Kingflex
Factory-direct sourcing from world-class manufacturing lines with verified fire protection and thermal efficiency certifications.
In modern commercial construction and industrial processing, mechanical systems require thermal insulation materials that do not simply restrict heat transfer but also act as a defense barrier against fire hazards. Class 0 Insulation is the gold standard under international fire testing norms, guaranteeing superior resistance to flame propagation and extremely low heat release rates.
Class 0 is not just a rating; it represents a comprehensive fire safety parameter defined by BS 476 Part 6 (Fire Propagation) and BS 476 Part 7 (Surface Spread of Flame). To meet Class 0 requirements, the material must achieve a Class 1 ranking under Part 7 (representing the lowest spread of flame) and demonstrate a sub-index of propagation under Part 6 of less than 6, with an overall propagation index of less than 12. Kingflex NBR/PVC elastomeric rubber foam insulation is engineered to achieve these properties natively, without sacrificing flexibility or environmental integrity.
Kingflex Insulation Co., Ltd. stands as a premium, fully integrated manufacturing and trading conglomerate dedicated to high-efficiency thermal insulation products. Located strategically in Dacheng, China—historically and globally recognized as the capital of green-building materials—our facility integrates research, development, and high-scale production.
Established under the parent umbrella of the Jinwei Group, which carries over 40 years of industry history since its foundation in 1979, Kingflex represents the pioneer of thermal insulation manufacturing north of the Yangtze River. We prioritize energy conservation and emission reduction across all operational stages, delivering end-to-end consulting, R&D, customized product configurations, installation blueprints, and professional after-sales technical support.
A granular breakdown of the physical, thermal, and mechanical parameters of our NBR/PVC elastomeric insulation products.
Ideal for flat surfaces, large-diameter ductwork, and equipment housings. Available with various facings such as aluminum foil and self-adhesive backings for fast installation.
| Parameters | Standard Configuration |
|---|---|
| Material | Premium NBR / PVC Blend |
| Thickness | 6mm to 50mm |
| Density | 40 - 55 kg/m³ |
| Service Temp. | -40℃ to 105℃ |
| Closed-Cell Rate | Over 98% |
Specially extruded for quick sleeve installation over copper, steel, and plastic piping systems. Ensures uniform barrier control on curved joints and linear lines.
| Parameters | Standard Configuration |
|---|---|
| Material | NBR/PVC Elastomeric Foam |
| Thickness | 9mm to 40mm |
| Inner Diameter (ID) | 6mm to 114mm |
| Density | 40 - 55 kg/m³ |
| Service Temp. | -40℃ to 105℃ |
Where Kingflex Class 0 and Cryogenic Insulation systems are deployed globally to combat condensation, energy loss, and fire hazards.
Extensively utilized in central air conditioning systems, chilled water pipes, condensate pipelines, and air ventilation ductwork. Minimizes energy transmission losses while preventing surface condensation in highly humid zones.
Our specialized diolefin and dienes flexible cryogenic insulation systems are optimized for liquified natural gas (LNG), industrial cold storage systems, and advanced cooling networks down to ultra-low temperatures.
Used inside wall cavities, acoustic panels, ceiling linings, and machine plant rooms. The micro-porous structure absorbs airborne sound and dampens structural vibrations in hospitals, hotels, and schools.
Perfect for refineries, chemical process piping, and pharmaceutical lines where chemical resistance, mechanical resilience, and continuous service temperatures are required.
Retains heat in solar collectors and geothermal heat pumps. Weather-resistant variants prevent rapid degradation under continuous UV exposure and high thermal loads.
Resistant to saltwater spray and high humidity. Certified under strict safety regulations, ensuring minimal toxic smoke development and flame propagation on ships.
Innovation is the core engine driving Kingflex. Our R&D department features eight senior materials engineers who focus on enhancing the physical limits of elastomeric NBR/PVC structures. By maintaining an even cell size distribution, we keep our thermal conductivity (λ ≤ 0.034 W/m·K at 0°C) lower for longer periods.
Every batch of Class 0 insulation goes through rigorous testing for moisture vapor transmission, fire performance (BS 476 Pt 6 & 7), thermal stability, and mechanical compression resilience. This quality loop guarantees that our products continuously comply with strict global import standards.
How localized clustering, vertical manufacturing integration, and scale optimization buffer against global market volatility.
Our geographic location in Dacheng, Hebei Province, gives Kingflex a distinct operational advantage. By operating within China's primary green-building material industrial hub, we share localized raw material pools, chemical manufacturing support networks, and streamlined shipping access to major northern container ports like Tianjin (Xingang).
Direct pipeline and regional partnerships for PVC resins and synthetic rubber (NBR) feedstock insulate us from sudden global pricing spikes, ensuring steady unit costs for our partners.
By replacing batch compounding with continuous extruders, we cut energy use, guarantee uniform cell structures, and virtually eliminate product waste.
Close partnerships with major ocean shipping lines allow us to schedule container space dynamically, reducing export processing times and lead times for high-volume orders.
As global initiatives push towards net-zero carbon footprints, mechanical insulation must advance beyond passive energy savings. The Kingflex technological roadmap focuses on integrating bio-based foaming agents, developing halogen-free compositions, and maximizing structural insulation performance in space-restricted installations.
Engineering smoke-free materials that eliminate chlorine and bromine compounds, satisfying specialized green-building requirements without lowering fire performance.
Integrating silica-aerogel powders into the rubber foam substrate to reduce thermal conductivity values to less than 0.030 W/m·K for cryogenic applications.
Embedding phase-change microcapsules to actively manage transient heat spikes, reducing peak loads on refrigeration and building systems.
Real-time feedback and direct communications from our international distributors and project engineering clients.
Preserving our full specialized line of NBR/PVC elastomeric foam products, cryogenic systems, and acoustic solutions.
Real photos showcasing our bulk material dispatch, international shipping packaging, and raw material yards.
Expert responses regarding application, fire standards, comparisons, and custom manufacturing limits.
A1: It is mainly used for HVAC ducts, air conditioning pipes, building thermal insulation, industrial pipeline cold insulation, and sound absorption/acoustical damping across commercial and infrastructure projects.
A2: Yes, our elastomeric rubber foam insulation features built-in flame retardants, successfully meeting BS 476 Class 0 and Class 1 standards, along with international building safety and smoke indices.
A3: Rubber foam is highly flexible, features a closed-cell matrix, and has an inherent water vapor barrier, making it ideal for cold lines, condensation control, and HVAC systems. Rock wool is a fibrous material with high-temperature resistance and fire protection properties, commonly used for high-temperature steam lines and dry structural firewalls.
A4: Yes, we provide full OEM support, adjusting density, thickness, tube inner diameters, custom self-adhesive layers, protective foil facings, and packaging configurations to match specific project parameters.
A5: Our materials are certified under BS 476 (Parts 6 & 7), CE, REACH, RoHS, UL94, and ASTM. This ensures complete compliance with European, Middle Eastern, and North American building codes.
A6: Yes, every batch features full code tracking from raw material intake to final vulcanization and dispatch, ensuring accountability and easy verification for field engineers.
A7: We can produce roll thicknesses from 6mm up to 50mm to handle varying design parameters and condensation requirements.
A8: When correctly specified and installed according to our guidance, our elastomeric products maintain stable thermal and moisture-resistant performance for 10 to 15 years.
A9: Our rubber foam maintains a closed-cell rate exceeding 98%. This high percentage prevents air convection within the cells and blocks moisture absorption. A high closed-cell rate keeps thermal conductivity low over the system's operational life.
A10: Large wholesale orders typically ship within 14 to 21 days from order confirmation, depending on specific thickness configurations and factory loading schedules.
Additional products from our manufacturing line including specialty tubes, acoustic panels, and ultra-low temperature variations.
Connect directly with our engineering division in Dacheng, China, to receive custom pricing, material safety data sheets (MSDS), and physical test reports.
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