Kingflex
Discover our highly technical range of elastomeric closed-cell foam sheets and tubing custom-engineered for low and ultra-low temperature settings.
Optimal for chilled water and glycol refrigeration lines. Flexible, low thermal conductivity, and prevents pipe corrosion under insulation (CUI).
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Flexible sheet roll designed for large-diameter storage vessels, preventing surface condensation and thermal bridges in harsh marine ports.
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Specifically designed to operate reliably at extreme cryogenic temperatures, providing long-term structural resiliency under cyclic thermal shocks.
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Heavy-duty thermal barrier systems for liquefied gases (LNG, $LN_2$). Guarantees minimal boil-off gas rates over decades of service.
View Details →Unpacking the strategic requirements of low-temperature insulation in European energy hubs.
France represents one of the most critical epicenters for cryogenics and liquefied gas logistics in Europe. With major LNG import terminals such as the Dunkerque LNG terminal, Montoir-de-Bretagne, and Fos Cavaou, the country handles billions of cubic meters of liquefied natural gas annually. Operating at storage temperatures of -162°C (-260°F) requires insulation materials of the highest fidelity. Thermal performance drops or condensation failures in these locations could cost operators millions of euros in lost boil-off gas (BOG) and equipment degradation.
Furthermore, France’s commitment to the "France 2030" investment plan places a heavy emphasis on building a competitive low-carbon hydrogen economy. Liquid hydrogen ($LH_2$), stored at an astonishingly low temperature of -253°C, demands next-generation elastomeric insulation products. Standard thermal insulation materials fail under these intense thermal gradients due to severe shrinkage, crystallization, and cracking. Our advanced NBR/PVC and modified synthetic rubber-based elastomeric foams maintain their flexibility and structural integrity, sealing pipelines and storage tanks against convective energy losses and moisture permeation.
| Parameter Description | Elastomeric NBR/PVC Foam System | Cryogenic Synthetic Rubber Sheet | Standard ASTM & EU Norms |
|---|---|---|---|
| Service Temperature Limit | -40°C to +105°C | Down to -200°C | ASTM C534, EN 14706 |
| Thermal Conductivity (λ) | ≤ 0.034 W/(m·K) at 0°C | ≤ 0.032 W/(m·K) at -100°C | EN ISO 8497 / ASTM C177 |
| Water Vapor Permeability (μ) | ≥ 10,000 | ≥ 20,000 (Built-in Vapor Barrier) | EN 12086 / ASTM E96 |
| Fire Performance Class | Euroclass B-s3, d0 | BS 476 Class 0, UL94 V-0 | EN 13501-1 / BS 476 Part 6/7 |
| Density Range | 40 - 55 kg/m³ | 45 - 60 kg/m³ | ASTM D1622 |
| Closed-Cell Rate | ≥ 98% | ≥ 98.5% | ISO 4590 |
Building a greener, more energy-efficient future through decades of continuous technological development.
Kingflex Insulation Co., Ltd. is a globally recognized manufacturing and trading conglomerate specializing in high-end thermal and cryogenic insulation products. With our research and development headquarters situated in the green-building materials hub of Dacheng, China, we operate at the intersection of energy savings, environmental stewardship, and advanced material sciences.
Established as part of the esteemed Jinwei Group (founded in 1979, holding over 40 years of pioneering insulation manufacturing history), Kingflex represents the leading edge of elastomeric foam production. We have expanded our operations to house 5 fully automated assembly lines, supporting an annual output capacity exceeding 600,000 cubic meters. Our factories are officially recognized production partners for key ministries, serving industrial sectors across 66+ countries.
By combining advanced polymer research with robust quality control protocols, our scientific teams continuously refine low-temperature formulations. We assist French engineering firms and EPC contractors through comprehensive lifecycle consultations: from thermal loss modeling and custom material thickness specification to localized logistics and installation supervision on site.
How our technical innovations align with upcoming European decarbonization plans.
Traditional elastomers crystallize and crack when exposed to extreme sub-zero temperatures. Kingflex’s proprietary NBR/PVC blend introduces specialized plasticizers and custom rubber compounds, extending flexibility down to -200°C, ensuring the foam acts as a resilient buffer against rapid pipeline thermal cycling.
Moisture is the primary enemy of cryogenic infrastructure. As vapor travels toward the freezing pipe, it turns to ice, destroying structural cell walls. Our closed-cell structure (≥98% cell density) operates as a continuous, integrated vapor barrier, completely bypassing the need for fragile external foil wraps.
Designed with ecological responsibility in mind, our materials are fully dust-free, fiber-free, and free of CFCs or HCFCs. They comply strictly with European REACH, RoHS, and CE guidelines, ensuring absolute safety during installation and high-performing thermal efficiency inside confined industrial zones.
As the European chemical sector shifts from fossil-based processes to green feedstock, ammonia ($NH_3$ at -33°C), ethylene ($C_2H_4$ at -103.7°C), and liquefied hydrogen ($LH_2$ at -253°C) are gaining rapid market share in the French energy landscape. Standard industrial setups must evolve to match these challenges. Our design teams are actively prototyping advanced hybrid insulation systems, integrating low-density aerogels with our ultra-flexible cryogenic elastomeric sheets to create thinner, highly resilient thermal coats capable of protecting hydrogen transfer pipelines from thermal bridging and boil-off.
Browse through our specialized solutions tailored for various mechanical, chemical, and building applications.
Engineered for thermal networks requiring dual protection against heat radiation and sub-zero chill losses.
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High-grade rubber foam tube with excellent ozone resistance. Perfect for hot/cold mixed lines inside HVAC complexes.
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A comprehensive system-wide solution designed for complex sub-zero piping networks and cryogenic storage vessels.
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Specially formulated elastomeric system that handles extreme thermal drops down to -200 °C without losing flexibility.
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Environmentally certified insulation with zero ozone-depleting potential. Excellent thermal insulation performance.
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Complete insulation package featuring high water vapor resistance, limiting ice formation risks on critical lines.
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High density closed-cell structure designed to absorb structural vibrations and resist physical abrasion on pipelines.
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Dual-temperature rubber foam engineered to withstand large operational fluctuations from freeze cycles to hot purging.
Request Quote →Ensuring our products seamlessly meet European and international industrial standards.
Operating cryogenic piping and cold storage terminals in France requires compliance with rigorous safety codes. All Kingflex cryogenic insulation systems undergo extensive third-party testing to guarantee they align with major global parameters, including CE, REACH, RoHS, UL94, ASTM, and the British Standard BS 476. Our fire-retardant formulas prevent flame propagation, ensuring that in the event of an emergency, the insulation material will not release toxic fumes or accelerate fire spread.
Furthermore, we prioritize material traceability. Every batch of rubber foam insulation leaving our automated assembly lines is tracked via a dedicated QA system, allowing engineers to verify compliance documents from production raw materials through to final onsite installation. This level of quality assurance is critical for high-stakes projects, such as refueling systems for the aerospace sector in Toulouse or petrochemical pipelines in Lyon.
Detailed technical answers to common queries regarding cryogenic elastomeric foam insulation.
Need high-grade thermal protection for an LNG terminal, an HVAC installation, or a chemical processing system in France? Get in touch with our specialized engineering team for custom thickness evaluations, technical datasheets, and direct manufacturer pricing.