Kingflex
Direct pricing & premium specifications from China's state-of-the-art continuous vulcanization manufacturing lines.
The global construction and industrial processing sectors are undergoing a historic transition. As regulatory bodies enforce strict thermal transmittance (U-value) targets and low-carbon materials mandates, standard insulating systems are no longer viable. Kingflex Insulation Co., Ltd. (an affiliate of the legendary Jinwei Group, built on a foundation since 1979) spearheads this movement from the green building materials hub in Dacheng, China.
Traditional petrochemical insulation often compromises environmental integrity due to high levels of Volatile Organic Compounds (VOCs) and halogenated flame retardants. Today's commercial requirements specify materials that maintain an ultra-low thermal conductivity ($\lambda \le 0.034 \text{ W/(m}\cdot\text{K)}$ at $0^\circ\text{C}$) while delivering zero ozone depletion potential (ODP) and zero global warming potential (GWP). The Eco Core platform integrates high-density, closed-cell NBR/PVC structures with advanced environmental catalysts, setting a new global benchmark for structural energy conservation.
Behind the brand is the formidable legacy of the Jinwei Group, established in 1979. Recognizing the critical need for advanced insulation during China's industrialization phase, Jinwei Group established the first dedicated thermal insulation facility north of the Yangtze River. Decades of continuous chemical synthesis testing and engineering modifications led to the birth of Kingflex Insulation Co., Ltd.
By blending deep institutional knowledge with contemporary materials engineering, Kingflex has transformed simple raw elastomers into complex matrices of micro-cellular structures. This technical evolution ensures that all industrial tubing, sheet rolls, and custom structural insulation components maintain dimensional stability under severe environmental stress.
For more than forty years, our underlying strategy has centered on vertical integration—managing everything from rubber polymer compound mixing to high-temperature continuous extrusion ovens. This meticulous process control reduces performance variability across batches, offering engineers predictable results in the field.
Inside Dacheng's leading automated manufacturing park: how Kingflex leverages cutting-edge technology to achieve volume consistency and cost leadership.
Our smart lines integrate automatic raw feeding, high-precision vulcanization controls, and real-time infrared laser thickness-monitoring instruments for zero-defect sheets and tubes.
Led by 8 professional thermodynamic and materials science engineers, our R&D center regularly optimizes rubber formulas to enhance flame resistance and moisture-vapor permeability.
Authorized supplier designated by the Chinese Ministry of Energy, Ministry of Electric Power, and Ministry of Chemical Industry, reflecting our strict state-level engineering compliance.
Traditional rubber foam formulas struggle with uneven cell distribution, leading to pockets of high heat transmission. Our research and development center actively implements gas-injection extrusion technologies that ensure micro-cells are distributed evenly (density range of 40-55 kg/m³). By controlling the cell structure at the molecular level, we limit water vapor absorption, maintaining a stable thermal conductivity coefficient over the lifetime of the installation.
Additionally, our production features customized inline vulcanizers that prevent structural collapse during curing, meaning that even a 50mm thick sheet roll retains its high mechanical elasticity and recovery factor (>80%).
Use the matrix below to cross-reference our performance metrics against your local building and chemical industry codes.
| Performance Indicator | Technical Value / Range | Standards Met |
|---|---|---|
| Material Formulation | Elastomeric Nitrile-Butadiene Rubber & Polyvinyl Chloride (NBR/PVC) | ISO 9001, RoHS, REACH |
| Nominal Thermal Conductivity ($\lambda$) | $\le 0.032 \text{ W/(m}\cdot\text{K)}$ at $-20^\circ\text{C}$ | $\le 0.034 \text{ W/(m}\cdot\text{K)}$ at $0^\circ\text{C}$ | ASTM C518, ISO 8301 |
| Water Vapor Permeability Factor ($\mu$) | $\ge 10,000$ (integrated vapor barrier) | BS EN 12086, ASTM E96 |
| Fire Classification & Safety | Class 0 / Class 1 (Fire Retardant, Self-Extinguishing) | BS 476 Part 6 & 7, UL94 V-0, GB 8624 |
| Operational Temperature Thresholds | $-40^\circ\text{C}$ up to $+105^\circ\text{C}$ (Cryogenic series down to $-200^\circ\text{C}$) | ASTM C411, EN 14706 |
| Standard Density | $40 - 55 \text{ kg/m}^3$ | ASTM D1622 |
| Compression Recovery Resilience | $\ge 80\%$ | ASTM D3574 |
Looking toward 2030, the insulation industry must phase out compounds that risk releasing harmful halogens under high heat. Kingflex is actively developing advanced formulas, prioritizing three key technological pillars:
Exported to over 66 countries, Kingflex products undergo third-party structural testing to verify fire safety and environmental compatibility.
BS 476 Certification
ISO 9001 Standard
UL94 Rating Proof
RoHS & REACH Compliance
Our quality assurance workflow runs on a strict serialization system. Every batch of raw nitrile latex, PVC resin, and blowing agent is assigned a unique tracking code. This identifier is printed directly onto the protective backing film of our insulation sheets, ensuring full supply chain transparency from procurement to installation.
See our insulation sheets, pipes, and cryogenic configurations in action across major industrial and commercial installations.
Compare standard configurations for elastomeric rubber foam sheets, rolls, and pre-formed pipe insulations below.
Kingflex Standard Dimension
1. Foams evenly and fully, closed cell rate over 98%, excellent thermal insulation.
2. Fully closed-cell structure, low moisture absorption, stable long-term thermal conductivity.
3. Compression resilience over 80%.
4. Flame retardant, self-extinguishing off fire.
5. Low thermal conductivity, high moisture resistance factor.
Central air conditioning duct insulation, wall and roof acoustic panels, industrial plant steam piping jacket, and rail transit carriage floor damping.
Kingflex Standard Dimension
1. Foams evenly and fully, closed cell rate over 98%, excellent thermal insulation.
2. Professional pipe spraying equipment ensures even coating.
3. Compression resilience over 80%.
4. Flame retardant, self-extinguishing off fire.
5. Low thermal conductivity, high moisture resistance factor.
6. Greatly reduce pipe freezing and cracking risks.
A/C condensate pipework, chilled water distribution circuits, domestic hot water system loops, and chemical process plant fluid lines.
Explore our main product lines designed to meet structural, chemical, acoustic, and thermal requirements.
Standard wall thickness pre-cut pipe insulation for rapid installation on copper and steel lines.
Integrated anti-corrosion barrier protects underlying carbon steel and copper pipes.
High flexibility composition allows quick bending around joints and valves.
UV resistant exterior skin, ideal for indoor utility routes and covered outdoor setups.
Low-density micro-cell formulation optimized for maximum thermal resistance values.
Class 0 flame spread rating designed specifically for strict high-rise ventilation shafts.
Comprehensive system design incorporating specialty sealants and joint tapes.
Optimized glass-transition point resists embrittlement under deep freezing temperatures.
Heavy density construction limits expansion and contraction under cryogenic cycles.
Multi-layer system application sheets, ideal for LNG tanks and vaporizers.
High-density mineral fiber boards for high-temperature furnace lining applications.
Reinforced wire mesh industrial mineral blankets designed for thermal backup structures.
Our operational capabilities extend beyond standard materials delivery to ensure long-term system integrity.
With 5 automated assembly lines yielding over 600,000 cubic meters annually, we supply custom thicknesses, pre-cut pipe shapes, and pre-applied adhesive coatings for complex industrial projects.
Read More Details >We deliver energy-saving insulation systems for HVAC, chemical, and building industries, prioritizing thermal efficiency, cold preservation, and acoustics.
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Comprehensive engineering and procurement answers regarding elastomeric rubber foam insulation.
Advanced foil-laminated sheets, cryogenic materials, and pre-formed nitrile tubes for specialized engineering applications.
