Kingflex
Explore our top-performing thermal and cryogenic insulation solutions engineered to withstand critical industrial systems.
Kingflex Insulation Co., Ltd. is a premier manufacturing and trading combo specializing in high-performance thermal and cold insulation systems. Established by the Jinwei Group (with a legacy spanning over 40 years since 1979 as the pioneer of insulation materials north of the Yangtze River), Kingflex has consistently driven industry standards forward.
Located in Dacheng, China—the recognized national hub of green building materials—our operations combine state-of-the-art research, mass production, and global engineering consultation. We position energy efficiency, safety, and cold-chain protection at the heart of our engineering goals, delivering comprehensive systems from raw material synthesis to worldwide compliance support.
A deep dive into structural performance, material safety, and mechanical optimization under ultra-low temperature (ULT) parameters.
In cryogenic environments (down to -200°C), traditional insulation systems face major challenges due to convective heat transfer and ambient moisture ingress. Kingflex Cryogenic Foam employs an ultra-dense, closed-cell NBR/PVC matrix. The micro-cells trap inert gas elements, reducing convective heat flows while building a continuous vapor barrier that prevents structural ice build-up.
Unlike rigid PUF (Polyurethane Foam) or PIR (Polyisocyanurate) blocks that crack under thermal stress at cryogenic temperatures, our elastomeric compounds maintain elasticity. The design absorbs thermal contraction forces, avoiding micro-fractures in piping networks and eliminating the need for complex contraction joint engineering.
Water vapor acts as a thermal bridge. Once moisture enters an insulation layer, its thermal conductivity (λ) rises rapidly. Kingflex elastomeric systems provide an integrated vapor barrier with a high water vapor resistance factor (μ ≥ 10,000), protecting pipeline surfaces from corrosion under insulation (CUI).
| Property Parameter | NBR/PVC Elastomeric Foam Standard | Cryogenic System Flex Line | Testing Methods Compliance |
|---|---|---|---|
| Thermal Conductivity (λ) | ≤ 0.034 W/(m·K) at 0°C | ≤ 0.021 W/(m·K) at -160°C | ASTM C518 / ISO 8301 |
| Operating Temperature | -40°C to +105°C | -200°C to +125°C (Multi-layer) | ASTM C411 |
| Water Vapor Permeability | ≤ 1.9 × 10⁻¹¹ g/(Pa·m·s) | ≤ 0.8 × 10⁻¹¹ g/(Pa·m·s) | ASTM E96 (Procedure A) |
| Closed-Cell Rate | ≥ 95% | ≥ 98.2% | GB/T 10799 |
| Fire Safety Rating | Class 1 / Class 0 BS 476 | V-0 / HF-1 Self-Extinguishing | BS 476 Part 7 / UL 94 |
| Density Range | 40 - 55 kg/m³ | 55 - 75 kg/m³ | ASTM D1622 |
Our cryogenic foam insulation systems are designed for critical industrial applications across clean energy and aerospace networks. By adjusting polymer blends, we meet strict regional engineering and safety standards.
Protects terminal re-gasification facilities, loading arms, and ship-to-shore transfer pipelines at -162°C, preventing boil-off gas (BOG) losses.
Provides thermal stability for liquid oxygen (LOX at -183°C) and liquid nitrogen (LIN at -196°C) handling networks, keeping boil-off rates close to zero.
Prevents condensation in commercial HVAC chilled water lines, advanced microchip cleanrooms, and medical MRI superconducting systems.
Why global EPC contractors and industrial distributors partner with our factory for large-scale cryogenic projects.
Our facility is situated in Dacheng, China, the center of thermal insulation production. This offers access to high-quality raw materials, stable regional power grids, and skilled technical labor. We pass these cost benefits on to our customers, ensuring competitive pricing on bulk commercial orders.
Equipped with 5 continuous extrusion and foaming lines, we handle large volume demands without compromising structural consistency. Our automated systems monitor density and cell distribution in real time, delivering uniform performance across sheets, rolls, and tube sections.
We provide full documentation support for international shipments, including custom sizing, fire testing certification compliance (BS, ASTM, EN), and quality inspection sheets. Our logistics team handles packing, loading, and marine shipping to major industrial ports worldwide.
We maintain rigorous testing protocols to verify structural performance and safety compliance across all product batches.
Our premium elastomeric NBR/PVC sheets are designed for large surfaces like HVAC ducts, tanks, and industrial containers, providing reliable protection against thermal bridging and condensation.
Offers even cell structures (closed-cell rate >98%), a high moisture resistance factor, and fire safety compliance (self-extinguishing, class 0/1 rating).
Engineered specifically for quick installation on copper, steel, and PVC piping systems, our pre-formed pipes reduce installation time and maintain uniform thickness around connections.
Maintains flexibility under low temperatures, prevents surface condensation, protects piping against outdoor freezing, and helps dampen structural noise.
Key technical insights from our engineering and support departments to help you choose the right insulation system.
It is mainly used to prevent condensation and reduce heat transfer on cold-water piping, HVAC ducts, refrigeration equipment, industrial cryogenic processing lines (such as liquid gas handling), and large-scale architectural ducting.
Yes. Our insulation materials are engineered with flame-retardant additives. They comply with international fire standards, including BS 476 (Class 0 and Class 1), UL94 (V-0 rating), and ASTM E84, ensuring they are self-extinguishing and generate low smoke levels.
Rubber foam has a flexible, closed-cell structure that inherently resists moisture without requiring an additional vapor barrier, making it ideal for cooling and cryogenic systems. Rock wool is a high-density, fibrous open-cell material that offers high-temperature fire resistance, making it suitable for hot industrial pipelines.
Yes. We offer OEM and custom fabrication services. We can supply specialized profiles, pre-cut sheet geometries, and advanced composite facings like reinforced aluminum foil or protective polymer membranes to match your project requirements.
Our products carry certifications for BS 476, CE, REACH, RoHS, UL94, and ASTM. We can provide testing certificates and quality reports for each production run to support project compliance requirements.
Yes. We use a batch-tracking system across our production lines. Raw material components, production settings, and lab test results are logged for every batch to ensure consistent performance.
We produce sheets and rolls in thicknesses from 6mm up to 50mm, and pre-formed tubes in wall thicknesses up to 40mm. Thicker specifications can be achieved by multi-layer configurations.
When installed according to our guidelines and protected from direct weathering, our NBR/PVC closed-cell insulation maintains its thermal properties for 10 to 15 years, even under continuous industrial operating conditions.
Explore our full line of industrial and commercial thermal insulation options.
