Kingflex
Explore our core product lineup engineered for optimal thermal stability, anti-condensation, and high energy efficiency.
An analytical guide detailing thermo-physical metrics, global procurement guidelines, and modern manufacturing paradigms in China Dacheng Green Technology Zone.
In modern commercial HVAC/R systems, maintaining thermal equilibrium along refrigerant transport pipelines is essential. Condensation, thermal bridging, and structural thermal degradation are constant threats to overall thermodynamic efficiency. Elastomeric rubber-plastic foam insulation—specifically formulated with a dense matrix of closed microcells (rate exceeding 98%)—functions as a dual-action thermal barrier.
According to Fourier’s Law of Heat Conduction, heat transfer is minimized when gaseous convection is restricted inside solid matrices. In Kingflex NBR/PVC elastomeric formulations, these tiny, closed-cell cavities trap dry air, which exhibits extremely low thermal conductivity ($\lambda \le 0.034$ W/m·K at 0°C).
The moisture resistance factor ($\mu \ge 10,000$) provides a built-in vapor barrier that prevents water ingress even in high-humidity climates, preventing structural mold and pipe corrosion.
Delivers exceptionally low heat transfer characteristics, minimizing the operating cycle requirements of compressors and reducing cumulative HVAC system energy draw.
High structural resilience (compression recovery $\ge 80\%$) helps absorb pipe vibrations and acoustical noise generated by commercial chillers and flow pumps.
The global thermal insulation landscape is undergoing a structural shift driven by green building ratings (such as LEED v4.1, BREEAM, and DGNB) and strict energy consumption regulations. Engineers and procurement officers are moving away from traditional fibrous materials toward elastomeric closed-cell compounds.
For international EPC contractors, developers, and HVAC distributors, securing high-performing insulation materials requires careful verification of certified test metrics. Price per cubic meter must be balanced against mechanical longevity, installation time, and certification status.
| Property Matrix | NBR/PVC Elastomeric Foam | Standard Rock Wool Insulation | Polyethylene (PE) Foam |
|---|---|---|---|
| Thermal Conductivity (0°C) | ≤ 0.034 W/(m·K) | ≤ 0.038 W/(m·K) | ≤ 0.037 W/(m·K) |
| Vapor Permeability Index ($\mu$) | ≥ 10,000 (Built-in barrier) | 1.0 (Requires outer jacket) | ≥ 3,000 (Medium vapor risk) |
| Temperature Work Range | -40℃ to 105℃ (Up to -200°C for Cryo) | -260℃ to 650℃ | -40℃ to 90℃ |
| Physical Flexibility | Excellent, highly elastic | Brittle, requires casing | Semi-rigid, bends crack |
| Installation Complexity | Very low (Sleeve or self-adhesive) | High (Requires wrapping & cladding) | Low to Medium |
Kingflex addresses this by offering completely transparent testing records under internationally recognized bodies (such as SGS and TÜV). This ensures compliance with regional standards and accelerates custom clearance and on-site building inspections.
Located in Dacheng, China—the capital of green-building materials—our advanced production center combines large-scale capacity with strict quality control.
At present, Kingflex runs 5 large-scale, automated continuous extrusion assembly lines. These lines integrate real-time temperature control, automated gas dosing, and inline dimensional calibration. This level of automation keeps product dimensions precise across long production runs, which reduces installation issues in the field.
As an energy-saving and environmentally friendly enterprise recognized by the Ministry of Energy, the Ministry of Electric Power, and the Ministry of Chemical Industry, we maintain full traceability from raw polymer mixing to final packaging. Every batch undergoes rigorous quality assurance tests, including thermal conductivity measurements, fire resistance checks, and density monitoring.
Kingflex Insulation Co., Ltd. is a professional manufacturing and trading combo for thermal insulation products. Our research, development, and production facility is located in well-known capital of green-building materials in Dacheng, China.
Kingflex is established by Jinwei Group which is more than 40 years history. Jinwei Group is established in 1979. It was the first manufacturer of thermal insulation materials north of the Yangtze River.
Our core mission is to supply customers all over the world with a full set of energy saving insulation system solutions. We serve as an integrated solution provider of thermal insulation, cold insulation, and noise reduction for buildings and industrial plants.
Our employees are amazing in their own right, but together they are what makes Kingflex such a fun and rewarding place to work. The Kingflex team is a tight-knit, talented group with a shared vision of giving consistently first class service for our clients. We have 8 professional engineers in our R&D Department, 6 professional international sales specialists, and 230 skilled workers in the production department.
We produce standard and customized sizes tailored to regional HVAC codes, cryogenic setups, and industrial pipelines.
Material Matrix: High-grade NBR/PVC elastomer base with eco-friendly foaming chemistry.
Thickness Range: 6mm to 50mm
Density Spectrum: 40 to 55 kg/m³
Service Temperature Limits: -40℃ to 105℃
Material Matrix: High-grade NBR/PVC elastomer base with eco-friendly foaming chemistry.
Thickness Range: 9mm to 40mm
Inner Diameter (ID): 6mm to 114mm
Density Spectrum: 40 to 55 kg/m³
Service Temperature Limits: -40℃ to 105℃
Our high-performance elastomeric thermal solutions are deployed in key sectors, protecting infrastructure integrity in diverse environmental conditions.
Effective thermal insulation for chilled water lines, hot water distribution networks, and large ventilation ducts. Minimizes condensation risks and prevents structural moisture damage in ceiling voids.
Thermal and acoustic insulation integrated into wall assemblies, floor plates, roofing structures, and basements. Helps projects meet green building standards like LEED and BREEAM.
Protects heat exchangers, process water supply lines, steam pipe networks, and chemical storage reservoirs from thermal losses and structural icing.
Protects metal pipelines in offshore platforms, chemical refineries, and storage depots from corrosion under insulation (CUI) and ambient heat load.
Specifically formulated for ultra-low temperature applications (LNG shipping, cold stores, cold chain logistics), maintaining structural flexibility at sub-zero temperatures.
Compact thermal and acoustic barrier insulation for railway passenger cars, cargo holds, shipping lanes, and heavy transport cabins.
Select from our comprehensive list of certified elastomeric, rock wool, and glass wool insulation systems.
We prioritize transparency and maintain active partnerships with clients in over 66 countries.
Inside Dacheng manufacturing facility, where raw polymers are mixed, extruded, foamed, and inspected.
Technical guidance and procurement support for Kingflex products.
It is mainly used for HVAC ducts, air conditioning pipes, building thermal insulation, industrial pipeline cold insulation, and sound insulation. Its closed-cell structure helps limit thermal conduction and prevent moisture infiltration.
Yes, our rubber foam insulation products are fire retardant and meet safety standards for building and industrial projects. They are certified under BS 476, ASTM E84, and UL 94, ensuring low flame spread and self-extinguishing properties.
Rubber foam is flexible, closed-cell, and moisture-proof, making it suitable for HVAC, chilled water lines, and anti-condensation applications. Rock wool is a fibrous material with high-temperature resistance and fire protection properties, typically used for high-temperature industrial steam lines.
Yes, we provide full OEM and ODM services. We can customize sheet thicknesses, pipe inner diameters, surface finishes (such as aluminum foil laminates), and self-adhesive backings to meet specific project guidelines.
Our products have passed BS 476, CE, REACH, ROHS, UL94, ASTM, and other international certifications, ensuring compliance with global environmental and safety standards.
Yes, every production run is marked with batch codes. Our quality assurance team maintains detailed raw material and manufacturing records, ensuring traceability from raw inputs to the final product.
We can produce thicknesses ranging from 6mm to 50mm, allowing engineers to choose the correct material thickness to prevent condensation based on local ambient temperatures and relative humidity.
Under standard operating conditions within our specified temperature limits (-40℃ to 105℃), the typical service life is 10 to 15 years, with low degradation of thermal conductivity over time.
NBR/PVC provides a balance of thermal efficiency, flexibility, and oil resistance at a competitive price, making it suitable for indoor and standard HVAC setups. EPDM offers superior UV and ozone resistance, making it ideal for outdoor solar hot water installations and high-temperature environments.
Dacheng is an established industrial hub for green building materials. This concentration of raw material suppliers, specialized tooling workshops, and logistics networks helps manufacturers optimize production costs and maintain reliable supply chains.
Explore our technical insulation line, engineered for cryogenic environments, high humidity zones, and specialized HVAC layouts.
