Premium NBR/PVC elastomeric rubber foam insulation configurations designed to maximize energy efficiency under international metrics.
High-density elastomeric rubber sheet rolls providing superior thermal insulation and long-term acoustic control.
Highly flexible tube insulation specifically designed for commercial HVAC ductwork, refrigeration lines, and water piping systems.
Designed for optimized sound dispersion and dampening properties in tight mechanical and building structural areas.
Industrial-grade NBR rubber insulation roll manufactured with continuous foaming processes to guarantee uniform cell density.
Offers premium resistance to ambient thermal transfer, mitigating heat exchange inside ducting systems and structural divisions.
Pioneering protective skin coating that blocks moisture infiltration, corrosion under insulation (CUI), and chemical exposure.
Premium pre-cut insulation pipes ready for instant slip-on construction layouts, saving on-site labor overheads.
Advanced elastomeric system designed for extreme cryogenic conditions such as LNG piping, vessels, and low-temp storage tanks.
In the current era of climate action, the global construction industry is moving from simple insulation materials to integrated, low-carbon, high-performance systems. At the center of this change is the partnership between Chinese supply chain networks and international green building systems. Kingflex Insulation Co., Ltd. works at the intersection of these markets, aligning its production with the strict requirements of the German Green Building Association (DGNB - Deutsche Gesellschaft für Nachhaltiges Bauen).
As a leading company under the Jinwei Group—established in 1979 as the first manufacturer of thermal insulation materials north of the Yangtze River—Kingflex brings over 40 years of industry experience. Over four decades, Jinwei Group has transitioned from basic insulation products to modern smart manufacturing, establishing Kingflex as a global partner in sustainable building envelope construction.
Kingflex's primary research, development, and manufacturing facility is located in Dacheng, China—a region recognized as a major manufacturing center for modern energy-saving building materials. This centralized ecosystem enables advanced raw material sourcing, integrated engineering research, and scalable logistics. Kingflex is designated as an authorized manufacturing enterprise by the Ministry of Energy, the Ministry of Electric Power, and the Ministry of Chemical Industry, demonstrating its technical capacity and alignment with national and international engineering standards.
Enabling zero-emission operational targets by reducing thermal bridging and thermal degradation across the lifecycle of mechanical systems.
Our formulations maintain a low and stable thermal conductivity of ≤0.034 W/(m·K) at 0°C. This helps minimize energy loss across industrial cold and heat loops, supporting DGNB energy efficiency goals.
With a high water vapor diffusion resistance factor, our material prevents internal cell condensation. This design reduces moisture accumulation, protecting system components from structural degradation.
We work to minimize Volatile Organic Compounds (VOCs) and hazardous outgassing. This aligns our products with healthy indoor environment requirements, supporting target points for DGNB indoor environmental quality certifications.
Kingflex insulation supports green building targets by improving energy retention in HVAC systems. When insulation materials degrade, systems consume more energy to maintain standard temperatures, increasing Scope 2 carbon emissions. Our closed-cell elastomeric structures are formulated to maintain stable physical properties over long operational lifespans of 10 to 15 years, reducing maintenance cycles and raw material replacement needs.
Integrated systems engineered to perform in demanding commercial, industrial, and high-performance environments.
In high-humidity commercial structures, chilled water lines are susceptible to moisture condensation and thermal gain. Kingflex NBR/PVC elastomeric tube insulation offers a reliable solution. Extruded with a uniform closed-cell structure, the material requires no additional vapor barriers, helping prevent condensation on mechanical pipes and limiting the risk of structural damage and mold growth.
Handling liquefied natural gas (LNG) at temperatures down to -200°C requires specialized insulation materials. Standard materials can crack and lose structural integrity under extreme cold stress. Kingflex's cryogenic insulation formulations maintain flexibility at low temperatures, minimizing the risk of thermal contraction stress cracking and ensuring stable performance for energy transmission lines.
Mechanical machinery and fluid movement generate noise that can travel through building structures. Kingflex's 6mm open-cell acoustic insulation helps absorb airborne noise, reducing sound transmission in air conditioning duct systems, plant rooms, and industrial enclosures.
A visual overview of our manufacturing operations, quality management processes, and research facilities.
Main Production Facility Base
Automated Extrusion & Foaming Lines
Technical R&D Team Group
Thermal Conductivity Testing Lab
Flame & Smoke Density Analysis
Microscopic Cell Structure Scan
Kingflex operates 5 modern automated production lines, optimizing material blending, extrusion control, temperature profiles, and vulcanization. Automation supports consistent cell structure across production runs, minimizing product variations and ensuring reliable quality.
Our automated systems output over 600,000 cubic meters of high-density elastomeric materials annually. This production capacity enables consistent product availability for large-scale infrastructure developments, commercial districts, and complex industrial systems.
Inbound inspections verify raw NBR, PVC, and fire-retardant additives before processing, supporting consistent quality across batches.
Sensor systems monitor wall thickness and density values during production, reducing variations across runs.
Proximity to major transport routes from Dacheng supports efficient shipping to international destinations.
Verified laboratory certifications demonstrating safety, environmental compliance, and fire performance standards.
Quality Management Systems
Thermal Performance Test Reports
Compliance & Flame Retardant Proof
Eco-Friendly Materials Declaration
Kingflex insulation systems are engineered to meet global standards, supporting international projects that require specific compliance certifications. Below is a summary of the standards our materials are tested against:
| Standard Body | Test Reference | Parameter / Certification Target | Kingflex Compliance Value |
|---|---|---|---|
| BS 476 | Part 7 & Part 6 | Surface Spread of Flame / Fire Propagation | Class 1 / Class 0 Rating Passed |
| CE / EN 14304 | European Conformity | Mechanical Product Standardization for Building Equipment | Fully Certified / Declaration of Performance Ready |
| REACH | EC Regulation 1907/2006 | Substances of Very High Concern (SVHC) Check | Non-hazardous Chemical Composition |
| RoHS | Directive 2011/65/EU | Restriction of Hazardous Materials | Lead, Mercury, Polybrominated Biphenyls Free |
| UL94 | Underwriters Laboratories | Flammability of Plastic Materials Testing | V-0 Classification Achieved |
| ASTM C534 | North American Spec | Standard Spec for Preformed Flexible Elastomeric Insulation | Type I (Tubular) and Type II (Sheet) Compliant |
Purchasing professional thermal insulation systems requires balancing upfront costs with long-term performance benefits. Our commercial offerings are structured to provide transparent options for global contractors, distributors, and OEM purchasers.
Pricing is based on dimensions, order volume, specialized coatings, and density profiles. Standard wholesale rates are calculated based on raw material market index values and production quantities.
We work to maintain clear communication with our global client base throughout the supply cycle, from order placement to shipping coordination.
Detailed technical answers regarding the application, properties, and compliance profiles of our NBR/PVC closed-cell elastomeric insulation materials.
Explore our range of low-temperature elastomeric formulations and high-thickness industrial insulation products.
Flexible cryogenic insulation designed to maintain low-temperature performance and prevent thermal cracking in extreme environments.
High-density cryogenic insulation blocks and systems designed for industrial low-temperature chemical processes.
Available in various thicknesses, these sheet rolls are designed for rapid installation on large flat or curved surfaces.
Specialized rubber foam designed for cryogenic cooling systems, cold storage facilities, and gas processing lines.
Provides low thermal conductivity in cryogenic applications, helping prevent moisture and ice build-up.
Heavy-duty pre-formed insulation pipes designed to reduce energy loss in high-temperature lines and commercial water piping.
Flexible elastomer rolls designed for wrapping large air conditioning ducts and industrial equipment surfaces.
Heavy-duty 25mm thick insulation rolls engineered for demanding thermal control and sound absorption requirements.
Kingflex