Kingflex
Thermal insulation in modern building and industrial engineering is no longer simply about blocking temperature transfer. It represents a complex matrix of energy conservation, moisture prevention, sound dampening, and fire compliance. As a premier rubber foam insulation accessories manufacturer, Kingflex Insulation has spent decades refining the chemical composition and manufacturing technologies of elastomeric polymers.
Elastomeric NBR/PVC closed-cell rubber foam is engineered with an microcellular structure. Each cell contains pockets of trapped air which drastically limits thermal transfer. With a thermal conductivity value (λ) down to 0.034 W/(m·K) at 0°C, our insulation represents the peak of thermal efficiency. Furthermore, the high water vapor diffusion resistance factor (μ ≥ 10,000) acts as a built-in vapor barrier, meaning no external coating is needed to prevent condensation and pipe corrosion under insulation (CUI).
Kingflex Insulation Co., Ltd. is a globally integrated manufacturing and trading combo, specialized in green and environment-friendly thermal insulation materials. Located in Dacheng, China—historically recognized as the capital of green building materials—our production and research department operates with a dedication to energy-saving and carbon footprint reduction.
Founded as part of the prestigious Jinwei Group, which boasts over 40 years of history since its establishment in 1979, Kingflex inherits generations of expertise. Jinwei Group was the first manufacturer of thermal insulation materials north of the Yangtze River. Today, Kingflex carries this legacy forward into the global market, providing integrated solutions across development, installation guidance, and post-sale engineering services.
Learn More About Jinwei GroupSupported by 8 professional insulation research engineers, Kingflex develops custom formulations tailored for extreme industrial conditions, including high-temperature steam lines and sub-zero cryogenic systems.
Our infrastructure features 5 high-speed automatic continuous foaming production lines, capable of outputting over 600,000 cubic meters annually, securing our position as a designated manufacturer for major national energy departments.
Our workforce features 230 skilled production professionals and 6 international trade specialists, enabling us to export products seamlessly to 66 countries across North America, Europe, and the Middle East.
Choosing the correct elastomer thickness and density is critical to preventing condensation and ensuring long-term thermal resistance. Our core NBR/PVC formulation is designed to resist standard physical and mechanical loads, with a compression resilience rating above 80%, providing long-term structural recovery. Below is our standard dimension and physical parameters overview:
| Property / Parameter | Kingflex Standard Sheet Rolls | Kingflex Standard Pipes & Tubes |
|---|---|---|
| Base Material Matrix | Elastomeric Nitrile Rubber / Polyvinyl Chloride (NBR/PVC) blend | Elastomeric NBR/PVC blend (extruded) |
| Available Thickness Range | 6mm, 9mm, 13mm, 19mm, 25mm, 32mm, 40mm, 50mm | 9mm, 13mm, 19mm, 25mm, 32mm, 40mm |
| Inside Diameter (ID) | Not Applicable (Continuous Rolls or Sheets) | 6mm up to 114mm (Inner Diameter fits standard piping) |
| Foam Density Range | 40 - 55 kg/m³ (micro-cellular structure) | 40 - 55 kg/m³ |
| Service Temperature Limit | -40°C to +105°C (Standard industrial range) | -40°C to +105°C (Cryogenic variants up to -200°C available) |
| Thermal Conductivity (λ) | ≤ 0.034 W/(m·K) at 0°C | ≤ 0.034 W/(m·K) at 0°C |
| Fire Classification | BS 476 Part 7 Class 1, UL94 V-0, ASTM E84 compliant | BS 476 Part 6 & 7 Class 0/1, Self-extinguishing |
Kingflex rubber foam insulation accessories and pipe systems are engineered for diverse, demanding environments:
By operating inside the Dacheng green-building industrial cluster, Kingflex leverages an optimized supply chain. We maintain direct connections to primary synthetic rubber manufacturers and chemical raw material suppliers. This close integration allows us to keep raw material costs low, execute custom thickness requests quickly, and ramp up production to meet high demands.
Our facility is situated near major Northern China transport corridors, facilitating fast freight access to the Port of Tianjin (Xingang). This strategic location ensures rapid global distribution, allowing us to load, secure, and clear bulk shipments efficiently for international projects.
Furthermore, our 5 automated production lines operate under strict environmental and structural guidelines, keeping lead times consistent even during seasonal demand spikes.
To operate reliably in international building projects, materials must comply with local fire, chemical, and building safety regulations. Kingflex products undergo rigorous testing and carry certifications from global regulatory bodies:
Ensures minimal flame spread and low heat release rates under British Standard test criteria.
Confirms self-extinguishing behavior with zero flaming droplets during vertical flame exposure.
Guarantees that our NBR/PVC polymers are free of heavy metals, polybrominated biphenyls, and harmful phthalates.
Adheres to specifications for flexible cellular materials, certifying thermal stability and moisture performance.
Each batch from Kingflex is assigned a production code, ensuring full traceability from the raw material inspection stages to final extrusion and curing.
We prioritize open communication and transparent business relationships. Below are verified records of client correspondences, showcasing our response speed, custom technical assistance, and global project coordination:
At Kingflex, we remain focused on the future of thermal dynamics and ecological sustainability. Our current development strategy is built on three key engineering goals:
