Kingflex
Kingflex
Examine our highly rated thermal insulation products designed to prevent condensation, minimize thermal bridging, and maintain extreme operational temperatures.
Within large-scale HVAC designs, chilled water pipes function as the primary arterial network transporting heat away from occupied zones. Operating between 4°C and 7°C (40°F to 45°F), these lines run far below the ambient dew points of most global environments. Left unprotected, condensation occurs instantly. This results in structural corrosion, degraded indoor air quality from mold, and catastrophic thermal loss.
Global trends are pushing designers toward strict compliance under ASHRAE 90.1 and BREEAM/LEED certifications. Thermal design parameters no longer prioritize basic insulation; they demand long-term structural integrity and high moisture resistance. Closed-cell, flexible elastomeric thermal insulation materials, engineered from high-grade Nitrile Butadiene Rubber (NBR) and Polyvinyl Chloride (PVC), remain the leading choice to satisfy these commercial demands.
Our global manufacturing capacity, decades of industry experience, and commitment to environmental standards.
Selecting the correct nominal size and wall thickness is critical to prevent condensation and maintain HVAC system balance.
Condensation occurs when the outer surface temperature of the pipe insulation drops below the ambient dew point. In high relative humidity environments (e.g., coastal zones or tropical climates), engineers must specify thicker insulation walls. High-performance NBR materials, with their thermal conductivity value of ≤ 0.035 W/(m·K) at 0°C, offer the structural barrier required to maintain a warm outer surface temperature.
Our products undergo rigorous testing to comply with international standards including BS 476 Parts 6 & 7 (Class 0 & Class 1), ASTM C534 (for preformed elastomeric cellular thermal insulation), and UL 94 flame spread ratings. These certifications guarantee that the material will retard flame propagation, generate minimal smoke, and ensure structural safety in industrial HVAC shafts.
Proper fitment is critical. Pre-formed elastomeric insulation tubes must match the inner diameter (ID) of the steel, copper, or PVC pipeline. Standard IDs for Kingflex insulation tubes range from 6mm to 114mm, with wall thicknesses available from 9mm to 40mm. Sheet roll insulation handles outer dimensions above 114mm.
| Insulation Product Category | Material Composition | Standard Thickness (mm) | Inner Diameter (ID) Range | Thermal Conductivity (λ) | Service Temp. Range |
|---|---|---|---|---|---|
| Black Rubber Foam Insulation Tube | NBR / PVC Base | 9mm - 40mm | 6mm - 114mm | ≤ 0.035 W/(m·K) at 0°C | -40°C to +105°C |
| Kingflex Sheet Roll / Board | Elastomeric Foam | 6mm - 50mm | Flat Roll / Board | ≤ 0.035 W/(m·K) at 0°C | -40°C to +105°C |
| Aluminum Foil Covered Board | NBR/PVC + Alu Jacket | 6mm - 50mm | Flat Roll / Sheet | ≤ 0.034 W/(m·K) at 0°C | -40°C to +105°C |
| Cryogenic Insulation Systems | Specialized Diolefin | Custom Layered | Tubes / Sheets | ≤ 0.031 W/(m·K) at -150°C | -200°C to +125°C |
Kingflex Insulation Co., Ltd. is located in Dacheng, China—the capital of green building materials. Operating inside a designated green manufacturing cluster, we prioritize environmental compatibility and energy savings across all operations.
Equipped with 5 large automatic assembly lines, our facilities run a fully automated batching system, continuous extrusion vulcanization, and real-time electronic monitoring. This setup eliminates human error and guarantees a density variation limit of ±3 kg/m³. As a designated manufacturing partner for the Ministry of Energy and the Ministry of Chemical Industry, our production output of over 600,000 cubic meters annually ensures global supply chain stability for large projects.
Our products meet the regulatory requirements and environmental needs of diverse international projects.
In humid tropical regions (e.g., Southeast Asia, Middle East), HVAC condensate drains and cold supply pipelines run through occupied ceiling voids. Moisture accumulation can cause ceiling damage and indoor air issues. Our pre-formed Black Rubber Foam Insulation Tube prevents dripping, while its elastomeric structure dampens mechanical pipe noise.
Chemical processing requires strict temperature control and reliable pipe protection. Harsh chemicals can cause Corrosion Under Insulation (CUI). Kingflex NBR/PVC blends resist oil, acid, and alkali exposure, and protect pipelines from mechanical damage and environmental wear.
For operations in LNG processing or petrochemical plants running down to -200°C, typical insulation will crack and fail. Our specialized Diolefin Flexible Rubber Foam Insulation retains its flexibility and thermal barrier properties under extreme thermal stress.
Explore our testing laboratories, team structure, and international quality certifications.
Kingflex maintains a dedicated research and development team, led by 8 professional insulation engineers. They continuously work to improve flame retardancy, thermal efficiency, and cryogenic performance.
Our manufacturing and quality systems are certified under major international standards, including BS 476, CE, REACH, RoHS, UL94, and ASTM. This ensures compliance with global construction and environmental regulations.
With a staff of 230 manufacturing workers, 8 R&D engineers, and 6 international trade representatives, Kingflex provides end-to-end support from specification through post-sale shipment tracking.
Review our product design standards for sheets, rolls, and pipes.
Designed for large-diameter pipes, ductwork, and flat equipment surfaces. NBR/PVC blending provides excellent flexibility for cutting and fitting complex geometries, reducing installation time.
| Material Composition | NBR/PVC Elastomeric Foam |
| Thickness Range | 6mm to 50mm |
| Density | 40 - 55 kg/m³ |
| Operational Range | -40℃ to 105℃ |
Key Advantages: Fully closed-cell structure (>98% closed cells) preserves long-term thermal conductivity and resists ambient humidity. The material has high elasticity to absorb mechanical vibration and meets self-extinguishing fire ratings.
Pre-extruded insulation sleeves designed for standard copper and steel pipelines. Accurate inner diameters (ID) prevent air gaps between the pipe wall and the insulation, reducing condensation risk.
| Material Composition | NBR/PVC Elastomeric Foam |
| Thickness Range | 9mm to 40mm |
| Inner Diameter (ID) | 6mm to 114mm |
| Density | 40 - 55 kg/m³ |
| Operational Range | -40℃ to 105℃ |
Key Advantages: High flexibility speeds up installation on bends. Inner diameter spraying facilitates slide-on installation, and the material prevents freeze-thaw cracking of condensation lines.
Our products are used in district cooling plants, commercial developments, and petrochemical operations globally.
Real-time feedback and direct procurement dialogue with international contractors and distributors.
Explore our solutions, including elastomeric tubes, acoustic control boards, and industrial rock wool systems.
Standard closed-cell NBR/PVC insulation tube for high efficiency chilled lines.
Coated to resist corrosive chemical vapors in industrial environments.
High flexibility facilitates installation around structural offsets and tight bends.
Pre-cut NBR piping sleeve designed for commercial refrigeration lines.
Dual-phase foamed tube designed to provide low thermal conductivity.
Designed for high relative humidity environments in central air networks.
Integrated pipeline insulation system for commercial developments.
Maintains flexibility and prevents thermal shock at temperatures down to -200°C.
Resists contraction stress in cold-chain and storage systems.
Engineered barrier designed for extreme petrochemical cooling tasks.
High-density stone wool board designed for high-temperature and firewalls.
Flexible mineral fiber wraps designed for furnace and boiler exhausts.
Technical answers to common questions about elastomeric foam insulation systems.
A1: It is primarily used for HVAC duct systems, air conditioning piping networks, building thermal insulation, commercial chilled water lines, industrial pipeline cold conservation, and acoustic noise isolation. Its closed-cell structure prevents condensation on cold pipelines operating down to 0°C.
A2: Yes. Kingflex rubber foam insulation includes flame-retardant additives. It complies with major international fire safety standards, including BS 476 Part 6 & 7 (Class 0 & Class 1), UL 94, and German DIN 4102 (B1 Class), making it suitable for commercial and high-occupancy buildings.
A3: Rubber foam is a flexible, closed-cell material with high moisture resistance, making it suitable for cold pipelines (HVAC, chilled water) where condensation is a concern. Rock wool is a fibrous material with high temperature resistance, making it suitable for fire barriers and high-temperature industrial pipelines (steam lines).
A4: Yes. We offer OEM and custom services. We can adjust density, sheet thicknesses (6mm to 50mm), pipe inner diameters (6mm to 114mm), and supply specialized laminations like aluminum foil jackets or self-adhesive backings.
A5: Our products are certified under BS 476, CE, REACH, RoHS, UL94, and ASTM. These certifications ensure compliance with quality and safety regulations in Europe, the Americas, the Middle East, and Asia-Pacific.
A6: Yes. Every production batch is coded at our factory. From raw NBR material compounding through automated extrusion, vulcanization, and packaging, our quality control logs allow tracking of every shipment.
A7: We produce rubber foam insulation sheets and rolls in thicknesses from 6mm to 50mm, allowing designers to select the appropriate thickness for local ambient humidity and temperature requirements.
A8: When properly installed and maintained under standard operating conditions, our rubber foam insulation has a service life of 10 to 15 years. Outdoor installations require UV-resistant coatings or protective metal jacketing to prevent aging from exposure.
Our 5 automated assembly lines produce over 600,000 m³ of insulation annually, supporting major construction projects worldwide.
Our specialized product range designed for sound attenuation, low-temperature systems, and heavy-duty pipe protection.
