Kingflex
Engineered for architectural efficiency, acoustic performance, and severe thermal applications.
As industrial and commercial structures push toward decarbonization under strict ESG metrics (such as LEED, BREEAM, and DGNB), the role of premium closed-cell thermal insulation becomes paramount. Flexible elastomeric foam, primarily formulated from Nitrile Butadiene Rubber (NBR) and Polyvinyl Chloride (PVC), represents a major breakthrough in thermal management.
By trapping clean dry air within an ultra-fine, closed-cell micro-structure, this material acts as an exceptional thermal barrier. Thermal conductivity ($\lambda \le 0.034$ W/(m·K) at 0°C) is maintained consistently over decadal spans, preventing condensation on chilled water pipes and HVAC ductwork without the degradation risks typical of fibrous insulation. At the same time, its high moisture resistance factor ($\mu \ge 10,000$) eliminates the need for separate vapor barriers, reducing system weight, installation labor, and risk of Corrosion Under Insulation (CUI).
Meeting strict international test standards is essential for safety and performance in major global projects.
Kingflex materials are designed and tested to achieve Class 0 status under British Standard BS 476 Parts 6 & 7. In addition, they comply with UL 94 V-0 flame-retardant criteria and ASTM E84 surface burning characteristics, ensuring low smoke density and preventing fire propagation.
Our formulations are compliant with REACH and RoHS regulations, meaning they are completely free of hazardous chemicals, dust, fiber, and halogenated ozone-depleting compounds. They also inhibit microbial growth without biocide additives, making them suitable for cleanrooms and medical centers.
To meet the demands of LNG storage, regasification terminals, and Ethylene liquefaction lines, Kingflex manufactures high-density ULT (Ultra-Low Temperature) elastomeric systems. These systems maintain elasticity down to -200°C, absorbing thermal stress and piping vibrations.
Explore technical values, standard sizes, and pricing structures for estimation and project planning.
| Property / Material Type | NBR/PVC Elastomeric Sheet | Foil-Clad Sheet Roll | Standard Insulation Pipe | Cryogenic ULT Foam |
|---|---|---|---|---|
| Mean Temp Thermal Conductivity ($\lambda$) | $\le 0.034$ W/(m·K) at 0°C | $\le 0.035$ W/(m·K) at 0°C | $\le 0.033$ W/(m·K) at -20°C | $\le 0.021$ W/(m·K) at -165°C |
| Water Vapor Permeability ($\mu$) | $\ge 10,000$ | $\ge 20,000$ | $\ge 8,000$ | $\ge 15,000$ |
| Operating Temperature Limits | -50°C to +105°C | -40°C to +110°C | -50°C to +105°C | -200°C to +125°C |
| Density Range (kg/m³) | 40 - 55 kg/m³ | 45 - 60 kg/m³ | 40 - 55 kg/m³ | 70 - 95 kg/m³ |
| Standard Thickness Formats | 6mm, 9mm, 13mm, 19mm, 25mm, 32mm, 50mm | 9mm, 13mm, 19mm, 25mm, 32mm | Wall thickness: 9mm to 40mm; ID: 6mm to 114mm | Multilayer configurations up to 150mm |
| FOB China Indicative Price Range | $1.80 - $4.50 / m² | $3.20 - $7.80 / m² | $0.15 - $2.50 / meter | Contact for custom quotes |
*Note: The prices listed above are indicative and subject to change based on raw material costs (NBR/PVC), custom thickness parameters, order volumes, and regulatory packaging requirements. Contact our sales office for a project-specific formal quote.
Established in 1979 by the Jinwei Group, Kingflex has grown from a regional pioneer to a key global player in green building materials. Located in Dacheng, China—a hub for energy conservation and green insulation research—our company integrates R&D, large-scale automated manufacturing, and global trading services.
Our commitment goes beyond manufacturing. We provide full-service support including technical consultation, customized R&D for specific applications, engineering drawing reviews, on-site installation guidance, and post-installation warranty audits. This complete service portfolio has positioned Kingflex as an approved and designated supplier for major energy projects under the Ministry of Energy, the Ministry of Electric Power, and the Ministry of Chemical Industry.
We believe in high-capacity output without compromising on precision. Kingflex runs 5 high-speed, fully automated assembly lines. These lines feature online thickness monitoring and continuous vulcanization controls, yielding a annual capacity of over 600,000 cubic meters.
Our operations are supported by a specialized team of over 230 workers, including 8 lead R&D chemical engineers and 6 dedicated international sales representatives. By keeping research, quality control, and logistics in-house, we ensure fast turnarounds and consistent quality, helping international distributors secure contracts in competitive local markets.
Our team works closely together to deliver high-quality, reliable products and a seamless service experience for our global clients.
A closer look at our material analysis, mechanical testing, and international quality certifications.
We verify raw polymer quality through gas chromatography and thermal analysis, ensuring consistent density and molecular structure before foaming.
Every batch undergoes thermal conductivity testing under varying temperatures to ensure consistent insulation performance in the field.
Optical monitoring checks cell uniformity, confirming a minimum 98% closed-cell structure to optimize moisture and vapor resistance.
See what our global partners say about Kingflex service quality and product reliability.
Detailed performance data for our core sheets, rolls, and pre-formed pipe sections.
Our elastomeric sheet rolls are designed for large-diameter pipelines, rectangular ducts, storage tanks, and irregular system components.
Extruded, pre-formed elastomeric sleeves designed for copper tube and steel pipe installations.
Our products are used in over 60 countries across construction, chemical, and aerospace industries.
We supply a complete line of insulation materials to suit a wide range of project specifications.
Closed-cell insulation tubes designed to prevent condensation and energy loss in heating, ventilation, and air conditioning piping.
Engineered with protective coatings to shield pipes from chemical exposure and corrosion under insulation (CUI) in harsh environments.
High-flexibility piping insulation designed to bend easily around corners and fittings, reducing cut-and-glue joints.
Cost-effective, high-performance piping insulation suited for municipal HVAC, plumbing, and general commercial construction.
Designed with micro-cell configurations for industrial processing systems requiring strict thermal controls.
Sized specifically to standard copper and steel pipes, minimizing installation gaps on commercial chillers and VRF systems.
Heavy-duty NBR/PVC blends designed for high-stress industrial applications and chemical plant process lines.
Specially formulated for cryogenic service down to -200°C, providing crack-resistant insulation for LNG piping.
Maintains flexibility at extremely low temperatures to absorb thermal expansion and contraction in liquid nitrogen lines.
Multi-layered cryogenic insulation systems designed for marine terminals and transport vessels.
High-density mineral fibers for structural walls and industrial ovens requiring high-temperature fire resistance.
Flexible mineral wool wraps designed for high-temperature ducts, exhaust systems, and process piping.
Building the next generation of insulation solutions through research, sustainability, and smart engineering.
We are researching alternatives to petroleum-based elastomers. By using plant-derived rubber alternatives and bio-plasticizers, we aim to lower the carbon footprint of our manufacturing while maintaining standard flame resistance and thermal performance.
To meet strict maritime and high-density residential safety standards, our R&D team is expanding our halogen-free line. These formulations limit acid gas emissions in fire scenarios, helping protect lives and sensitive electronic equipment.
Our technical roadmap includes integrating thin-film sensors beneath cladding layers. This development will allow operators to monitor heat loss and moisture levels in real-time, helping to prevent Corrosion Under Insulation (CUI) before it begins.
Exporting to over 66 countries requires strict quality controls, standardized packaging, and efficient logistics. Kingflex offers full support from container loading at Tianjin Port to delivery at destination ports worldwide.
Through our OEM services, we supply tailored solutions for global brands. This includes custom branding on packaging, custom length runs to reduce construction waste, and specific density calibrations to meet national building standards.
Our focus is on delivering complete, reliable energy-saving solutions to projects worldwide. We design products to perform consistently across thermal, cryogenic, and acoustic applications.
Integrated Sound & Thermal Control: Products are engineered to handle heat transfer and noise reduction in residential, commercial, and industrial facilities alike.
Support & Traceability: All batches are traceable back to raw material inputs, helping developers meet strict QA requirements on site.
Common technical questions regarding Kingflex elastomeric foam products and specifications.
Browse our standard catalog items and request price updates for your region.
