Within the fields of process engineering, commercial HVAC design, and district energy, energy conservation is no longer optional—it is a critical operational standard. Proper pipe insulation is the primary barrier preventing thermal gains in chilled water lines, condensation and corrosion under insulation (CUI) in structural steel piping, and thermal losses in steam supply loops.
Global guidelines including ASHRAE 90.1, EN 14304, and ASTM C534 govern the baseline thermal conductivities and moisture vapor permeability thresholds required of insulation materials. Modern structures utilize closed-cell elastomeric nitrile butadiene rubber (NBR) and polyvinyl chloride (PVC) foams to meet strict standards for energy containment and indoor air quality.
By preventing condensation on cold piping surfaces, closed-cell materials eliminate the water ingress pathways that lead to mold growth and mechanical deterioration. In high-temperature processes, rock wool systems serve as robust thermal barriers capable of handling extreme heat, proving essential in heavy manufacturing plants, power generation complexes, and refineries.
Our high-performance NBR/PVC elastomeric rubber foam insulation products are manufactured under rigorous quality control standards to deliver dependable thermal values across demanding temperatures.
| Insulation Material | Standard Thickness | Inside Diameter (ID) / Width | Thermal Conductivity (λ) | Operating Temperature | Fire Rating Standard |
|---|---|---|---|---|---|
| NBR/PVC Elastomeric Foam Tube | 9mm - 40mm | 6mm - 114mm | ≤ 0.034 W/(m·K) at 0°C | -40°C to 105°C | Class 0 / Class 1 (BS 476 Part 6 & 7), UL94 |
| NBR/PVC Elastomeric Foam Sheet | 6mm - 50mm | 1.0m / 1.2m / 1.5m Rolls | ≤ 0.035 W/(m·K) at 0°C | -40°C to 105°C | ASTM E84 25/50, GB 8624 Class B1 |
| Cryogenic Foam Insulation | 13mm - 50mm | Custom Pipe Shells & Sheets | ≤ 0.028 W/(m·K) at -150°C | -200°C to 125°C | ASTM C1126 Type III, BS 476 Part 7 Class 1 |
| Industrial Rock Wool Board | 30mm - 150mm | 600mm x 1200mm Panels | ≤ 0.040 W/(m·K) at 70°C | Up to 650°C | Non-combustible (EN 13501-1 Class A1) |
Minimizes heat loss or gain with high-efficiency cellular microstructures, lowering carbon footprint and utility costs across industrial sites.
Closed-cell structure blocks water vapor transmission, eliminating the need for separate vapor barriers and protecting systems from CUI.
Tested and certified under BS 476, UL94, and ASTM standards. Built to prevent flame propagation and limit smoke generation during fires.
Located in Dacheng, the green building material capital of China, Kingflex Insulation Co., Ltd. represents the peak of modern automated insulation manufacturing. Our automated production line setup allows us to balance high volume with consistent quality.
As a key supplier certified by the Ministry of Energy, Ministry of Electric Power, and Ministry of Chemical Industry, our manufacturing facility operates under automated process controls. Continuous automated mixing and computerized extrusion ensure a uniform foaming cell size distribution exceeding 98% closed-cell structure.
This automated configuration delivers high structural consistency across every meter of pipe or roll of sheet, maintaining steady thermal resistance and physical durability. Integrating raw material processing and logistics on-site helps minimize operational overhead, allowing us to supply large-scale global projects efficiently.
Founded by the Jinwei Group, which traces its manufacturing roots back to 1979, Kingflex has led the way in China's industrial insulation sector. As the first thermal insulation manufacturer established north of the Yangtze River, the Jinwei Group built the foundation for what is now a specialized, research-driven manufacturing operation.
Through decades of refining manufacturing methods and advancing raw material compositions, Kingflex has evolved from a regional supplier into a global manufacturing and trading provider. Today, we work with project engineers to design systems that reduce carbon emissions and operational energy consumption in modern commercial developments.
Our operation integrates consulting, custom R&D, pilot line testing, bulk manufacturing, installation support, and responsive after-sales service, providing dependable support throughout the lifespan of thermal installations.
Our commitment to reliable product performance starts in our research labs. The Kingflex R&D division is staffed by 8 professional insulation engineers who focus on optimizing material formulas, improving fire resistance, and expanding operational temperature limits.
By modifying compound structures, our engineers developed cryogenic formulations that remain flexible down to -200°C without structural cracking. This provides a robust solution for LNG and liquid oxygen process pipelines.
Every production batch is tested for density, flame spread index, smoke density, thermal conductivity, and water vapor transmission rate. Traceability tracking codes printed on every roll and tube allow us to verify quality parameters from raw materials to the delivered project.
Minimizes thermal transfer in large central air conditioning duct systems, chilled/hot water pipes, and condensate piping. Blocks mold development and structural dampness in commercial office towers, shopping malls, and cleanrooms.
Provides critical thermal protection on steam loops, high-temperature storage tanks, and manufacturing process lines. Helps prevent heat loss while maintaining precise system temperatures in chemical and power generation plants.
Maintains structural stability in liquid natural gas and petrochemical lines operating down to -200°C. Protects against thermal shock, blocks condensation, and preserves critical thermal properties in low-temperature applications.
Resists salt spray, atmospheric moisture, and structural vibration on shipboard refrigeration and process lines. Minimizes maintenance and corrosion under insulation (CUI) risks in demanding maritime and offshore environments.
Ensures condensation prevention and dust-free performance in high-density processing facilities. Highly resistant to chemical outgassing, ensuring reliable operation in cleanrooms and semiconductor fabrication plants.
Reduces structural vibration and acoustic noise on interior air handling units, mechanical rooms, and drainage piping. Improves indoor acoustic comfort in hospitals, hotels, and schools.
Our standard sheet roll insulation is engineered for large-diameter pipes, duct systems, and complex mechanical geometries.
Our pre-formed pipe insulation tubes are designed to fit copper, iron, and plastic plumbing lines, helping speed up field installation.
Our insulation materials are installed across commercial office properties, industrial process facilities, cleanroom complexes, and sub-zero cryogenic systems globally.
We work closely with global mechanical contractors, HVAC engineers, and procurement directors to ensure our insulation products align with project specifications and quality requirements.
Our technical team provides detailed submittal reviews, dimensional certificates, custom sample development, and load-out verification photos. This keeps our project partners informed at every stage, from material specification through to final delivery.
It is primarily used for commercial HVAC ductwork, hot and cold water system piping, building envelope insulation, and cold conservation on industrial process piping and drainage networks to control heat transfer, prevent surface condensation, and limit vibration noise.
Yes. Our NBR/PVC elastomeric rubber foam materials are engineered with built-in fire-retardant chemistry. They carry fire safety ratings including Class 0 and Class 1 under British Standard BS 476 (Parts 6 & 7), and comply with ASTM E84 and UL94 testing requirements for flame propagation and smoke density.
Rubber foam is a flexible, closed-cell, moisture-resistant material well-suited for chilled systems, HVAC lines, and moderate-temperature applications. Rock wool is a rigid or semi-rigid fibrous board designed for high-temperature process systems (up to 650°C) and applications requiring non-combustible materials.
Yes. We offer complete OEM services, including custom tube wall thicknesses, specialized inside diameters, self-adhesive backings, pre-applied foil facings, and custom sheet shapes to match target project drawings.
Our products comply with global standards and carry certifications including BS 476, CE, REACH, RoHS, UL94, and ASTM. This ensures compatibility with energy codes in both municipal and industrial markets.
Yes. Every production run has tracking codes printed on the outer packaging and along the inside joints. This allows us to track raw materials, operator logs, and lab results for each batch.
We produce standard thickness ranges starting at 6mm for thin-wall enclosures, up to 50mm heavy sheets designed to handle large-capacity thermal systems without needing multi-layer wraps.
In standard indoor HVAC applications with proper installation, our products deliver an operational lifespan of 10 to 15 years, maintaining stable physical flexibility and thermal resistance over time.
Kingflex