Discover our selection of advanced NBR/PVC and specialty elastomeric foam materials certified for global performance and compliance standards.
Kingflex Insulation Co., Ltd. is a leading professional manufacturer and trading enterprise specializing in cutting-edge thermal insulation products. Founded by the Jinwei Group, our origins track back to 1979 as the pioneer manufacturer of thermal insulation materials north of the Yangtze River. Today, we stand as an emblem of quality and energy-efficient building system design.
Located in Dacheng, the world-renowned capital of green-building materials in China, our operations integrate research, development, state-of-the-art manufacturing, global trade, installation guidance, and dedicated post-sale advisory services. Guided by our core commitment to absolute energy conservation, we supply optimal systems for high-performance buildings, mechanical pipelines, and heavy-duty industrial facilities.
Operating at the cutting edge of industrial automation, our manufacturing plant delivers structural reliability and cost efficiencies that stabilize global procurement.
Our production plant is equipped with 5 major automatic assembly lines, generating an annual manufacturing output of over 600,000 cubic meters. Owing to our strict raw material consistency and proprietary formulation control, Kingflex is a designated production enterprise certified by the Ministry of Energy, the Ministry of Electric Power, and the Ministry of Chemical Industry.
Through our digitalized manufacturing infrastructure, we ensure precise cell-size distributions during the elastomer expansion process. This ensures that every roll or pipe produced has uniform density, lower thermal conductivity, and high resistance to water vapor transmission.
Our production workforce of over 230 workers, supported by 6 international sales specialists, facilitates streamlined customer service. Every shipment is fully traceable back to raw material batches to ensure reliability in large-scale infrastructure deployments.
Engineered to strict tolerances, our elastomeric NBR/PVC compositions balance flexibility, durability, and low thermal conductivity.
| Parameter | Value / Specification |
|---|---|
| Material Base | Nitrile Butadiene Rubber & Polyvinyl Chloride (NBR/PVC) blend |
| Thickness Range | 6mm to 50mm |
| Core Density | 40 - 55 kg/m³ |
| Service Temperature Limit | -40℃ to +105℃ |
| Closed-Cell Content | ≥ 98% |
| Compression Resilience | ≥ 80% |
| Parameter | Value / Specification |
|---|---|
| Material Base | NBR/PVC Elastomeric Foam with active cross-linking agents |
| Inner Diameter (ID) | 6mm to 114mm |
| Thickness Limit | 9mm to 40mm |
| Thermal Conductivity | ≤ 0.034 W/(m·K) at 0℃ |
| Vapor Barrier Factor (μ) | ≥ 7,000 |
| Flame Spread Rating | Class 0 / Class 1 (BS 476), Self-extinguishing (UL 94 V-0) |
Supporting large-scale construction, chemical processing, and cold-chain distribution infrastructures worldwide.
Our elastomeric NBR/PVC foam is designed for chilled water systems, HVAC ducts, and central air systems. It provides continuous vapor barrier performance, prevents condensation on cool surfaces, and minimizes thermal loss to help lower carbon footprints.
Engineered for ultra-low temperature (ULT) and cryogenic environments, our alkadiene and cryogenic rubber formulations maintain flexibility and structural integrity down to -200°C. These systems are used in LNG terminals, ethylene pipelines, and specialized petrochemical operations.
Designed with open-cell configurations, our sound-absorbing elastomeric boards effectively dampen sound transmission. For mechanical spaces, gyms, and heavy machinery, our high-density shock-absorbing rubber pads isolate kinetic energy and dampen low-frequency structural noise.
Decarbonization is transforming the thermal insulation market. We are adapting our technology to meet these evolving requirements.
We are actively phasing out conventional HCFC blowing agents. Our engineering teams are refining third-generation chemical expansion technologies, incorporating high-pressure nitrogen mechanisms to achieve zero-GWP and zero-ODP foam output.
To reduce thermal conductivity below 0.030 W/(m·K), we are testing nano-silica aerogel dispersions within our NBR/PVC polymer matrices. This allows for thinner layers while maintaining equivalent thermal performance.
Our long-term development plans focus on using bio-based raw materials and establishing reclamation routes for scrap materials generated during construction, returning them directly to our closed-loop compounding systems.
Ensuring project validation and safety compliance through globally recognized standards and testing protocols.
To support global imports and specifications, our entire product range is regularly tested by third-party verification agencies. Kingflex is certified to comply with several key regulatory structures:
Our baseline prices are adjusted according to raw polymer costs (NBR, PVC), blowing agent indexes, and total procurement volumes. To maintain cost efficiency, we offer transparent scaling configurations:
Find professional answers to technical queries, design choices, and compliance inquiries.
Elastomeric NBR/PVC rubber foam is primarily used to isolate HVAC ductwork, commercial piping, refrigerant lines, and process equipment. Its closed-cell structure prevents vapor condensation and maintains thermal efficiency in both building HVAC systems and industrial facilities.
Yes. Our materials include flame-retardant additives that support self-extinguishing properties, meeting BS 476 Class 0 and Class 1, and UL 94 V-0 flame ratings. This limits smoke release and prevents fire propagation through utility shafts.
Rubber foam is a flexible, closed-cell material that offers high resistance to moisture migration without requiring an external vapor jacket. It is ideal for cold-supply pipes and HVAC ducts. Rock wool is a fibrous mineral-based material designed for high-temperature resistance, making it suitable for hot industrial pipelines and firewalls.
Yes, we provide full OEM and custom manufacturing services. We can customize density profiles, inner pipe diameters (from 6mm to 114mm), sheet roll thicknesses (from 6mm to 50mm), and supply pressure-sensitive adhesive backing or protective aluminum foil surfaces.
Our products are certified under BS 476, CE, REACH, RoHS, UL 94, and ASTM. This ensures compliance with structural fire safety regulations and environmental guidelines regarding chemical composition and VOC limits.
Yes, every production batch is logged with a unique identification code. This allows us to trace raw materials, vulcanization times, density tests, and quality reports for every shipment.
Under recommended operating temperatures (-40°C to +105°C) and correct installation, our indoor elastomeric insulation typically lasts 10 to 15 years. For outdoor installations, an additional UV-protective coating or cladding is recommended to prevent aging.
Our closed-cell rate of over 98% keeps water vapor out, maintaining stable thermal conductivity (k-value). Open-cell alternatives can absorb moisture, which increases thermal transfer and degrades performance.
Standard product orders are typically produced and dispatched within 10 to 15 working days. Large custom orders or OEM requests may take slightly longer, depending on production scheduling and materials.
No. Our NBR/PVC formulations are manufactured with low halogen content to prevent galvanic corrosion. Keeping the pipe surface dry further protects metallic substrates from corrosion under insulation (CUI).
Explore our technical insulation lines, including cryogenic-resistant and rock wool products designed for demanding operating environments.
Connect with our technical R&D and global export division to discuss material parameters, design drawings, testing reports, or bulk project pricing.
Contact Technical Sales
Kingflex