Engineered for peak performance under European thermal regulations, optimized for condensation prevention and acoustic damping in HVAC systems.
Navigating decarbonization targets, RE2020 energy-saving laws, and advanced thermal efficiency requirements in French civil and commercial construction.
As France moves aggressively toward its carbon-neutrality goals (Stratégie Nationale Bas-Carbone - SNBC), the insulation of heating, ventilation, and air conditioning (HVAC) systems has transitioned from a routine building practice to a highly regulated engineering necessity. The implementation of the RE2020 environmental regulation dictates stringent primary energy consumption limits. In this context, thermal losses from uninsulated or poorly insulated pipelines are no longer acceptable. Elastomeric rubber foam insulation tubes (mousse élastomère alvéolaire) serve as a vital component in preserving thermal integrity in HVAC/R applications across metropolitan areas like Paris, Marseille, Lyon, and Toulouse.
Our manufacturing output focuses on delivering a low thermal conductivity rating (λ ≤ 0.033 W/m·K at 0°C) coupled with high resistance to water vapor transmission (μ ≥ 10,000). For French engineers and procurement officers, these values translate directly into long-term prevention of Corrosion Under Insulation (CUI) and energy-efficiency compliance in tertiary buildings (bâtiments tertiaires), cleanrooms, and food processing facilities.
Under the European fire classification EN 13501-1, French commercial buildings increasingly request BL-s2,d0 or BL-s3,d0 fire behavior ratings for pipeline materials installed in escape routes. Choosing the correct formulation of Nitrile Rubber (NBR) blended with Polyvinyl Chloride (PVC) ensures flame retardancy and high mechanical flexibility, minimizing toxin discharge in case of fire incidents.
How closed-cell engineering delivers superior condensation control and thermal barrier performance compared to traditional fibrous insulation.
Unlike open-cell glass mineral wool or rock wool, Kingflex elastomeric foam features a dense cell structure where more than 98% of the cells are closed. This integrated vapor barrier ensures that moisture cannot migrate through the insulation to reach the cold pipe, avoiding condensation, mold growth, and subsequent loss of insulation efficiency.
Our insulation tubes maintain a stable thermal conductivity curve across a temperature operating envelope of -40°C to +105°C. This makes them ideal for central hot water circuits, underfloor heating, and chilled water loops. High flexibility allows for rapid installation around complex pipeline junctions, elbows, and valves.
For French distributors and HVAC engineers, choosing between elastomeric rubber foam and rock wool is critical. While rock wool is ideal for high-temperature industrial steam lines, rubber foam insulation is the premier choice for cooling systems, air conditioning (climatisation), and refrigeration plants. The key lies in the moisture absorption mechanism: when fibrous insulation absorbs even 1% moisture by volume, its thermal resistance drops by up to 60%. Closed-cell rubber foam maintains its low thermal conductivity consistently over a 15-year operational lifecycle, offering a lower total cost of ownership (TCO) to building operators.
Advanced configurations designed for extreme low-temperature pipelines, LNG terminals, and highly corrosive chemical plant environments in France.
A world-class manufacturing powerhouse specializing in energy-efficient closed-cell elastomeric technology 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 and development, production, and sales.
Our parent group, the Jinwei Group, holds more than 40 years of industrial heritage, founded in 1979 as the first thermal insulation materials manufacturer north of the Yangtze River. In operation, Kingflex takes energy saving and consumption reduction as its core concept. We provide custom solutions regarding thermal insulation through consulting, design, R&D production, installation guidance, and dedicated post-sale services.
At present, Kingflex operates 5 large automatic assembly lines with an annual production capacity exceeding 600,000 cubic meters. Our factory is a designated production enterprise appointed by the Ministry of Energy, the Ministry of Electric Power, and the Ministry of Chemical Industry in China.
Over the past 16 years, Kingflex thermal insulation products have been exported to more than 66 countries and regions worldwide, including major hubs across Europe, South America, and Southeast Asia. We supply integrated system solutions covering thermal insulation, cold conservation, and noise reduction for both structural buildings and petrochemical industries.
Every batch is tested to meet strict European standards, backed by a world-class R&D team.
Our employees are amazing in their own right, but together they make Kingflex a unified force of innovation. The Kingflex team is a tight-knit, talented group with a shared vision of providing consistently first-class service to our clients. Our dedicated setup features:
Explore structural details for both elastomer tubes and sheet rolls designed to meet French architectural benchmarks.
Specially designed for wrapping large diameter ventilation ducts, square chillers, and industrial tanks, these elastomeric rolls minimize thermal joints and reduce thermal bridging.
| Material: | NBR/PVC blend |
| Thickness Range: | 6mm to 50mm |
| Density: | 40 - 55 kg/m³ |
| Operating Limits: | -40℃ to 105℃ |
Ideal for central air conditioning duct systems, wall acoustic insulation in public buildings, industrial process vessels, railway transit coaches, and cryogenic insulation systems at sea ports.
Specifically formulated to slide easily onto copper and steel pipelines, providing a secure, tight-fitting seal that keeps condensation out.
| Material: | NBR/PVC |
| Wall Thickness: | 9mm to 40mm |
| Inner Diameter (ID): | 6mm to 114mm |
| Density: | 40 - 55 kg/m³ |
| Service Temperature: | -40℃ to 105℃ |
Used extensively in hotel chilled-water systems, residential hydronic heating systems, solar thermal collectors, food and beverage processing, and cryogenic liquid delivery piping.
Proven implementation cases from building sites, industrial pipeline networks, and direct feedback from engineering partners.
Wholesale direct quotes on specialized elastomeric profiles, developed for high-end HVAC/R, acoustic insulation, and plumbing systems in France.
Ensuring smooth delivery and full technical compliance with French energy and security standards.
As an experienced global exporter, Kingflex ensures stress-free shipping coordinates to core French commercial logistics hubs. Whether unloading at the Port of Le Havre (HAROPA) in the north or Marseille-Fos Port in the south, our export specialists manage complete documentation, including:
French environmental regulations mandate that every structural building component carries a documented carbon footprint. By sourcing our long-lifetime elastomeric thermal insulation, engineers reduce replacement cycles and operational thermal losses. This lowers the lifecycle carbon cost of tertiary buildings, helping properties meet strict energy ratings and secure green certifications like BREEAM or HQE (Haute Qualité Environnementale).
Get answers to technical questions about elastomeric foam performance, fire resistance, and global sourcing processes.
A1: It is primarily used for HVAC/R systems, including commercial air conditioning pipelines, ventilation ducts, chilled water supply networks, industrial steam pipes, and acoustic sound insulation inside equipment rooms.
A2: Yes, our elastomeric rubber foam insulation is fire-retardant and self-extinguishing. It is manufactured to meet European fire safety classifications, including BS 476, Class 0/1 ratings, and EN 13501-1 standards for safe use in civil construction.
A3: Rubber foam features a flexible, closed-cell, and moisture-proof structure, making it the premier choice for cold pipeline condensation control and HVAC applications. Rock wool is a fibrous material suited for high-temperature applications (above 150°C), but it requires a separate vapor barrier to prevent moisture absorption.
A4: Yes, we provide full OEM and ODM services. We customize inner diameters, insulation wall thicknesses, outer colors, self-adhesive backings, and sheet roll dimensions to match project specifications.
A5: Our products are certified under ISO 9001, BS 476 (Class 0 & Class 1), CE (EN 14304), REACH, RoHS, UL94 (V-0 rating), and ASTM standards. This ensures compliance for projects across the European Union.
A6: Yes, all Kingflex shipments include complete raw material batch tracking and quality inspection reports. This ensures complete traceability from production to delivery at your project site.
A7: We manufacture continuous rubber foam sheet rolls in thicknesses ranging from 6mm to 50mm, providing flexible solutions for varying thermal requirements.
A8: When properly installed and maintained under standard operating temperatures (-40°C to +105°C), our insulation products provide a service life of 10 to 15 years.
Kingflex