Kingflex
Kingflex
Premium grade thermal and cryogenic barrier systems engineered for reliability, safety, and strict compliance with international standards.
In modern industrial facilities and commercial infrastructure, pipeline systems serve as the critical circulatory system. Maintaining thermal efficiency, preventing surface condensation, and ensuring robust fire protection are paramount to operations. As energy standards and building regulations tighten globally, standard insulation materials no longer suffice.
This is where closed-cell elastomeric rubber foam insulation plays a pivotal role. Combining synthetic nitrile-butadiene rubber (NBR) and polyvinyl chloride (PVC), these specialized formulations provide high resistance to moisture vapor transmission, superb thermal insulation, and exceptional flame-retardant properties.
Kingflex Insulation Co., Ltd. is a leading manufacturer and trading group specializing in energy-efficient insulation materials. Located in Dacheng, China—a hub for green building technologies—our operations prioritize energy conservation and sustainability at every stage.
Our production facilities utilize five automated high-output extrusion assembly lines, giving us the capability to output more than 600,000 cubic meters of high-density rubber foam insulation annually. We operate under strict quality management processes, serving as a trusted supplier for key energy, electric power, and chemical industry programs worldwide.
With eight dedicated R&D engineers, our testing and prototyping operations continually refine the physical properties of our NBR/PVC foams. This ensures they consistently meet international flammability, environmental safety, and thermal criteria.
A comparison of our core NBR/PVC insulation sheets and pipes, engineered to resist thermal transfer and combustion.
Designed for large flat surfaces, air handling units, ducts, and large-diameter piping systems. Its high flexibility enables rapid wrapping, even around complex geometries.
| Property | Value / Standard Range |
|---|---|
| Base Material | NBR / PVC Blends (Closed-cell rubber) |
| Thickness Range | 6mm - 50mm |
| Density | 40 - 55 kg/m³ |
| Temperature Limit | -40℃ to 105℃ |
| Thermal Conductivity | ≤ 0.034 W/(m·k) at 0℃ |
| Closed Cell Content | Over 98% |
Pre-formed extruded tubes designed to slide easily onto pipelines. The smooth outer skin resists tearing and prevents environmental moisture from degrading the insulation system.
| Property | Value / Standard Range |
|---|---|
| Base Material | NBR / PVC Blends (Closed-cell rubber) |
| Wall Thickness | 9mm - 40mm |
| Inner Diameter (ID) | 6mm - 114mm |
| Density | 40 - 55 kg/m³ |
| Moisture Resistance | High vapor diffusion resistance index (μ ≥ 10,000) |
| Flame Retardancy | Self-extinguishes upon flame removal |
Even Foaming: Employs proprietary formulation technologies to guarantee a highly consistent cell structure, optimizing thermal insulation performance.
Elastic Recovery: Retains a compression resilience of over 80% to protect the material from crushing and mechanical damage during installation.
HVAC & R: Effectively prevents condensation on chilled water pipes and cold air supply lines.
Industrial Piping: Insulates steam systems, process lines, and gas pipelines, reducing operational thermal loss.
Our products conform to major international safety and environmental guidelines: BS 476, CE, REACH, RoHS, UL94, and ASTM. Every batch is traceable back to raw chemical feedstocks, ensuring complete accountability.
Our insulation materials are installed across high-demand industrial sectors, municipal systems, and deep cryogenic facilities globally.
Applied within commercial cooling infrastructure and district air-conditioning networks. The high moisture barrier index keeps condensation off chillers and piping, eliminating moisture-driven rust.
Meets zero-fiber emission criteria, making it ideal for air conditioning systems within semiconductor fabrication plants, pharmaceutical cleanrooms, and food processing lines.
Protects critical process systems at ultra-low temperatures, such as LNG facilities and ethylene recovery systems. This prevents thermal shock and keeps heat leaks to a minimum.
Operating in compliance with international regulatory bodies. Our production processes are verified by independent, third-party testing agencies.
Founded by Jinwei Group, which holds more than 40 years of manufacturing history since its establishment in 1979, Kingflex continues a tradition of technical excellence. As the pioneer of thermal insulation manufacturing north of the Yangtze River, we maintain rigid control protocols across all aspects of production.
From testing chemical composition to measuring foaming uniformity via automated instrumentation, we work to eliminate structural defects. This gives you peace of mind that our insulation will perform reliably over its entire design life.
We work closely with global buyers, engineering firms, and distributors. Check out some typical order discussions regarding compliance, shipping schedules, and custom dimension capabilities.
A look inside our manufacturing floor, showcasing raw material prep, advanced extrusion equipment, and finished inventory ready for shipping.
Explore our specialized range of insulation products designed for demanding thermal projects.
As sustainability regulations evolve, insulation materials must continue to reduce environmental impact. Our R&D team focuses on developing low-emission, non-toxic alternatives to keep pace with changing standards.
Our key environmental and product safety priorities include:
Get answers to common questions about NBR/PVC closed-cell rubber foam insulation systems.
Exporting high-performance insulation to projects in more than 66 countries. We maintain large stockpiles of standard sizes to support fast turnaround times.
A continuation of our core product line, featuring specialized cryogenic rubber wraps, adhesive insulation sheets, and thermal system components.
