Kingflex
Engineered rubber foam sheets, rolls, and pre-formed pipe insulation tubing systems
Copper piping is the backbone of modern thermodynamic systems, including commercial HVAC chillers, domestic hot/cold water supply lines, and industrial chemical processors. However, copper's exceptionally high thermal conductivity (approximately 401 W/m·K) makes it susceptible to rapid heat exchange, heat losses, and immediate condensation when transporting fluids below the ambient dew point.
Applying a high-grade elastomeric rubber foam sleeving halts thermodynamic losses by forming a closed-cell physical barrier. Our material formulation mixes Nitrile Butadiene Rubber (NBR) and Polyvinyl Chloride (PVC) to form a micro-cellular structure. With a closed-cell ratio exceeding 98%, the insulation restricts convective airflow inside the cells, offering an extremely low thermal conductivity (λ ≤ 0.034 W/(m·K) at 0°C).
Additionally, the high resistance factor to water vapor transmission (μ ≥ 10,000) guarantees that moist ambient air cannot penetrate the insulation to reach the cold copper surface, mitigating corrosion under insulation (CUI) and mold growth.
Key technical benchmarks that separate industrial-grade elastomeric insulation from consumer-grade alternatives
Our micro-cell structures encapsulate air, halting convective thermal pathways. This stable density keeps thermal conductivity consistent even under mechanical compression and variable relative humidity.
Boasting a water vapor resistance coefficient (μ) of over 10,000, our insulation eliminates the need for external vapor wraps, preventing atmospheric moisture ingress in tropical environments.
Formulated with advanced fire retardants, Kingflex products comply with BS 476 Part 6 & 7 regulations. They are self-extinguishing and will not generate flaming droplets during a fire hazard.
Kingflex Insulation Co., Ltd. is a professional manufacturing and trading combo for thermal insulation products. Our research, development, and production departments are located in Dacheng, China—the well-known capital of green building materials. As an energy-saving and environmentally friendly enterprise, we concentrate on the research, development, production, and sale of advanced elastomeric insulation systems.
We take energy conservation and consumption reduction as our core concepts. We provide comprehensive solutions regarding insulation via consulting, R&D, production, installation guidance, and post-sale services to lead the global building materials industry.
Established by the Jinwei Group, which boasts more than 40 years of history, Kingflex traces its lineage back to 1979. Kingway Group was the pioneer manufacturer of thermal insulation materials north of the Yangtze River.
Direct supply from our manufacturing facility in Dacheng, China
Our black rubber foam insulation rolls are engineered for large-diameter copper tubes, flat ductwork, and specialized equipment fittings. They offer excellent elasticity, structural flexibility, and high resistance to physical wear.
Applications: Central air conditioning ducts/pipes, wall/roof insulation, sound absorption panels in mechanical rooms, cryogenic equipment systems, and anti-vibration damping pads.
Designed for rapid slip-on or slit-and-seal installation over copper pipe runs. Our pipe insulation sleeves prevent surface condensation on cold water lines and preserve thermal energy in hot water distribution systems.
Applications: Chilled/hot water HVAC systems, building water pipelines, steam supply networks, chemical processing units, and solar thermal collector loops.
Why procurement teams trust Kingflex for large-scale construction and industrial projects
Our facility runs five high-capacity automatic assembly lines. These continuous extrusion lines produce over 600,000 cubic meters annually under strict quality control, ensuring consistent cell size and density.
Supported by 8 dedicated in-house engineers, Kingflex develops custom formulations for high-stress environments. Our R&D center optimizes parameters like flame retardancy and cryogenic flexibility.
Located in the Dacheng green industrial zone, our plant has direct highway access to Tianjin Port and Beijing Airport. This proximity ensures secure logistics and prompt container packing for overseas clients.
Industrial projects require different mechanical and chemical certifications depending on the region. As an international supplier, Kingflex ensures that all shipments comply with local building regulations and green building standards.
Our technical team supports contractors from the design phase onward. We provide heat loss calculations, thickness recommendations for various dew points, and on-site installation guidance. Whether you are dealing with ASHRAE standards in North America, BS codes in the UK, or DIN regulations in Europe, our solutions are built to comply.
Every batch is tested to guarantee design compliance and chemical stability
We regularly test K-value curves across temperature ranges from -40°C to 105°C to ensure optimal thermodynamic performance.
Our vertical and horizontal burn tests conform to BS 476 and UL94 standards to guarantee fire-safety compliance.
We monitor cell structure uniformity under microscopic magnification to ensure moisture resistance.
Direct chat logs showcasing project execution, customer satisfaction, and repeat supply contracts
Our solutions installed in commercial HVAC systems and industrial complexes worldwide
Technical guidance regarding elastomeric rubber foam insulation application and standards
Original views of our raw material warehousing, automated packing lines, and loaded shipping containers
Premium solutions for specialized low-temperature and high-temperature thermal barriers
