Kingflex
Direct factory supply of certified elastomeric materials ensuring high-resistance fire barriers and exceptional vapor insulation properties.
In mechanical spec writing and structural safety enforcement, the term Class 0 holds critical status. Under British Standard 476 (specifically Parts 6 and 7), Class 0 is not merely a single material classification but a combined fire safety standard. To achieve Class 0 status, an insulation material must demonstrate:
For structural engineers and MEP consultants, utilizing true Class 0 certified closed-cell elastomeric rubber foam reduces flashover risks in high-occupancy zones and commercial air distribution systems, ensuring maximum protection for lives and structural assets.
Combining scientific R&D, state-of-the-art manufacturing lines, and a robust global logistical framework to lead energy-saving building initiatives globally.
Kingflex Insulation Co., Ltd. is a professional manufacturing and trading combo for high-end thermal insulation products. Our R&D and main production facilities are located in Dacheng, China—historically recognized as the capital of green building materials. Strategically focusing on "energy saving and consumption reduction" as our core operating concept, we serve the international market with comprehensive solutions spanning engineering consultation, R&D custom fabrication, installation guidance, and dedicated post-sales support.
Kingflex was established by the prestigious Jinwei Group, which boasts a historical lineage dating back to 1979. As the first thermal insulation material manufacturer north of the Yangtze River, our group's 40+ year development path guarantees deep technical competence and reliable manufacturing continuity.
Our team is a highly integrated collective of engineering talent and trade experts. In our R&D department, 8 professional engineers continuously experiment with polymer modifications to lower thermal conductivity and improve flame retardancy. Alongside them, 6 international sales experts ensure absolute compliance with regional customs and shipping requirements, while 230 trained production personnel maintain strict quality control in our workshops.
Our operational capabilities are backed by 5 large automatic assembly lines, enabling us to exceed an annual capacity of 600,000 cubic meters. Over the decades, Kingflex has achieved the distinction of being a designated production partner for the Ministry of Energy, the Ministry of Electric Power, and the Ministry of Chemical Industry in China.
Detailed dimensional standards and mechanical properties for Kingflex NBR/PVC elastomeric rubber systems.
| Property / Dimension | Black Rubber Foam Sheet Roll Specification | Black Rubber Foam Pipe Specification |
|---|---|---|
| Base Polymer Formulation | NBR/PVC Elastomeric Foam Blend | NBR/PVC Elastomeric Foam Blend |
| Standard Thickness Range | 6mm - 50mm | 9mm - 40mm |
| Inner Diameter (ID) | N/A (Flat sheet form, roll packaging) | 6mm - 114mm (Compatible with global pipe sizes) |
| Density Limits | 40 - 55 kg/m³ | 40 - 55 kg/m³ |
| Operational Temp. Range | -40℃ to 105℃ (Ultra-low option down to -196℃) | -40℃ to 105℃ (Ultra-low option down to -196℃) |
| Closed Cell Structure | >98% Closed-Cell Rate | >98% Closed-Cell Rate |
| Fire Safety Rating | Class 0 & Class 1 (BS 476, UL94 V-0) | Class 0 & Class 1 (BS 476, UL94 V-0) |
| Water Vapor Resistance | High Moisture Resistance Factor (μ ≥ 10,000) | Evenly-sprayed coating prevents ambient vapor infiltration |
An analytical look at supply chain optimization, raw material integration, and high-volume procurement logistics.
Global procurement directors balance cost control, performance margins, and delivery speeds. Choosing a manufacturer located in China's prime green building materials cluster (Dacheng) provides clear structural advantages:
Our solutions target these key concerns for global procurement managers:
1. Strict Standards Compliance: All Kingflex shipments can be supplied with formal testing certificates confirming Class 0/Class 1 flame ratings, REACH environmental compliance, and low RoHS chemical content.
2. Supply Chain Security: Our large warehouse capacity and raw material reserves help mitigate sudden market fluctuations.
3. Comprehensive Customization: We offer tailored densities, custom inner diameters, and optional foil laminations to meet specific project needs.
Thermal materials used in high-density commercial construction and sensitive industrial plants must hold recognized compliance credentials. Kingflex Class 0 and Class 1 materials undergo regular testing in accredited laboratories to verify their properties under critical conditions.
Real-world application of elastomeric closed-cell rubber systems in high-demand construction and industrial projects.
Kingflex insulation materials are used across commercial, industrial, and transportation sectors. The combination of flexible closed-cell structures and certified fire performance makes our products a reliable choice for challenging HVAC and piping installations.
Installed as a vapor barrier and thermal blanket on large central air conditioning ducts to prevent condensation and improve energy conservation.
Provides thermal insulation on low-temperature piping networks in public facilities, reducing pipe corrosion risks.
Applied in chemical processing plants to insulate high-pressure steam pipelines, vessels, and storage systems.
Open-cell and specialized compound rubber variations help absorb high-frequency noise from compressor stations and mechanical plant rooms.
A selection of active construction sites, industrial facilities, and transport installations utilizing Kingflex elastomeric insulation materials.












Detailed specifications for our primary elastomeric, soundproof, and rock wool insulation options.
Standard closed-cell NBR/PVC tube designed for HVAC water and refrigeration lines.
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Outer layer protected against UV, weather, and chemical exposure in industrial environments.
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Highly flexible formulation suitable for complex routing around piping bends and valves.
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Standard mechanical closed-cell tubing with high density walls for condensation control.
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Standard NBR base material providing chemical stability and resistance to oil and moisture.
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Optimized wall thickness profile for building service piping and local split unit systems.
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Designed for ultra-low temperatures, LNG transport pipelines, and industrial cryogenic facilities.
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Formulated to resist low-temperature embrittlement down to -196℃.
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Suitable for industrial gas networks, ethylene lines, and chemical processing facilities.
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Multi-layered thermal system designed for industrial gas processing and transport.
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High-density basalt fibers for structural fire insulation and high-temperature systems.
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Flexible mineral wool wrap for large process ducts, kilns, and plant pipe networks.
View SpecificationsWe work closely with global engineering firms, mechanical contractors, and distributors to ensure our materials meet strict project specifications.
Our sales and technical support teams provide direct updates on lead times, laboratory certifications, and custom dimension capabilities to maintain clear project alignment.
"Kingflex's Class 0 closed-cell rubber sheet met the project requirements for our commercial HVAC installation. The density was consistent, and the batch certification documents were complete."
— Lead MEP Estimator, Commercial Construction, Singapore
Detailed explanations addressing common structural, chemical, and logistics questions about elastomeric insulation.
Direct factory supply of heavy duty and ultra-low temperature cryogenic elastomeric rubber products.
A visual record of quality control steps, automated production stages, and outgoing product configurations.















