Kingflex
High-durability engineered closed-cell insulation designed to combat thermal loss and moisture migration.
Exploring the micro-structure and physical attributes that make elastomeric foam (NBR/PVC) the premier choice for modern thermal conservation and condensation prevention.
Closed Cell Nitrile Rubber, molecularly structured from a synthesis of Nitrile Butadiene Rubber (NBR) and Polyvinyl Chloride (PVC), is an elastomeric material featuring a high-density matrix of independent, sealed cells. This micro-structural configuration ensures that gas molecules are locked within the cells, preventing the movement of heat while keeping liquids out.
Designed to operate effectively in temperatures ranging from -40℃ to 105℃ (and reaching down to cryogenic levels in specialized formulations), these materials exhibit an incredibly low thermal conductivity (k-value ≤ 0.034 W/m·K at 0°C) and a high moisture resistance factor (μ ≥ 10,000).
This thermodynamic resistance prevents condensation on cold systems, protecting metal pipes from Corrosion Under Insulation (CUI).
How regional consolidation, raw material access, and advanced industrial automation enable high-performance insulation at global scale.
Our manufacturing and research facilities are located in Dacheng, China—historically recognized as the capital of green-building materials. This strategic localization brings immediate access to raw petrochemical resources and specialized polymer compounders, drastically reducing raw material lead times and transportation costs.
By blending localized supply chains with optimized production processes, Kingflex guarantees rapid processing of large custom orders without compromising chemical formulation accuracy.
Operating 5 large automatic assembly lines, Kingflex outputs over 600,000 cubic meters annually. Real-time computerized monitoring ensures consistent foaming ratios, uniform cell size dispersion, and strict thickness tolerances (matching ASTM and EN guidelines). This level of automation ensures every batch of rubber sheet and tube maintains uniform thermal and physical performance.
Adapting to modern sustainability mandates, high-density urbanization, and specialized industrial requirements.
Modern building codes require comprehensive noise-mitigation steps. High-density elastomeric rubber foams act as structural dampers, absorbing sound waves in ventilation systems, internal pipe networks, and mechanical equipment rooms. This helps prevent structural sound transmission in hotels, hospitals, and high-rise apartments.
Handling liquefied gases (LNG, nitrogen, oxygen) requires highly specialized thermal insulation systems. Kingflex’s cryogenic elastomeric materials and Alkadiene rubber foam systems operate efficiently at sub-zero ranges down to -200°C. They prevent thermal shock, control condensation, and protect pipes in cryogenic environments.
Global markets are moving away from halogens due to toxic gas risks during fires. Our premium halogen-free thermal insulation lines comply with strict green building standards (LEED, BREEAM). They provide reliable fire protection without releasing corrosive acid gases or heavy smoke.
A detailed breakdown of Kingflex product configurations, materials, and dimensional specifications.
Manufactured as continuous, high-tensile rolls, Kingflex elastomeric sheets are designed for large surfaces like rectangular air ducts, large-diameter process pipes, storage tanks, and structural walls.
| Parameters | Specifications |
|---|---|
| Material Composition | Premium NBR/PVC Blend |
| Thickness Range | 6mm to 50mm |
| Density Range | 40 to 55 kg/m³ |
| Service Temperature | -40℃ to 105℃ |
| Cell Structure | ≥98% Closed Cell |
Primary Applications: HVAC air ducts, building wall/roof insulation, district energy tanks, rail transit thermal barriers, and industrial plant process lines.
Pre-molded into cylindrical tubes with precise interior diameters (ID), these sections slip easily over copper, steel, and plastic pipes. They are designed to prevent condensation on chilled-water lines and reduce heat loss on hot water systems.
| Parameters | Specifications |
|---|---|
| Material Composition | Premium NBR/PVC Blend |
| Thickness Range | 9mm to 40mm |
| Inner Diameter (ID) | 6mm to 114mm |
| Thermal Conductivity | ≤ 0.034 W/(m·K) (at 0°C) |
| Fire Performance | Self-extinguishing, Class 0/Class 1 |
Primary Applications: Chilled water pipes, split A/C lines, sanitary hot-water plumbing, solar heating pipes, and sub-zero process refrigeration loops.
Kingflex materials are continuously tested in our dedicated labs to ensure they maintain their physical properties over long-term use. The combination of closed-cell structure and compression resilience (≥80%) prevents sag, resists deformation from mechanical pressure, and maintains its insulation value throughout its lifetime.
With an active lifespan of 10 to 15 years, our elastomeric products significantly lower long-term operating and maintenance costs for commercial facilities and industrial plants.
A legacy built on green insulation technology, state-recognized standards, and global exports.
Kingflex was established by the Jinwei Group, which boasts a rich history of over 40 years. Founded in 1979, the group was the first major thermal insulation manufacturer north of the Yangtze River, paving the way for China's modern insulation industry.
Our team is built on engineering expertise. Kingflex employs 8 professional engineers in our R&D Department, 6 dedicated international sales managers, and 230 skilled production professionals. This structure keeps us at the forefront of insulation science and international logistics.
We are a designated production enterprise certified by the Ministry of Energy, the Ministry of Electric Power, and the Ministry of Chemical Industry in China. This ensures our quality control meets the strict standards required for major national and industrial infrastructure projects.
Engineered to meet the safety and environmental standards of international markets.
To support global distribution and ensure compliance with building regulations, Kingflex products undergo regular testing by third-party certification bodies. Our materials meet strict fire safety, toxicity, and environmental standards.
With 16+ years of export experience across 66+ countries, we build reliable, long-term partnerships.
Transparency builds trust. We work closely with procurement managers, engineering firms, and distributors to ensure clear technical communication and accurate custom manufacturing.
We manage global logistics efficiently to ensure prompt, secure deliveries worldwide.
Key factors to evaluate when sourcing closed-cell elastomeric insulation for large-scale projects.
For long-term performance, choose a density of 40-55 kg/m³. This range balances air-trapping capability with mechanical strength. Lower densities can compress too easily, reducing insulation values, while higher densities may increase thermal conductivity.
Ensure the material holds verified test certificates such as BS 476 (Part 6 & 7 Class 0), UL94, or ASTM E84. These certifications confirm that the material is self-extinguishing and will not spread fire through wall cavities or air ducts.
Condensation control on chilled water pipes depends directly on the water vapor transmission rate. A high moisture resistance factor (μ ≥ 10,000) prevents humidity from reaching cold metal pipes, protecting the system from CUI.
For complex piping systems, ask if pre-cut sheets, customized inner diameters, or pre-applied self-adhesive backings are available. Using tailored components saves time and reduces errors during installation.
Answers to common technical, logistics, and quality questions from engineering and procurement teams.
Specialized cryogenic, halogen-free, and high-performance insulation lines for international projects.
