Engineered to prevent moisture ingress, reduce heat loss, and survive rigorous thermal demands across HVAC, Cryogenics, and Industrial process pipelines.
Elastomeric insulation (specifically NBR/PVC-based formulation) represents a major advancement in thermal protection. Unlike open-cell products such as fiberglass or rock wool, which absorb moisture, elastomeric foams have a dense, closed-cell matrix. This structure acts as a built-in vapor barrier. By keeping moisture away from pipes, it prevents corrosion under insulation (CUI)—a serious issue that costs industries billions of dollars in maintenance annually.
The global transition toward carbon neutrality is driving stricter energy regulations in HVAC systems. In cooling applications, preventing condensation is essential. The high water vapor resistance factor (μ ≥ 10,000) of high-grade elastomeric insulation helps maintain stable thermal conductivity (k-value) over its lifespan. As a result, it is widely used in residential constructions, commercial buildings, data centers, oil refineries, and marine transport operations.
Furthermore, current R&D is focused on flame-retardant properties. Modern formulations must meet strict standards like British Standard (BS 476), Class 0, and Class 1 certifications. This ensures that in a fire, the material self-extinguishes, produces minimal smoke, and avoids dripping, making it safe for crowded public spaces and industrial facilities.
Kingflex Insulation Co., Ltd. is a specialized manufacturer and trading company focused on high-performance thermal insulation products. Our research, development, and manufacturing facility is located in Dacheng, China—a major hub for green building materials. Kingflex operates as an energy-saving, environmentally focused enterprise that integrates engineering design, raw material synthesis, mass production, and international logistics.
Established by the Jinwei Group, which has over 40 years of history, Kingflex carries forward a long manufacturing legacy. Jinwei Group, founded in 1979, was the first manufacturer of thermal insulation materials north of the Yangtze River. Decades of engineering experience have shaped our specialized production techniques, allowing us to supply large-scale global projects with highly reliable insulation solutions.
Our workforce consists of 230 manufacturing specialists, 6 international sales consultants, and 8 dedicated research and development engineers. This team focuses on improving thermal performance, optimizing fire safety ratings, and developing custom solutions for ultra-low temperature and cryogenic processes.
To serve clients worldwide, Kingflex insulation products undergo thorough testing to meet various international standards. Our materials hold certifications including BS 476, CE, REACH, RoHS, UL94, and ASTM. This ensures compliance with local fire safety, chemical restriction, and environmental codes across Europe, the Americas, and the Asia-Pacific region.
Our R&D team works closely with testing labs to refine NBR formulations, ensuring they perform consistently at temperatures down to cryogenic ranges (for liquefied gas transport) and up to 105℃ for steam and heating systems. Each production batch is tracked to maintain quality control from raw materials to the finished rolls or pipes.
How we leverage advanced automation, industrial clusters, and scalable logistics to support major commercial and infrastructure projects worldwide.
Kingflex operates 5 large-scale automated assembly lines with an annual capacity exceeding 600,000 cubic meters. We are a designated supplier for major energy, power generation, and chemical projects. Advanced automation helps maintain uniform foam density and cell structures across high-volume orders.
By consolidating processing, warehousing, and shipping operations, we manage seasonal fluctuations in raw materials and logistics. This enables us to maintain fast production schedules and stable pricing for distributors, contractors, and industrial buyers worldwide.
Verify performance thresholds, dimensional tolerances, and temperature ratings for building and industrial piping projects.
Our elastomeric sheet rolls are designed for large pipes, air ducts, tanks, and irregular surfaces. The closed-cell structure prevents heat transfer and condensation. The flexible design allows for quick installation on ducts, building walls, and industrial enclosures.
| Parameters | Value / Specifications |
|---|---|
| Material Composition | Premium Nitrile Butadiene Rubber (NBR) & Polyvinyl Chloride (PVC) blend | Thickness Range | 6mm, 9mm, 13mm, 15mm, 19mm, 25mm, 32mm, 40mm, 50mm |
| Core Material Density | 40 - 55 kg/m³ |
| Thermal Operating Range | -40℃ to 105℃ (Extended range available for Cryogenic environments) |
| Closed Cell Ratio | ≥ 98% |
| Water Vapor Diffusion Resistance | μ ≥ 10,000 (Built-in vapor barrier) |
Extruded under controlled pressure, these tubes provide protective sleeves for copper, steel, and plastic pipes. They are commonly used in central air-conditioning water pipelines, industrial steam lines, chemical process systems, and solar water installations.
| Parameters | Value / Specifications |
|---|---|
| Material Formulation | NBR/PVC Elastomeric Foam Base |
| Wall Thickness | 9mm, 13mm, 15mm, 19mm, 25mm, 30mm, 40mm |
| Inner Diameter (ID) Range | 6mm up to 114mm (Accommodates standard pipes) |
| Core Material Density | 40 - 55 kg/m³ |
| Service Operating Range | -40℃ to 105℃ |
| Safety & Fire Rating | Self-extinguishing, complies with BS 476 Class 0 / Class 1 |
Controls condensation and reduces thermal loss in residential and commercial air ducts, chilled water lines, and HVAC pipework.
Provides stable thermal control, noise reduction, and corrosion protection for high-temperature pipelines and chemical transport channels.
Maintains high thermal resistance under deep-freezing conditions, protecting LNG systems, cold chains, and specialized process lines.
Explore our main product line, featuring specialized solutions from flexible elastomeric tubes to heavy-duty rock wool boards.
Understand the commercial factors and quality criteria that determine the total cost of ownership (TCO) for global supply chains.
For procurement managers, wholesalers, and EPC contractors, purchasing thermal insulation from China involves balancing unit costs with quality standards, freight optimization, and project timelines. While local prices may look appealing, understanding the factors behind the Kingflex elastomeric insulation pricelist helps ensure a reliable supply chain.
1. Formulation Grade and Thermal Performance: The ratio of NBR to PVC determines the physical properties of the foam. Higher NBR content improves flexibility, temperature resistance, and closed-cell density. Premium products designed for critical HVAC applications or ultra-low temperatures cost more than basic PVC alternatives, but offer long-term savings by reducing CUI risk and energy loss.
2. Certification Compliance: Meeting regional fire and emissions standards (such as BS 476, ASTM E84 Class A, or CE Markings) requires precise manufacturing controls. Certifications can affect production cost structures, but are essential for passing building inspections in strict regulatory markets.
3. Packaging and Freight Optimization: Foam insulation contains a large volume of air, making shipping space optimization crucial. Kingflex uses compression packaging for sheet rolls to reduce shipping volumes by up to 50%, helping to lower ocean freight costs per cubic meter.
| Insulation Sub-Type | Common Thicknesses | Primary Pricing Drivers | Optional Upgrades Available |
|---|---|---|---|
| Standard NBR/PVC Foam Rolls | 6mm to 50mm | Raw NBR market cost, foaming agent purity, overall foam density | Self-adhesive backing, protective vapor-retarder coatings |
| Class 0 / Class 1 Specialized Sheets | 9mm to 40mm | Fire retardant additive concentrations, emission testing protocols | Reinforced scrim, aluminum foil cladding (extra mechanical protection) |
| Cryogenic System Foam Shells | Multi-layered profiles | Low-temperature polymer chemistry, custom dimensions | High-density outer shells, vapor-barrier membranes |
| Extruded Insulation Tubes | ID 6mm to 114mm | Extrusion speed, outer surface uniformity, wall thickness | Slit-and-seal configurations for quick field installation |
Our organization is built on teamwork. The Kingflex team works toward a shared goal of delivering reliable products and technical support to our clients.
From initial design consultation to final shipping, our engineers, logistics coordinators, and international sales consultants help coordinate delivery schedules. This supports seamless project execution for commercial developments and heavy industrial installations worldwide.
Technical guidance and application advice on elastomeric closed-cell insulation systems for project planners and procurement teams.
Reviewed communication transcripts and project milestones from our active export partnerships across Europe, South America, and Southeast Asia.
Photos of our elastomeric sheets and extruded pipes in use on central HVAC systems, chemical lines, and maritime pipelines globally.
Explore specialized elastomeric products designed for ultra-low temperature, cryogenic, and high-performance NBR applications.
Kingflex