Kingflex
Engineered rubber elastomeric solutions and specialty insulation systems designed for maximum energy efficiency and condensation control.
Within high-performance commercial HVAC systems, duct insulation acts as the primary barrier against uncontrolled heat exchange and critical condensation buildup. Selecting the correct insulation medium requires analyzing thermal conductivity (known as the λ-value), moisture vapor transmission resistance (μ-value), and long-term structural integrity under cycling temperatures.
Kingflex NBR/PVC elastomeric foam is designed with an extremely dense closed-cell matrix (exceeding 98% closed cells). Unlike fibrous alternatives like fiberglass or open-cell foams, our closed-cell design resists moisture absorption. Water has a thermal conductivity approximately 24 times higher than air; any moisture intrusion into an insulation layer degrades its thermal performance. By creating an impermeable cellular barrier, Kingflex prevents humidity ingress, assuring consistent performance for the life of the system.
Established as a strategic expansion of the Jinwei Group, which has a manufacturing history dating back to 1979, Kingflex Insulation Co., Ltd. builds on over 40 years of industrial expertise. Jinwei Group was a pioneer in North-of-the-Yangtze thermal insulation manufacturing, establishing structural benchmarks for the Chinese building material industry.
Today, Kingflex operates as a fully integrated research, manufacturing, and trading enterprise. Our corporate headquarters and production facilities are based in Dacheng, China—known as the capital of green building materials. Focused on energy efficiency and consumption reduction, our team supports clients throughout the project lifecycle, offering initial consultation, customized R&D, mass production, and field installation guidance.
Cubic Meters Annual Capacity
Years Industrial Heritage
Global Export Destination Countries
Skilled Production Specialists
Engineered technical values verified under international testing configurations, including BS 476, ASTM, and DIN standards.
| Property / Characteristic | Kingflex Standard Sheet Rolls | Kingflex Elastomeric Pipes & Tubing |
|---|---|---|
| Base Material Matrix | NBR/PVC Elastomeric Foam Compound | NBR/PVC Elastomeric Foam Compound |
| Thickness Availability | 6mm to 50mm | 9mm to 40mm |
| Inner Diameter (ID) Range | N/A (Flat Sheet / Roll Format) | 6mm to 114mm |
| Density Range | 40 - 55 kg/m³ | 40 - 55 kg/m³ |
| Service Temperature Limit | -40℃ to 105℃ (Specialty Cryogenic variants down to -200℃) | -40℃ to 105℃ |
| Thermal Conductivity (λ) | ≤ 0.035 W/(m·K) at 0℃ | ≤ 0.035 W/(m·K) at 0℃ |
| Moisture Resistance (μ) | ≥ 10,000 (Fully closed-cell structured) | ≥ 10,000 (Fully closed-cell structured) |
| Compression Resilience | ≥ 80% recovery rate under compression loads | ≥ 80% recovery rate under compression loads |
| Fire Safety Compliance | Flame retardant, self-extinguishing (Class 0 / Class 1 to BS 476) | Flame retardant, self-extinguishing (Class 0 / Class 1 to BS 476) |
From deep cryogenics to high-humidity commercial structures, Kingflex provides targeted insulation solutions.
Condensation control on central air conditioning ducts in hotels, airports, and modern offices. Eliminates sweating on cold duct surfaces and prevents microbial growth in ambient plenums.
Specially engineered low-temperature systems protect liquefied gas pipelines (LNG, nitrogen) from thermal shock and heavy icing, remaining flexible under extreme conditions.
Corrosion-resistant formulation helps isolate process piping in chemical plants from atmospheric contaminants, limiting Corrosion Under Insulation (CUI).
At our facility in Dacheng, China, quality control is integrated throughout the extrusion and foaming processes. Operating 5 high-speed automatic assembly lines, our manufacturing process balances vulcanization speed, blowing agent activation, and temperature profiles to maintain uniform cell structure across all production runs.
Our R&D center is staffed by 8 engineers specializing in polymer physics. The team focuses on improving fire safety performance (such as smoke density reduction and flame spread resistance) while maintaining flexibility. We continuously test our materials against ASTM and BS standards to ensure compliance with global fire safety codes.
How our base in the Dacheng green industrial zone supports international infrastructure projects.
Located in the Dacheng green building materials cluster, Kingflex maintains direct access to primary polymer manufacturers and chemical suppliers, insulating operations from raw material volatility.
Continuous automation minimizes variation in material density and cell structure while reducing energy usage during manufacturing, providing cost stability for global projects.
Our logistical hubs in northern China enable smooth container loading and transport to international ports, supporting major construction schedules worldwide.
A timeline of our ongoing developments in chemical design, process engineering, and eco-friendly manufacturing.
Kingflex materials are tested and certified by international laboratories, verifying performance for global markets.
Our materials are utilized in high-profile commercial and industrial installations around the world.
Transparency and reliability in our customer support, technical consultation, and global logistics planning.
Explore our full line of elastomeric closed-cell and high-temperature thermal insulation options.
Detailed engineering and procurement answers regarding elastomeric rubber insulation systems.
It is mainly used for HVAC ducts, air conditioning pipes, building thermal insulation, industrial pipeline cold insulation, and sound insulation. Its closed-cell structure prevents moisture condensation on cold surfaces and reduces thermal transfer in dynamic temperature systems.
Yes, our rubber foam insulation products are flame retardant. They are designed to meet international safety standards, including BS 476 (Class 0 and Class 1), UL94, and ASTM E84, helping prevent flame spread and control smoke development in commercial installations.
Rubber foam is a flexible, closed-cell, moisture-resistant material, making it suitable for HVAC systems, cold water lines, and preventing condensation. Rock wool is a high-density fibrous mineral material that handles high operating temperatures, providing fireproofing and acoustic dampening for industrial steam lines.
Yes. We offer customized product sizing, thickness configurations, and specialty laminations (such as aluminum foil or self-adhesive backings) to meet project specifications and mechanical design requirements.
Our products are tested to meet international performance standards, with certifications including BS 476, CE, REACH, RoHS, UL94, and ASTM. This documentation supports local engineering submittals and building code approvals.
Yes. Every production run is tracked with batch numbers printed directly on the material packaging or inner tube cores, ensuring quality traceability from raw materials to the job site.
We manufacture rubber foam sheet rolls in thicknesses ranging from 6mm to 50mm, allowing engineering teams to specify the exact thickness required to meet condensation control calculations.
When installed according to specifications and protected from UV exposure, our NBR/PVC elastomeric materials have an expected service life of 10 to 15 years in typical indoor and semi-protected commercial applications.
