Explore our industrial-grade, closed-cell NBR/PVC and rock wool insulation solutions designed for global infrastructure compliance.
Thermal insulation is no longer merely a passive barrier; it is a critical thermodynamic system that directly influences the operational efficiency of global district cooling, industrial HVAC, and cryogenic gas pipelines. At Kingflex, our closed-cell elastomeric rubber foam insulation is synthesized from a premium blend of Nitrile Butadiene Rubber (NBR) and Polyvinyl Chloride (PVC). This molecular architecture provides a low thermal conductivity matrix ($\lambda \le 0.034$ W/m·K at 0°C) coupled with an extremely high moisture resistance factor ($\mu \ge 10,000$).
By controlling the microcellular structure during the high-pressure vulcanization and expansion process, our engineering team ensures that more than 98% of cells remain fully closed and filled with dry, stable air. This prevents the capillary transmission of water vapor—a fundamental cause of insulation degradation and Corrosion Under Insulation (CUI) in metal piping systems.
A Legacy of Thermal Engineering and Manufacturing Capacity Built Over Decades.
Kingflex Insulation Co., Ltd. is a professional manufacturing and trading combo for thermal insulation products. Kingflex research development and production department is located in the well-known capital of green-building materials in Dacheng, China. It is an energy-saving, environmentally friendly enterprise concentrating on research, development, production, and sales.
In operation, Kingflex takes energy saving and consumption reduction as the core concept. We provide insulation solutions by means of consultation, research and development, production, installation guidance, and post-sale service to lead the development of the global building materials industry.
Our History & Pedigree: Kingflex was established by Jinwei Group, which possesses a rich history of more than 40 years. Jinwei Group was established in 1979 as the first manufacturer of thermal insulation materials north of the Yangtze River. This deep heritage forms the foundation of our engineering expertise and manufacturing stability.
How the Dacheng Industrial Cluster Drives Unmatched Quality, Cost Efficiency, and Supply Chain Resilience.
Being based in Dacheng allows us to source raw NBR, PVC, and fire-retardant chemical additives directly from domestic petrochemical clusters. This eliminates regional transport markups, enabling us to provide highly competitive FOB and CIF quotes to global project managers.
Our 5 automated continuous foaming assembly lines significantly reduce human error and maximize density uniformity. For the procurement engineer, this means every cubic meter of rubber foam delivered maintains consistent thermal resistance, mechanical thickness, and fire performance.
From density variations (40kg/m³ to 55kg/m³) to composite facings (reinforced aluminum foils, self-adhesive backing sheets, UV-resistant coatings), our factory handles specialized customization with structured tooling processes to meet diverse localized building codes.
Comprehensive technical parameters for engineering design, thermal load calculations, and HVAC system modeling.
Our sheet rolls are optimized for large-diameter pipelines, storage tanks, and HVAC rectangular/round duct systems. The flexible nature of elastomeric foam makes installation on complex geometries highly efficient, reducing labor hours and ensuring seamless joint adhesion.
| Parameters | Kingflex Standard Specification |
|---|---|
| Material Composition | Premium NBR/PVC Closed-Cell Elastomer |
| Thickness Range | 6mm - 50mm |
| Apparent Density | 40 - 55 kg/m³ |
| Service Temperature Range | -40℃ to 105℃ |
| Thermal Conductivity ($\lambda$) | ≤ 0.034 W/(m·K) at 0℃ |
| Moisture Resistance Factor ($\mu$) | ≥ 10,000 (Closed-cell rate over 98%) |
| Compression Resilience | Over 80% recovery rate |
Specifically extruded to slide seamlessly over standard copper, steel, and plastic piping systems, our insulation tubes are the primary choice for condensation prevention on chilled water lines and heat conservation on domestic hot water circuits.
| Parameters | Kingflex Pipe Specification Details |
|---|---|
| Material Base | NBR/PVC blend with organic flame retardants |
| Thickness Options | 9mm - 40mm |
| Inner Diameter (ID) | 6mm - 114mm (Covers standard pipe nominal sizes) |
| Density | 40 - 55 kg/m³ |
| Service Temperatures | -40℃ to 105℃ |
| Extrusion Technology | Co-extrusion with uniform inner-wall coating |
| Fire Safety | Class 0 & Class 1 (BS 476 compliant), self-extinguishing |
Kingflex employs a dedicated team of 8 professional engineers in our R&D Department, supported by 230 skilled production professionals. Our facilities are equipped with test chambers to verify material properties under extreme thermal stress. Every production run undergoes rigorous checking for density, dimensional accuracy, thermal conductivity, and fire propagation.
Global Certifications: We build trust through compliance. Our elastomeric rubber foam insulation products hold international approvals, including:
Delivering reliable performance to industrial facilities, chemical complexes, and skyscrapers worldwide.
We 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 industries.
Whether the requirement is for high-density acoustic board, thermal blankets, or ultra-low temperature cryogenic elastomeric wraps for cryogenic pipelines, our engineering consultants guide projects from spec sheet parameters to installation methods on-site.
We maintain strict commercial integrity and open channels with international procurement teams. Below are screenshots of direct communications verifying our quality, speed of service, and traceabilities.
Get answers to common technical queries and procurement specifications for elastomeric rubber foam insulation.
It is mainly used for HVAC ducts, air conditioning pipes, building thermal insulation, industrial pipeline cold insulation, and sound insulation. Its closed-cell nature prevents condensation, making it ideal for systems operating at low temperatures.
Yes, our rubber foam insulation products are fire retardant, meeting global safety standards for building and industrial projects. They comply with BS 476 Class 0 and Class 1 fire propagation limits, ensuring self-extinguishing behavior with minimal smoke toxicity.
Rubber foam is flexible, closed-cell, and moisture-proof, making it suitable for HVAC, chilled water systems, and general building insulation. In contrast, rock wool is high-temperature resistant and fireproof, suitable for high-temperature industrial steam lines.
Yes, we offer comprehensive OEM and ODM services. We support custom sizing, customized structural density, self-adhesive backing, and specialized protective skins like aluminum foil, Aluglass, or UV-resistant polymer coatings.
Our products have passed BS 476, CE, REACH, ROHS, UL94, ASTM, and other international certifications, ensuring compliance with global regulatory standards for green buildings and industrial environments.
Yes. Every production run has a trackable batch code printed directly on the material or packaging. This allows us to trace raw materials, production line conditions, and QA inspection records for complete quality assurance.
Our standard sheet roll thickness ranges from 6mm to 50mm. Custom thicknesses within this range can be calibrated to meet specific design requirements.
When installed correctly, our insulation systems have a service life of approximately 10 to 15 years in typical indoor and protected outdoor environments.
With a closed-cell rate exceeding 98%, our material prevents liquid water and water vapor from reaching the metal pipe surface. This minimizes the risk of oxygenated moisture pooling against steel or copper pipes, reducing Corrosion Under Insulation (CUI).
Standard container orders (FCL) are typically manufactured, packed, and dispatched within 10 to 15 business days from order confirmation, depending on factory capacity and custom specifications.
Select specialized product profiles for high-load industrial installations and regional distribution networks.
Kingflex
