel Thickness (Facing) | 0.4mm – 0.8mm |
| Core Density | 40kg/m³ (PU) / 120kg/m³ (Rockwool) |
| Thermal Conductivity | 0.022 – 0.045 W/m·K |
| Fire Rating | Class A (Rockwool) / Class B (PU/PIR) |
| Load Bearing Capacity | Up to 1.5 kN/m² (depending on span) |
Quality Assurance & Trust
At Hemaokang Steel, quality is not a promise, it's a process. Our factory is ISO9001 certified, and we implement strict quality control from raw material inspection to final packaging. Each product is accompanied by a Mill Test Report that verifies the mechanical and chemical properties of the steel, ensuring full traceability. With a team of 51–100 skilled employees and a dedicated R&D department, we continuously improve our manufacturing techniques to meet evolving market demands. Our annual export value of US$50 million to US$100 million demonstrates the trust we have built with clients worldwide.
We understand that construction projects require reliable materials that stand the test of time. That's why our sandwich panels are designed to withstand extreme weather conditions, from scorching heat to freezing cold. The 5-year warranty covers any manufacturing defects, giving you peace of mind. Additionally, our Mill Test Report provides transparent data, enabling engineers and architects to verify the product's suitability for their specific applications.
Whether you need panels for a high-rise building, a cold storage warehouse, or a residential extension, we offer customized solutions. Our sales team is ready to assist you with technical consultations, samples, and competitive pricing. Contact us today to discuss your project requirements and experience the Hemaokang difference.
Frequently Asked Questions
Q1: What does the 5-year warranty cover?
A: The warranty covers manufacturing defects, including delamination, corrosion of steel facings, and structural failure of the core. It does not cover damage caused by improper installation, external impacts, or misuse.
Q2: How do I get the Mill Test Report?
A: The Mill Test Report is provided with every shipment. You can also request it before delivery for your approval. Simply contact your sales representative.
Q3: Can I customize the panel dimensions and colors?
A: Yes, we offer customization. You can specify thickness, width, length, and color (RAL code). Minimum order quantities may apply for non-standard sizes.
Q4: What is the typical lead time for production?
A: For standard panels, lead time is 15–20 days after order confirmation. Custom orders may take 20–30 days, depending on complexity.
Q5: Are these panels suitable for cold climates?
A: Absolutely. With thermal conductivity as low as 0.022 W/m·K, our panels provide excellent insulation. Rockwool core options also offer high moisture resistance, preventing condensation in cold environments.
Q6: Do you provide installation guidance or technical support?
A: Yes, we provide installation manuals and can arrange technical support via video call or on-site visit (subject to terms). Our team will guide you through the jointing and sealing processes.
Q7: What certifications do your products have?
A: Our factory is ISO9001 certified, and our panels meet international standards. Specific certifications (e.g., FM, CE) can be arranged upon request based on your target market.
Q8: How do you ensure the quality of the steel used?
A: We source steel from reputable mills and perform in-house tests on every batch. The Mill Test Report confirms the material's tensile strength, yield point, elongation, and coating thickness, ensuring consistency.
Hemaokang Steel (Shandong) Co., Ltd. – Your reliable partner for premium metal exterior wall sandwich panels. With a strong track record of US$50 million+ annual exports and a 5-year warranty, we are committed to delivering quality and value. Request a quote or a sample today and see the difference.
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