Kingflex
Kingflex
Direct supply from state-of-the-art Chinese manufacturing facilities. Premium high-density structures conforming to international BS 476, ASTM, and CE compliance frameworks.
Kingflex Insulation Co., Ltd. is a professional manufacturing and trading combo for thermal and sound absorbing insulation products. Our core research, development, and advanced production facility is located in Dacheng, China—historically celebrated as the global capital of green-building materials. As an energy-saving, environmentally friendly enterprise, we concentrate on the development, high-volume production, and international sales of advanced elastomeric polymers.
In our daily operations, Kingflex implements energy saving and consumption reduction as core design mandates. We provide integrated solutions covering architectural and industrial insulation through technical consultation, tailored R&D, expert installation guidance, and dedicated post-sale service. We strive to lead the development of the global building materials and energy conservation industries.
Kingflex was established by the Jinwei Group (also known as Kingway Group), which possesses a distinguished history of over 40 years in high-performance insulation. Founded in 1979, Kingway Group was the first pioneer manufacturer of thermal insulation materials located north of the Yangtze River.
Decades of continuous process improvement have enabled Kingflex to scale production while preserving the durability of our closed-cell NBR/PVC elastomeric formulations. Our historical expertise provides the foundation for our current market leadership in thermal efficiency and acoustic dampening.
Our employees bring unique capabilities, and together they make Kingflex an innovative place to work. The Kingflex team is a collaborative, talented group with a shared vision of delivering class-leading acoustic and thermal service for our global clients.
Our manufacturing and engineering capability is supported by:
How closed-cell and open-cell elastomeric structures achieve simultaneous acoustic attenuation and thermal barriers.
Modern noise control requires materials that handle both airborne sound transmission and structural vibration. Kingflex Sound Absorbing Insulation utilizes a specialized elastomeric polymer matrix that converts acoustic wave energy into heat energy through visco-elastic friction.
Our Open-Cell NBR/PVC Foam (10mm thickness) is optimized for acoustic absorption. When sound waves hit the material, they enter a complex network of interconnected air passages. The friction between the moving air molecules and the pore walls dissipates high-frequency noise, yielding a high Noise Reduction Coefficient (NRC). Conversely, our Closed-Cell NBR Foams function as vibration dampers and sound barriers, preventing low-frequency transmission through mechanical walls and metal air ducts.
The insulation industry is transitioning toward low environmental impact, higher safety ratings, and broader operating temperatures. Kingflex's engineering path centers on three pillars:
Transitioning to low-GWP (Global Warming Potential) and zero-ODP (Ozone Depletion Potential) foaming chemistry to satisfy global green building regulations.
Incorporating aerogel matrices into flexible rubber structures to produce slim profiles with thermal conductivities below 0.030 W/(m·K) at ultra-low temperatures.
Developing flame-retardant structures that meet BS 476 Part 6 & 7 and UL94 V-0 requirements, minimizing toxic smoke during fire incidents.
Detailed performance parameters for our flexible NBR/PVC elastomeric sheet rolls and insulation pipes.
| Material | NBR / PVC Elastomeric Polymer |
| Thickness | 6mm - 50mm |
| Density | 40 - 55 kg/m³ |
| Service Temp. Range | -40℃ to 105℃ |
| Closed-Cell Rate | > 98% for excellent moisture barrier |
| Resilience | Compression resilience over 80% |
| Material | NBR / PVC Elastomeric Polymer |
| Thickness | 9mm - 40mm |
| Inner Diameter (ID) | 6mm - 114mm |
| Density | 40 - 55 kg/m³ |
| Service Temp. Range | -40℃ to 105℃ |
| Production Method | Precision extrusion with uniform skin coating |
Understanding the commercial dynamics shifting global demand toward high-performance elastomeric insulation.
Commercial building operators, industrial plant managers, and HVAC engineers face escalating challenges regarding energy conservation, acoustics, and indoor air quality (IAQ). Modern standards like ASHRAE 90.1, EU Building Performance Directives, and green certifications (such as LEED and BREEAM) require building envelopes and mechanical systems to maintain strict thermal controls and low noise levels.
In high-density commercial developments (such as shopping malls, hotels, and hospitals), mechanical systems like air handling units, duct networks, and water piping systems are primary sources of low-frequency noise. Left untreated, these vibrations propagate through structural elements, causing discomfort. Using Kingflex sound absorbing insulation on HVAC duct walls and piping networks serves a dual purpose: it reduces energy loss and dampens structure-borne noise before it reaches occupied spaces.
Furthermore, in specialized environments like petrochemical processing facilities and data centers, cold-line insulation must prevent condensation and subsequent corrosion under insulation (CUI). High-density, closed-cell NBR structures provide a robust moisture barrier, extending system lifespans to 10–15 years and reducing operational maintenance costs.
How and where Kingflex insulation is deployed to solve real-world acoustic, thermal, and mechanical issues.
Provides thermal barrier performance and internal sound absorption for large air ducts in retail malls, commercial offices, and airports. Prevents duct drumming and limits thermal loss.
Specialized elastomeric solutions (like Dolefin and Dienes) engineered for ultra-low temperature piping. Prevents pipe cracking, blocks moisture, and limits energy loss in cryogenic storage.
Applied within double-stud walls and architectural ceiling gaps in hotels and hospitals. Minimizes sound transmission (improving STC ratings) between private rooms.
Prevents surface condensation on cold water piping in humid environments, reducing structural corrosion, dripping damage, and mold growth risk.
Reduces engine cabin noise and vibration transmission in railway transit systems, automotive soundproofing setups, and industrial machine enclosures.
Resists UV damage and high temperatures up to 105℃, ensuring piping in outdoor solar water systems retains thermal energy across seasons.
Operating from Dacheng, China—the central industrial cluster for green thermal materials—Kingflex leverages strong raw material supply networks, low lead times, and logistical advantages. This integration enables consistent quality, stable pricing, and rapid delivery for international projects.
With 5 large automated assembly lines, Kingflex maintains an annual production capacity of over 600,000 cubic meters. This continuous process reduces thickness variations and ensures uniform foam expansion across large orders.
Kingflex is a designated production enterprise recognized by the Ministry of Energy, the Ministry of Electric Power, and the Ministry of Chemical Industry in China. This status reflects our compliance with national industrial standards and safety regulations.
Located near major international ports, Kingflex ensures efficient shipping logistics, export clearance, and order traceability. This structure supports secure transit to partners across 66+ countries.
Complete product range including elastomeric rubber foams, cryogenic protection, and industrial rock wool systems.
Ensuring compliance with international engineering, toxicity, and flame-spread safety regulations.
We work directly with contractors and engineering distributors globally. Below are actual communication screenshots showing verified material acceptance and project approvals.
Kingflex insulation is used across commercial HVAC setups, heavy industrial facilities, and municipal construction projects globally.
Answers to common questions about specifications, chemical compatibility, and installation standards.
Elastomeric rubber foam insulation is primarily used for insulating commercial HVAC ducts, air conditioning piping networks, building walls, ceilings, and industrial pipelines. Its closed-cell structure prevents energy loss and condensation while dampening structure-borne vibration and mechanical noise.
Yes. Our formulations contain active flame-retardant additives. Our products meet international safety standards, including BS 476 Part 6 & 7 (Class 0/Class 1) and UL94 V-0 flame ratings, limiting flame spread and smoke generation in commercial building projects.
Elastomeric Rubber Foam is flexible, has a closed-cell structure, and resists moisture penetration. It is ideal for HVAC, chilled water systems, and low-to-medium temperature applications.
Rock Wool Insulation is a fibrous mineral material designed for high-temperature resistance and fire protection in industrial ovens, high-pressure steam pipes, and structural walls.
Yes. We offer customized manufacturing services, adjusting dimensions, densities, wall thicknesses, adhesive backings, and surface coatings to meet specific project guidelines.
Our products have passed BS 476, CE, REACH, RoHS, UL94, and ASTM testing, ensuring compliance with environmental, structural, and fire safety standards globally.
Yes. Every batch of Kingflex insulation is documented, from raw polymer mixing through extrusion and warehousing, supporting quality assurance and site inspections.
We manufacture flexible sheet rolls in thicknesses ranging from 6mm to 50mm to accommodate various thermal barrier and acoustic requirements.
Under normal operating conditions and with proper installation, our rubber foam products maintain performance for 10 to 15 years, resisting degradation and moisture ingress.
Explore our wider range of thermal protection, self-adhesive sheets, and flexible cryogenic elastomeric barriers.
