Kingflex
Explore our elite range of thermal, waterproof, and sound-absorbing products manufactured under strict global environmental and safety standards.
As the global construction and manufacturing sectors navigate the challenges of the energy transition, advanced thermal and acoustic insulation materials have transitioned from simple structural additions to mission-critical infrastructure components. According to international energy reports, heating, ventilation, and air conditioning (HVAC) systems account for over 40% of the energy consumed within commercial and residential structures globally.
High-efficiency, closed-cell elastomeric rubber foam materials represent the vanguard of heat preservation and cold preservation technology. Engineered using premium NBR/PVC blends, these systems establish a micro-cellular barrier against environmental variables. The integration of advanced polymer matrices maintains a low, stable thermal conductivity ($\lambda \le 0.034$ W/(m·K) at $0^\circ\text{C}$), which effectively eliminates convective heat transfer and mitigates the risk of moisture ingress.
Combining 40+ years of industrial expertise with automated manufacturing pipelines to supply reliable insulation solutions worldwide.
Established by Jinwei Group—which holds a rich history of over 40 years dating back to 1979—Kingflex was established as the first manufacturer of thermal insulation materials north of the Yangtze River. The company's production and R&D center is located in Dacheng, China, a widely recognized hub for green building materials.
We deliver energy-saving solutions by integrating professional consulting, advanced custom manufacturing, precise installation guides, and dedicated support. Our primary focus is supplying integrated insulation, cold preservation, and acoustic dampening systems to global industries.
Our corporate backbone includes 8 dedicated R&D engineers, 6 international sales consultants, and 230 technicians. Working together with Jinwei Group's historic background, we maintain absolute quality and customer satisfaction across sixty-six countries.
To support high-priority engineering projects globally, Kingflex runs 5 fully automated assembly lines. These lines deliver a combined annual output exceeding 600,000 cubic meters of high-density and low-density elastomeric materials.
These advanced production lines ensure consistent mechanical properties, precise wall thicknesses, and uniform cell structures across all NBR/PVC foams. Consequently, Kingflex is recognized as a designated production enterprise by the Ministry of Energy, the Ministry of Electric Power, and the Ministry of Chemical Industry.
Analyze the performance metrics of our premier rubber foam rolls and insulation pipes, tested to international standards.
| Performance Parameter | Kingflex Rubber Foam Sheet Roll | Kingflex Rubber Foam Insulation Pipe | Reference Standards |
|---|---|---|---|
| Base Composition | NBR/PVC Elastomeric Foam | NBR/PVC Closed-Cell Compound | ASTM D1667 / ISO 1923 |
| Thermal Conductivity | $\le 0.034$ W/(m·K) at $0^\circ\text{C}$ | $\le 0.034$ W/(m·K) at $0^\circ\text{C}$ | ASTM C518 / GB/T 10294 |
| Water Vapor Permeability | $\ge 1.2 \times 10^{4}$ ($\mu$-factor) | $\ge 1.0 \times 10^{4}$ ($\mu$-factor) | BS EN 12086 / ASTM E96 |
| Service Temperature Limit | $-40^\circ\text{C}$ to $+105^\circ\text{C}$ (Cryogenic versions down to $-200^\circ\text{C}$) | $-40^\circ\text{C}$ to $+105^\circ\text{C}$ | ASTM C411 |
| Fire Safety Rating | Class 0 / Class 1 / Fire Retardant | Self-extinguishing, high oxygen index | BS 476 Part 7, UL94 V-0, GB 8624 |
| Standard Thicknesses | 6mm - 50mm | 9mm - 40mm (Inner Diameter: 6mm - 114mm) | EN 13467 |
| Compression Resilience | $\ge 80\%$ recovery rate | $\ge 80\%$ recovery rate | ASTM D3574 |
Our high-performance NBR/PVC elastomeric formulations are engineered to meet strict technical requirements across diverse industries.
Maintains thermal control in commercial air conditioning ducts, chilled water lines, and condensation systems. By keeping water vapor out, our closed-cell structure prevents structural damage and maintains energy efficiency in humid conditions.
Insulates industrial storage tanks, steam distribution setups, and chemical process lines. Resists external chemical spills, mild acids, and UV rays while protecting high-temperature networks from rapid energy loss.
Our specialized ultra-low temperature series is designed to insulate cryogenic gas pipelines and cold storage units. The material handles extreme thermal contraction and stress down to $-200^\circ\text{C}$ without cracking or losing adhesion.
Delivers targeted noise reduction and thermal insulation for high-speed train cars, subways, and aerospace hulls. High-density structures dampen structure-borne noise, while meeting low-smoke, non-toxic fire safety requirements.
Open-cell structures provide sound absorption in mechanical equipment rooms, hotels, and medical facilities. The fiber-free composition prevents airborne particulates, maintaining clean indoor air quality in sterile environments.
Protects solar hot water systems and outdoor water distribution lines from extreme weather. High UV resistance prevents premature cracking and weathering, keeping outdoor installations working efficiently for years.
Modern building and industrial projects prioritize sustainability. Kingflex R&D engineers focus on developing materials that reduce smoke emissions and eliminate toxicity during a fire, while maintaining excellent thermal insulation.
Our halogen-free elastomeric thermal insulation rolls contain zero chlorine, fluorine, or bromine. This formulation prevents the release of acidic gases in a fire, making them ideal for sensitive environments like data centers, high-tech cleanrooms, and passenger ships.
We confirm our material claims with internationally recognized testing labs and successful projects worldwide.
We believe in transparent engineering partnerships. Kingflex products go through strict internal quality control and third-party testing before shipping. This reliable performance makes us a trusted vendor for key infrastructure projects, from district cooling systems to chemical facilities.
These real-world chat captures show how our customer support, logistics coordination, and technical services reliably handle complex orders from international distributors and project engineers.
Detailed answers to common technical, regulatory, and application questions about flexible elastomeric foam.
Engineered thermal systems and aluminum-clad composite options designed for demanding projects.
A look inside our automated production bays, raw material mixing plants, and standard warehousing facilities.
