Kingflex
Engineered to deliver industry-leading thermal conductivity and moisture-resistance across low-temperature applications.
Kingflex Insulation Co., Ltd. stands as a premier manufacturing and trading combo for high-performance thermal insulation solutions. Headquartered in Dacheng, China—renowned globally as the capital of energy-saving building materials—Kingflex integrates design, R&D, advanced manufacturing, and technical consultancy.
Under the operation philosophy of energy conservation and thermal efficiency optimization, Kingflex supplies complete insulation systems globally. From consultancy and precision material science engineering to on-site implementation guidance and dedicated after-sales support, we lead the structural envelope and HVAC pipeline systems industries towards carbon-neutral operations.
Originating from the prestigious Jinwei Group (Kingway Group) founded in 1979, Kingflex carries over 40 years of pioneering technical heritage. Jinwei Group was historically the first thermal insulation manufacturer established north of the Yangtze River, paving the way for China's modern eco-friendly and energy-efficient building materials expansion.
Our foundation rests on continuous investment in production infrastructure. From early industrial manufacturing to modern digital-controlled extrusion lines, we maintain unmatched quality control across all parameters.
We are a designated production enterprise approved by the Ministry of Energy, the Ministry of Electric Power, and the Ministry of Chemical Industry.
Annual Production Capacity
Comprehensive product parameters for engineering selection, thermal calculation, and architectural drafting.
Our standard elastomeric NBR/PVC sheets are structured with a closed-cell matrix exceeding 98% density. This architecture ensures high resistance to moisture vapor diffusion, maintaining stable k-values for years.
| Parameter | Standard Specification |
|---|---|
| Material Composition | Premium Nitrile Butadiene Rubber / Polyvinyl Chloride (NBR/PVC) Blend |
| Thickness Range | 6mm - 50mm |
| Density | 40 - 55 kg/m³ |
| Service Temperature | -40℃ to +105℃ (Up to -200℃ with specialized cryogenic layering) |
| Closed-cell Rate | > 98% |
| Thermal Conductivity (λ) | ≤ 0.034 W/(m·k) at 0℃ |
Specially manufactured utilizing advanced extrusion-vulcanization processes to protect mechanical pipe runs. Reduces thermal transfer and protects pipe systems from corrosion and extreme frost damage.
| Parameter | Standard Specification |
|---|---|
| Thickness Range | 9mm - 40mm |
| Inner Diameter (ID) | 6mm - 114mm |
| Material Chemistry | NBR/PVC elastomer with integrated fire retardant chemical matrix |
| Compression Resilience | > 80% recovery under standard stress test conditions |
| Flame Behavior | Self-extinguishing; zero dripping properties |
Our operational excellence is driven by a deep talent pool and automated manufacturing infrastructure.
The R&D team at Kingflex comprises 8 professional chemical and polymer engineers, specializing in cellular rubber mechanics, foaming dynamics, and fire-resistant polymer additives. We employ 6 international logistics and technical sales experts to maintain clear, efficient engineering support globally. Our 230 manufacturing specialists ensure that every cubic meter leaving our factory meets strict tolerances.
By utilizing raw materials under strict ISO parameters and automated monitoring, we deliver consistent cellular structures, stable densities, and uniform physical properties in all production batches.
Continuous investment in test equipment guarantees international compliance.
Our products are tested and verified under leading global building codes and safety regulations.
Certified under BS 476, CE, REACH, RoHS, UL94, and ASTM standards, providing structural engineers and green building consultants with fully auditable, trace-verifiable technical credentials.
Analyzing current challenges, system optimizations, and regulatory dynamics across mechanical systems.
With global regulations pushing for net-zero energy systems, thermal efficiency has transitioned from an operational concern to a strict regulatory mandate. Standards like ASHRAE 90.1 and European EN 14304 dictate minimum thermal resistance values (R-values) for building envelopes and mechanical systems. Kingflex’s high-density closed-cell matrix helps minimize HVAC system heat gains, lowering overall emissions and helping projects earn LEED credits.
CUI causes significant operational downtime and maintenance costs in industrial pipelines. Conventional open-cell systems allow moisture vapor to penetrate and accumulate on cold metal surfaces, causing localized oxidation. Kingflex NBR/PVC closed-cell structures have an inherent, high water vapor resistance factor (μ-value), eliminating the need for separate vapor barriers and shielding pipes from surface oxidation.
Cryogenic operations—including liquid natural gas (LNG) processes, ethylene production, and pharmaceutical cold storage—require high thermal stability under extreme temperature differentials. Our specialized cryogenic elastomeric systems are formulated to resist structural fracturing and stress cracking under temperatures as low as -200°C, maintaining system insulation integrity over extended service life.
The thermal effectiveness of elastomeric insulation is determined by its micro-cellular configuration. Through strict formulation control and specialized processing, Kingflex insulation encapsulates inert gases inside isolated cells.
Unlike open-cell fiberglass or rock wool, which can absorb moisture from air humidity, the closed-cell design resists water infiltration. This prevents the deterioration of thermal conductivity over time, ensuring a consistent k-value even in warm, humid outdoor environments.
Additionally, the elastomeric nature of Nitrile Butadiene Rubber (NBR) blended with Polyvinyl Chloride (PVC) provides high flexibility. This allows for tight wraps around complex geometries, valves, manifolds, and bends without compromising material thickness.
Modern commercial structures demand both thermal efficiency and sound attenuation. Our acoustic foam variants utilize customized open-and-closed hybrid cell configurations to capture high-frequency air movement.
This design helps absorb structural vibrations within HVAC ducts, reducing fan and air turbulence noise. Its dampening performance improves indoor environmental quality (IEQ) in hospitals, schools, and offices.
By combining thermal efficiency and acoustic insulation into a single material layer, Kingflex helps mechanical contractors reduce labor costs and speed up installation schedules.
See how our elastomeric and cryogenic insulation systems perform in high-demand environments globally.
Our commitment to transparency and responsiveness, backed by global engineering testimonials.
A visual look into our production facilities, automated lines, and warehouse operations.
Our commitment to material science innovation and long-term sustainability.
Kingflex designs customized insulation systems for high-stress environments. By formulating our NBR/PVC matrix for specific moisture levels, temperature cycles, and ozone exposure, we supply tailormade insulation solutions for:
To address changing energy regulations, our chemical engineering teams are actively developing next-generation cellular insulation technologies:
Frequently asked questions regarding material selection, performance parameters, and installation specifications.
A1: It is primarily used for commercial HVAC ductwork, air conditioning refrigeration piping, building envelope systems, industrial thermal pipelines, and cryogenic storage. Its high moisture resistance makes it ideal for anti-condensation and acoustic damping.
A2: Yes, Kingflex rubber foam insulation is formulated with built-in flame retardants. It complies with BS 476 (Class 0 and Class 1), CE, UL94, and ASTM fire safety standards, ensuring low flame spread and self-extinguishing properties.
A3: Rubber foam features a flexible, closed-cell, moisture-impermeable matrix ideal for HVAC, plumbing, cold-preservation, and condensation prevention. Rock wool has an open fibrous structure suited for high-temperature applications and fire containment barriers, but requires a separate vapor barrier for cold applications.
A4: Yes, we provide full OEM and custom manufacturing services. We can adjust the thickness, inner diameter, density, color, and adhesive backing to meet specific project specifications.
A5: Our products are fully tested and certified under leading international standards, including BS 476, CE, REACH, RoHS, UL94, and ASTM. This guarantees compliance with global construction and environmental regulations.
A6: Yes, all Kingflex products feature full manufacturing batch traceability. Each production run is indexed with raw material batches, quality control records, and line logs to ensure absolute accountability.
A7: We can produce thicknesses ranging from 6mm to 50mm, allowing engineers to match the precise R-value required for their design conditions.
A8: When installed according to manufacturer specifications and protected from UV degradation (with specialized jackets or coatings), Kingflex elastomeric materials have an operational life of 10 to 15 years.
Explore our diverse material options for complete building and industrial system coverage.
Advanced NBR/PVC closed-cell foams for HVAC, mechanical systems, and low-temperature pipes.
View Category →Lightweight fibrous materials providing excellent thermal resistance and acoustic absorption for structural walls.
View Category →High-density stone wool designed for extreme temperatures, providing thermal barrier protection and structural fire containment.
View Category →Premium NBR/PVC sheets, adhesive-backed rolls, and acoustic-treated foams for direct wholesale distribution.
