Premium closed-cell elastomeric rubber foam and thermal insulation systems engineered for ultra-low temperature, HVAC, and composite structural core applications.
Analyzing how advanced closed-cell elastomers and composite structures work together to deliver lightweight, highly insulated panel systems.
Glass Reinforced Plastic (GRP), also known as Fiber Reinforced Plastic (FRP), is widely utilized as the outer skin of sandwich panels in modern manufacturing. However, the core material defines the overall thermal efficiency, impact resistance, and weight optimization of the composite. By utilizing Kingflex's highly integrated closed-cell NBR/PVC rubber foam cores, engineers achieve a perfect synergy of high structural integrity and thermal resistance.
Standard sandwich panels require a core that exhibits high shear strength, resistance to water absorption, and low thermal conductivity. Traditional materials like PU or EPS often suffer from cracking or moisture ingress under thermal stress. In contrast, elastomeric rubber foam cores offer exceptional compression resilience (over 80%) and are fully closed-cell (>98%), ensuring stable thermal performance even in harsh, high-moisture environments.
From cryogenic liquid natural gas (LNG) pipe insulation to heavy-duty building facades, the integration of fiberglass skins with robust elastomer foam cores creates an impermeable barrier against energy loss and environmental damage.
Prevents water absorption and vapor migration, retaining thermal insulating properties (K-value) over decades of continuous field use.
With an elastic recovery rating exceeding 80%, these cores absorb structural shifts and mechanical vibrations without delaminating.
Operating from Dacheng, China—the capital of green-building materials—Kingflex delivers large-scale production, rigorous quality control, and global logistics capability.
Kingflex Insulation Co., Ltd. represents a professional manufacturing and trading combo for thermal insulation products. Our advanced production complex concentrates research, development, production, and sales under one energy-saving, environmentally friendly enterprise. Our core operating philosophy centers around energy optimization and consumption reduction.
Our historical lineage traces back to the Jinwei Group, established in 1979, bringing more than 40 years of pioneering thermal insulation research. Jinwei Group was the first manufacturer of thermal insulation materials north of the Yangtze River, paving the way for China's industrial insulation standards.
At present, our manufacturing facilities feature 5 large automatic assembly lines, generating an annual production capacity of more than 600,000 cubic meters. This immense capacity has secured Kingflex's status as a designated enterprise by the Chinese Ministry of Energy, Ministry of Electric Power, and Ministry of Chemical Industry.


Engineered to exact dimensional and performance specifications to fit precise modular building and cryogenic structural configurations.
Ideal for large-area GRP panel backing, HVAC duct systems, and structural partition insulation.
| Parameters | Standard Specification |
|---|---|
| Material Base | NBR/PVC Premium Blend |
| Thickness Range | 6mm - 50mm |
| Core Density | 40 - 55 kg/m³ |
| Service Temp. Range | -40℃ to +105℃ (ULT up to -200℃) |
| Closed-Cell Rate | > 98% |
| Compression Resilience | > 80% |
Specifically extruded for pipeline thermal containment, prevention of condensation, and cryogenic line integration.
| Parameters | Standard Specification |
|---|---|
| Material Base | NBR/PVC Premium Blend |
| Thickness Range | 9mm - 40mm |
| Inner Diameter (ID) | 6mm - 114mm |
| Core Density | 40 - 55 kg/m³ |
| Flame Spread Index | Class 0 / Class 1 (BS 476 Approved) |
| Water Permeability | Excellent Moisture Resistance Factor (μ > 10,000) |
Evenly distributed cell morphology delivers stable long-term K-values and stops thermal bridging.
Engineered self-extinguishing properties that off-gas minimally under intense heat scenarios.
Superior flexibility ensures pipelines do not freeze, crack, or deform under dynamic stress.
Our product systems serve diverse architectural, mechanical, refrigeration, and transportation sectors globally.
Providing thermal barrier insulation for complex air ducts and supply pipe networks to prevent energy loss and condensation pooling.
Integrated into GRP sandwich walls, ceilings, and roofs for commercial and industrial structures requiring sound dampening and thermal regulation.
Shielding high-temperature steam distribution lines, petrochemical storage vessels, and refinery piping against corrosion-under-insulation (CUI).
Serving as core insulation panels in refrigerated truck bodies, storage vaults, and food-processing cleanrooms.
Specialized elastomeric cryogenic layers that maintain flexibility and block heat ingress down to ultra-low temperatures.
Providing lightweight structural panels that satisfy tight weight constraints and flame-smoke-toxicity (FST) railway regulations.
To operate reliably in international engineering domains, Kingflex products adhere to standard requirements defined by leading global authorities. Our materials undergo routine auditing to maintain their verified performance indices.
Our solutions comply with the following testing standards:
This strict adherence guarantees full project safety clearances and long-lasting mechanical properties.




Our dedicated team contains 8 professional engineers in the R&D Department, driving formulation improvements and structural innovations. Working closely with 6 professional international sales coordinators and a production workforce of 230 employees, we ensure quality control from chemical synthesis to loading.



Reviewing our real-world construction projects and transparent procurement interactions with global project managers.
Our core materials protect structural components and transport pipe systems in thermal, cryogenic, and maritime engineering works.




We maintain full communication clarity. Below are actual screenshots demonstrating our active support, custom dimension coordination, and customer feedback across international orders.









Comprehensive engineering clarifications on technical capabilities, fire behavior, composite panel structures, and shipping configurations.
Visualizing our 600,000 m³ capacity facility, raw material warehouses, automated extrusion lines, and shipping centers.












Engineered for high-performing building composite panels, HVAC pipelines, and extreme low-temperature containment.
Explore specialized elastomeric pipe casings, corrosion-resistant tube matrices, and rock wool thermal cores.