Explore our foundational range of elastomeric NBR/PVC insulation pipes, sheet rolls, and cryogenic engineering solutions.
Kingflex Insulation Co., Ltd. represents the peak of thermal insulation engineering in China. As a premier manufacturer and trading conglomerate, we are strategically based in Dacheng, China—historically recognized as the global cluster for green building materials.
Established under the aegis of the Jinwei Group (founded in 1979, holding over 40 years of pioneering history), Kingflex inherited a legacy of technical brilliance. Jinwei Group was the first manufacturer of thermal insulation materials north of the Yangtze River, paving the way for China's modern HVAC raw material systems.
Today, our facility focuses on energy-saving, environmentally conscious research, development, and high-volume output. We don't just supply products; we provide end-to-end, integrated solutions spanning technical consultation, R&D custom formulations, detailed installation guidance, and structured post-sale support.
As green building certifications (LEED, BREEAM) tighten and global energy prices fluctuate, structural HVAC thermal efficiency has transitioned from a utility to a core regulatory requirement.
International mechanical, electrical, and plumbing (MEP) contractors seek manufacturers who can balance cost efficiency with stringent safety certifications. High performance elastomeric NBR/PVC foam insulation is the industry standard for preventing condensation, managing thermal loss, and providing structural acoustics.
Our state-of-the-art automatic production capacity allows Kingflex to supply massive volumes of Class 0 and Class 1 fire-rated insulation materials at competitive factory pricing. By offering a standardized pricelist coupled with highly customizable thickness profiles (from 6mm up to 50mm), we streamline global logistics pipelines for complex industrial plants, airports, cleanrooms, and commercial complexes.
Standardized parameters for Kingflex Black Rubber Foam Insulation Sheet Rolls & Pipes
| Parameter | Insulation Sheet Roll Specification | Insulation Pipe Specification |
|---|---|---|
| Material Base | Premium NBR/PVC (Nitrile Butadiene Rubber / Polyvinyl Chloride) blend | Premium NBR/PVC blend with advanced extrusion foaming |
| Thickness Range | 6mm to 50mm | 9mm to 40mm |
| Inner Diameter (ID) | N/A (Flat sheet/roll format) | 6mm to 114mm (Accommodates standard copper & steel pipe dimensions) |
| Density | 40 - 55 kg/m³ | 40 - 55 kg/m³ |
| Service Temperature | -40℃ to 105℃ | -40℃ to 105℃ |
| Closed-Cell Rate | Over 98% (Ensures low moisture absorption & stable thermal conductivity) | Over 98% (Limits convection heat transfer within the material) |
| Flame Retardancy | Self-extinguishing, BS 476, UL94, ASTM compliance | Self-extinguishing off fire |
| Key Advantages | High compression resilience (>80%), low thermal conductivity | Integrated vapor barrier, zero pipe freezing, anti-vibration |
Our raw material compounding uses a unique vulcanization technique to secure a highly cross-linked, uniform closed-cell structure. With a closed-cell rate exceeding 98%, the material forms a permanent barrier against moisture intrusion, preventing condensation and corrosion under insulation (CUI) on air ducts and cold water pipelines.
The elasticity of Kingflex elastomeric foam simplifies installation on compound joints, valves, T-junctions, and round/rectangular air ducts, dramatically decreasing labor costs on-site.
Tailored thermodynamic systems engineered for critical infrastructure and demanding industrial sectors.
Provides insulation for supply and return air ducts, fan coil units, and central HVAC components. Ideal for cleanroom systems due to low particle emission and zero fiber shedding.
Specialized systems for ultra-low temperature projects, LPG/LNG storage, chemical processing plants, and food chain distribution networks requiring thermal protection at extreme temperature bounds.
Acoustic attenuation and thermal insulation for high-occupancy environments, including hotels, hospitals, transport hubs, and high-rise apartments, with a focus on fire safety compliance.
Our NBR/PVC elastomer systems are extensively utilized across several critical vectors:
Our workforce is our primary asset. The Kingflex team operates with a unified vision: to deliver first-class insulation systems that reduce energy consumption globally.
Our organizational framework comprises:
We test every production run to ensure compliance with international construction codes.
To operate seamlessly in global markets, Kingflex products undergo third-party auditing and testing. We maintain compliance with: BS 476 (Parts 6 & 7), CE Certification, REACH, RoHS, UL94, and ASTM standards.
We run a rigorous raw material tracking and manufacturing process control system. Every batch of elastomeric foam leaving our factory is traceable, ensuring long-term accountability for project developers and engineering partners.




Kingflex insulation systems are deployed across commercial, municipal, and industrial projects worldwide.
Client relationships are built on consistent performance and reliable logistics. We work closely with international engineering consultants to verify every product parameter before shipment.
See our communication logs showcasing customer satisfaction, order updates, and technical coordination.





A look at our automated extrusion, foaming, cutting, and packaging processes.












Providing high-efficiency thermal, cryogenic, and acoustic insulation solutions to global industries.
Kingflex runs 5 large automatic assembly lines, yielding an annual capacity exceeding 600,000 cubic meters. This high production volume makes us a key supplier designated by critical energy, electric power, and chemical authorities across China and international economic corridors.
We manage bulk raw materials directly to insulate ourselves from market fluctuations, maintaining stable pricelists for global MEP contracts even during supply shocks.
We focus on eco-friendly, energy-efficient engineering. Our factory processes minimize ozone-depleting materials (ODP) and global warming potential (GWP), meeting strict environmental guidelines.
We provide complete insulation, cold insulation, and acoustic reduction solutions that help customers meet green building standards, reducing long-term energy costs.
Technical details, compliance standards, and product customization options.
Select specialized models of NBR/PVC sheets, flexible tubing, and cryogenic components for high-efficiency HVAC operations.