Kingflex Insulation Co., Ltd. stands as a preeminent global enterprise specializing in the research, development, and manufacturing of advanced elastomeric thermal insulation systems. Our industrial footprints are strategically located in Dacheng, China—historically recognized as the hub of green building materials. Kingflex operates with a core mission: driving industrial energy saving and environmental compatibility through scientific precision.
As part of the renowned Jinwei Group, which has accumulated over 40 years of market presence since its foundation in 1979, we inherit the technical prowess of the first thermal insulation manufacturer north of the Yangtze River. Today, we supply custom-engineered cold and heat preservation systems to over 66 countries, ensuring operational stability in demanding thermal and acoustic environments.
Understanding the physics of closed-cell elastomeric rubber foam insulation and its application across high-stress environments.
Our formulation reaches an even foaming density with a closed-cell ratio exceeding 98%. This physical structural density blocks moisture ingress, ensuring stable, long-term thermal conductivity (k-value) and preventing Corrosion Under Insulation (CUI).
Formulated with advanced fire-retardant elements, our elastomeric compounds self-extinguish immediately upon removal of fire sources. Products comply with rigorous international standards, including BS 476 Part 6 & 7, Class 0/1, and UL94-V0.
From deep cryogenic lines at -40°C (and specialized formulations for lower temperatures) to hot HVAC ducts at 105°C, our elastic structures retain flexibility, showing compression resilience of over 80% without cracking.
| Performance Metrics | NBR/PVC Elastomeric Rubber Foam | Acoustic & Special Sheets | Test Methods & Standards |
|---|---|---|---|
| Thermal Conductivity (0°C) | ≤ 0.034 W/(m·k) | ≤ 0.036 W/(m·k) | ASTM C518 / ISO 8301 |
| Moisture Resistance (μ) | ≥ 10,000 | ≥ 7,000 | BS EN 12086 |
| Density Range | 40 - 55 kg/m³ | 50 - 75 kg/m³ | ASTM D1622 |
| Service Temperature Limit | -40℃ to +105℃ | -200℃ to +125℃ (Cryo grade) | ASTM C534 |
| Fire Classification | Class 0 / Class 1 / V-0 | Flame Retardant Class B1/B2 | BS 476 Part 6 & 7 / UL 94 |
| Compression Resilience | ≥ 80% | ≥ 75% | GB/T 6669 |
Procuring raw materials and components for heavy-duty industrial projects requires more than just low-cost labor. Kingflex leverages integrated chemical feedstocks, highly efficient regional logistics networks, and automated manufacturing systems in Hebei Province to produce high-specification insulation sheets and tubes at scale.
From complex industrial plants to commercial systems, our custom configurations meet strict engineering standards.
Condensation on chilled water pipes and air ducts causes structural degradation and mold growth. Our NBR/PVC closed-cell sheets insulate ventilation ducts, reducing thermal transfer and operational energy demands in humid climates.
In chemical complexes and manufacturing plants, high-pressure steam and process lines operate under intense conditions. Our flexible tube insulation prevents heat loss, protects workers, and resists oil and chemical exposure.
Liquefied gas transportation and cryogenic piping require insulation systems that prevent thermal bridging. Kingflex multi-layered cryogenic foams remain flexible at sub-zero temperatures, resisting ice formation and pipeline stresses.
At Kingflex, quality assurance is built into every step of our process. Our dedicated engineering division comprises 8 R&D specialists who refine polymer formulations for UV resistance, mechanical strength, and fire safety. Assisted by a professional sales and logistics team, we make sure that all shipments meet regional import codes and technical compliance parameters.
Our materials undergo regular compliance audits and hold key international certifications:
Direct communication records and project updates demonstrate our dedication to collaborative partnerships.
We work closely with structural consultants, mechanical engineers, and procurement professionals. By maintaining direct communication, we quickly resolve issues regarding density specifications, dimensional tolerances, and customs clearance paperwork.
This hands-on coordination keeps industrial projects on schedule, whether insulating a district cooling station in the Middle East or a pharmaceutical cleanroom in Western Europe.
Select dimensions and specifications optimized for common engineering designs.
Standard Dimension Specifications:
Key Advantages: Formulated for uniform cell structures with a >98% closed-cell rate, providing low moisture absorption and consistent thermal insulation. The flexible compound offers compression resilience of over 80%, while fire-retardant additives deliver reliable flame resistance.
Standard Dimension Specifications:
Key Advantages: High-precision extrusion provides consistent wall thickness for seamless pipe coverage. The closed-cell structure limits moisture absorption to prevent pipeline condensation, freezing, and heat loss.
Detailed technical answers to common questions about selecting, installing, and maintaining elastomeric foam materials.
Elastomeric rubber foam insulation is widely used for HVAC ductwork, commercial air conditioning pipes, building thermal insulation, industrial cold water piping, process fluid lines, and sound isolation. Its high water vapor resistance makes it particularly effective for systems prone to condensation, such as chilled water lines.
Our rubber foam materials contain fire-retardant additives that allow them to self-extinguish when exposed to fire. They are tested to international fire safety standards, achieving BS 476 Parts 6 & 7 (Class 0 and Class 1), UL94 (V-0 rating), and ASTM E84 compliance, ensuring they meet the safety requirements of global building and industrial projects.
Closed-cell rubber foam is flexible, lightweight, and highly resistant to moisture ingress. This makes it ideal for HVAC, plumbing, and low-temperature refrigeration systems where moisture resistance is critical. Rock wool, on the other hand, is a rigid, fibrous material capable of withstanding very high temperatures, making it better suited for industrial steam lines, ovens, and high-heat processing applications.
Yes, we provide full OEM and custom services. We can adjust the thickness, inner diameter, density, and backing materials (such as aluminum foil or self-adhesive backings) to match specific project requirements. Custom branding and packaging are also available upon request.
Our manufacturing and processing lines comply with ISO 9001 and ISO 14001 guidelines. Our materials hold major international certifications, including CE, REACH, RoHS, UL94, ASTM, and BS 476, ensuring compliance with environmental and technical regulations in European, North American, and Asian markets.
Yes, we maintain a complete traceability system. Each batch of raw material is documented, and every production run is assigned a tracking number. This allows us to trace batches from processing to final delivery, ensuring consistent quality and performance for large projects.
Our automated extrusion lines produce sheet rolls in thicknesses ranging from 6mm to 50mm, allowing us to support different design specifications for thermal resistance and space constraints.
Under normal operational conditions and when installed according to manufacturer guidelines, our rubber foam insulation has a service life of 10 to 15 years. Using protective claddings, such as aluminum foil jackets, can further extend its lifespan in demanding outdoor or UV-exposed environments.
Need direct manufacturing pricing for your commercial HVAC system or industrial pipeline project? Contact our engineering and sales department for detailed datasheets, product samples, and custom pricing models.
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