Engineered for superior thermal control, moisture resistance, and acoustics
High flexibility and excellent anti-condensation properties for cooling systems.
Decibel-reducing cellular structure designed for noise mitigation in commercial pipelines.
Specialized low-temperature elastomeric compound for ultra-cold process lines.
True closed-cell formulation ensuring stable thermal conductivity over decades.
Highly adaptable specification fit for construction, petrochemical, and HVAC industries.
Advanced water resistance coefficient preventing moisture ingress and mold growth.
Protects metal piping against Corrosion Under Insulation (CUI) in coastal climates.
Versatile large-format sheets for large-diameter ductwork and industrial tanks.
Kingflex Insulation Co., Ltd. stands as a premier manufacturing and trading powerhouse, delivering end-to-end thermal and acoustic insulation configurations. Rooted in Dacheng, China—historically recognized as the capital of eco-friendly building materials—we operate as a pioneering energy-saving organization. Our corporate ethos revolves around high efficiency, reduced carbon footprints, and complete ecological alignment.
Established as an elite extension of the Jinwei Group, which holds a heritage stretching back to 1979, Kingflex has built upon decades of polymer expertise. As the very first major manufacturer of thermal insulation materials north of the Yangtze River, we have pioneered the transition from basic insulation systems to advanced, high-tech closed-cell elastomers.
Empowering critical projects in building construction, defense, petrochemicals, and aerospace
Our infrastructure holds designated vendor status for national entities including the Ministry of Energy, the Ministry of Electric Power, and the Ministry of Chemical Industry. Over the past 16 years, we have exported to sixty-six countries, providing high-performance rubber foam insulation that reduces thermal loss, prevents condensation, and stabilizes process safety in harsh climates.
Why Closed-Cell NBR/PVC leads global energy-saving specifications
Conventional open-cell insulations, like fiberglass or rock wool, rely on trapped air pockets to resist thermal transfer. However, when exposed to moisture, water vapor easily infiltrates these cavities, resulting in a precipitous drop in thermal resistance. Each 1% moisture gain by volume can reduce insulation performance by up to 7.5%.
Kingflex Isolante Tubi utilizes a highly homogeneous, closed-cell NBR/PVC matrix (closed-cell rate exceeding 98%). The isolated micro-bubbles act as built-in thermal barriers and water vapor retarders. By locking out moisture, the material maintains its target thermal conductivity ($\lambda \le 0.035 \text{ W/(m}\cdot\text{K)}$ at $0^\circ\text{C}$) over its entire operational lifetime of 10 to 15 years.
CUI is a leading hazard across petrochemical, industrial, and marine piping applications. When humidity penetrates insulation layers and pools on the underlying metal, electrochemical oxidation occurs rapidly, resulting in pinhole leaks and structural failure.
Our corrosion-resistant rubber foam insulation tubes do not contain corrosive free-halogens or acidic compounds. Combined with a high moisture resistance factor ($\mu \ge 10,000$), the material seals the outer pipe surface against airborne chlorides and moisture, offering protection against local chemical attack.
| Property / Characteristic | Kingflex Sheet Rolls | Kingflex Insulation Tubes (Isolante Tubi) | Testing Methods & Compliance |
|---|---|---|---|
| Base Material Formulation | NBR/PVC Elastomeric Foam | NBR/PVC Elastomeric Foam | ASTM C534, EN 14304 |
| Wall Thickness Range | 6mm to 50mm | 9mm to 40mm | Standard Production Calibrated |
| Inner Diameter (ID) | N/A (Flat sheet/rolls) | 6mm to 114mm | Fits standard copper & steel piping |
| Apparent Density Range | 40 - 55 kg/m³ | 40 - 55 kg/m³ | GB/T 6343, ASTM D1622 |
| Service Temperature Limit | -40℃ to 105℃ (-40°F to 221°F) | -40℃ to 105℃ (-40°F to 221°F) | ASTM C411 (Cryogenic grades available) |
| Thermal Conductivity ($\lambda$) | ≤ 0.035 W/(m·k) at 0℃ | ≤ 0.035 W/(m·k) at 0℃ | ASTM C177, ISO 8302 |
| Water Vapor Permeability | μ ≥ 10,000 (Built-in vapor barrier) | μ ≥ 10,000 (Built-in vapor barrier) | BS EN 12086, ASTM E96 |
| Fire Safety Rating | Class 0 / Class 1, Self-extinguishing | Class 0 / Class 1, Self-extinguishing | BS 476 Part 6 & 7, UL94 V-0, ASTM E84 |
Tailoring elastomeric technology to major industrial sectors
Large commercial complexes, hotels, and hospital facilities require continuous cooling performance and condensation control. Our closed-cell rubber insulation prevents sweat dripping from cold lines, protecting ceiling assemblies and drywalls from mold.
Operating cryogenic piping (down to -200°C) demands specialized insulation to prevent complete system freeze-up. Kingflex cryogenic elastomeric foam provides flexibility at ultra-low temperatures, absorbing thermal expansion and contraction without cracking.
Chemical processing installations operate in acidic or humid atmospheres. The high density and chemical inertia of our NBR/PVC blend ensures structural integrity under oil mist, dilute acids, and UV exposure when combined with aluminum foil outer jackets.
For international projects, mechanical engineering contractors, and procurement departments (EPCs), we provide streamlined trade support:
Our quality control protocol governs the production chain from raw material intake to final vulcanization. We utilize electronic batching to ensure correct polymer proportions and consistent chemical composition.
Kingflex maintains testing rigs that evaluate the physical properties of our foam products:
Transparent partnerships backed by verification
Our customer support team provides response times within 24 hours, detailed dimensional drawings, and custom logistics support to ensure your mechanical system insulation arrives on site as specified.
Decarbonization, Zero-Halogen Formulations, and Smart Insulation systems
To address safety requirements in tunnels, marine vessels, and microelectronics cleanrooms, Kingflex is expanding its halogen-free elastomeric ranges. These compositions produce low toxic fumes and minimal acid gas during combustion.
By transitioning to eco-friendly foaming gases with zero Ozone Depletion Potential (ODP) and negligible Global Warming Potential (GWP), we align our manufacturing footprint with international environmental directives.
Collaborating with sensor developers, our future roadmap includes elastomeric wraps with built-in moisture-monitoring arrays. These systems alert plant managers to moisture ingress before corrosion begins.
Expert information on installation, performance, and ordering
Proof of execution across diverse commercial and heavy industrial sites
Explore our specialized cryogenic materials, thermal tapes, and premium boards
Designed for cryogenic operations down to -200°C.
Durable aluminum foil tape for seam sealing and vapor barrier integrity.
High-density cryogenic barrier optimized for LNG terminals and plants.
Standard NBR/PVC insulation tubes for light commercial and HVAC applications.
Flat sheet boards for ductwork cladding and large equipment insulation.
Custom configurations for mechanical, marine, and architectural needs.
Provides structural flexibility and insulation for deep cold pipelines.
Nitrile foam formulation with increased thickness for strict fire safety zones.
Kingflex
