Kingflex
Direct supply from leading Hebei Dacheng manufacturing complexes. Explore our certified elastomeric rolls, soundproof boards, and cryogenic thermal barriers.
The performance of modern thermal barriers lies in the chemistry of the compound. We leverage molecular control to provide unparalleled thermal resistance.
The foundation of Kingflex elastomeric insulation is our specialized NBR/PVC closed-cell structure. Nitrile Butadiene Rubber (NBR) provides excellent elasticity, low chemical reactivity, and structural flexibility under extreme temperature ranges (-40℃ to 105℃). Polyvinyl Chloride (PVC) is chemically blended to improve overall fire retardancy and ozone/UV resistance.
By adjusting the blowing agent ratios and catalyst structures in the formulation stage, we maintain a uniform micro-cellular grid with a closed-cell rate exceeding 98%. This dense barrier restricts convective gas movement within the material, yielding a remarkably low thermal conductivity coefficient (λ ≤ 0.034 W/m·k at 0°C).
Additionally, the high concentration of inorganic flame retardants ensures low smoke toxicity, complying directly with global building standards such as Class 0 rating (BS 476 Part 6/7) and Class V-0 ratings (UL 94).
| Property Parameter | NBR/PVC Elastomeric Foam Spec | Cryogenic System Spec | Glass/Rock Mineral Wool Spec |
|---|---|---|---|
| Operating Temp. Range | -40℃ to 105℃ | -200℃ to 125℃ | Up to 650℃ (Fiberglass: 400℃) |
| Thermal Conductivity (λ) | ≤ 0.034 W/(m·K) at 0°C | ≤ 0.032 W/(m·K) at -150°C | ≤ 0.039 W/(m·K) at 25°C |
| Water Vapor Resistance (μ) | ≥ 10,000 | ≥ 20,000 | Unrated (Requires vapor barrier) |
| Standard Density | 40 - 55 kg/m³ | 65 - 85 kg/m³ | 60 - 150 kg/m³ |
| Fire Certification | BS 476 Class 0, UL94 V-0 | BS 476 Class 1, ASTM E84 | Class A1 Non-combustible |
Years of Manufacturing Heritage
Cubic Meters Annual Capacity
Exporting Destination Countries
Dedicated Chemical & R&D Engineers
Founded on a heritage of energy conservation, driving high-efficiency green building materials since 1979.
Kingflex Insulation Co., Ltd. is a professional manufacturing and trading combo for thermal insulation products. Kingflex research development and production department is located in the well-known capital of green-building materials in Dacheng, China. It is an energy-saving environmental friendly enterprise concentrating on research, development, production, and sales.
In operations, Kingflex takes energy saving and consumption reduction as its core concept. We provide solutions regarding insulation by means of expert consultation, custom formula research and development, scale production, installation guidance, and dedicated post-sale services to lead the development of the global building materials industry.
Kingflex was established by the Jinwei Group (also historically referenced as the Kingway Group), which commands more than 40 years of industry history. Established in 1979, the group was the first pioneer manufacturer of thermal insulation materials north of the Yangtze River, laying the foundation for standardizing elastomeric rubber foam formulations in China.
Our employees are amazing in their own right, but together they are what makes Kingflex such a fun and rewarding place to work. The Kingflex team is a tight-knit, talented group with a shared vision of giving consistently first-class service to our clients. Currently, Kingflex employs 8 professional engineers in our R&D Department, 6 professional international sales specialists, and over 230 highly skilled workers in our production department.
This balanced workforce allows us to run custom production trials, formulate customized density requests, and handle high-volume export documentation smoothly for commercial, chemical, and cryogenic construction projects worldwide.
Unlocking cost efficiencies and logistical supremacy through highly integrated production lines in Hebei province.
At present, Kingflex operates 5 large automatic assembly lines, generating an annual production capacity of more than 600,000 cubic meters. This massive footprint makes Kingflex a designated manufacturing enterprise chosen by the Ministry of Energy, the Ministry of Electric Power, and the Ministry of Chemical Industry.
Our position inside the Dacheng industrial cluster ensures direct raw NBR and PVC material access, reducing upstream freight costs. These supply-chain savings are directly passed down to our B2B customers, optimizing the project pricelist for distributors, contractors, and global OEM partners.
Over the past 16 years, Kingflex thermal insulation sheets, tube lines, and soundproof products have been successfully exported to more than 66 foreign countries. Our dedicated shipping logistics teams optimize container space, utilizing specialized compression packing to lower maritime freight costs.
Take a look inside our R&D and Testing operations:
Ensuring cross-border regulatory compliance and physical safety specifications for commercial and industrial zones.
Navigating global building codes requires strict adherence to localized performance criteria. Kingflex materials are engineered to bridge this gap. Our NBR/PVC and glass wool solutions have undergone rigorous laboratory evaluations to guarantee performance, health, and environmental compliance.
We actively comply with the following validation schemes:
Accurate dimensions and engineering attributes designed to optimize installation speed and overall system reliability.
Material base: High-density NBR/PVC cellular compound
Available Thicknesses: 6mm to 50mm
Physical Density: 40 - 55 kg/m³
Service Temperature Limits: -40℃ to 105℃
Material base: NBR/PVC elastomeric compound
Available Thicknesses: 9mm to 40mm
Inner Diameter (ID) Range: 6mm to 114mm
Physical Density: 40 - 55 kg/m³
Chilled water lines, condensation pipes, duct systems, and air-handling units.
Chilled containment, gas liquid terminals, and storage vaults under -150℃.
Steam pipe jackets, chemical storage silos, and sound damping equipment enclosures.
Acoustic sound walls, mechanical room ceilings, and cold-room envelope walls.
Verification of international client partnerships and direct feedback on our export supply capabilities.
We work directly with contractors, estimators, and industrial project buyers to deliver custom formulations tailored to mechanical demands. To ensure smooth compliance audits, we provide complete transparency from materials test certificates to delivery tracking logs.
Below are screenshots showing actual project feedback, customer order requests, and successful container deliveries across our client network.
Visual records of our extensive inventory, dynamic assembly processes, and standard physical testing methods.
Available in varied material bases, aluminum foil surface linings, and high-temp glass wool backings.
A compilation of direct technical answers from Kingflex R&D engineers, ensuring chemical, structural, and custom project clarity.
Continuous progress in energy saving, noise reduction, and structural environmental safety.
We supply customers all over the world with a full set of energy-saving insulation system solutions. We serve as an integrated solution provider of thermal insulation, cold insulation, and noise reduction for buildings and industries, aiding global projects in reducing carbon footprints and cutting operational HVAC costs.
Ensure reliable thermal values across your HVAC duct lines, aluminum-foil coated boards, and low-temp pipelines.
