Engineered to suppress flame spread and minimize smoke density under fire conditions.
In modern construction, fire safety standards have shifted from reactive protection to active material suppression. A Class 0 Fire Rating represents the highest level of performance under British Standard BS 476, specifically comprising compliance with both Part 6 (Fire Propagation index I < 12 and sub-index i1 < 6) and Part 7 (Class 1 Surface Spread of Flame). Achieving this rating means a material does not assist in flame propagation and contributes negligibly to thermal build-up during fires.
For MEP engineers and HVAC specifiers, selecting Class 0 elastomeric and nitrile foam systems is crucial for protecting vertical shafts, plenums, and cleanrooms. Beyond preventing rapid fire spread, current market trends prioritize low toxicity and reduced smoke density (FSI < 25 / SDI < 50 according to ASTM E84). High-performance closed-cell matrices restrict moisture permeability, preventing structural dampness and dry rot while safeguarding human life in critical infrastructure.
Ensuring compliance across diverse jurisdictions with certified insulation systems.
B2B procurement requires extensive certification. Our materials comply with BS 476, CE, REACH, RoHS, UL94, and ASTM. Complete production batch tracking ensures verified compliance for projects in Europe, North America, and the Middle East.
With a thermal conductivity (λ) ≤ 0.034 W/(m·K) at 0°C, our closed-cell structures prevent energy transfer. This minimizes thermal bridging and eliminates condensation risks on chilled water pipes and HVAC ductwork.
Featuring a high moisture resistance factor (μ ≥ 10,000), our closed-cell rubber foam forms a built-in vapor barrier. This prevents moisture ingress, avoiding mold growth and Corrosion Under Insulation (CUI) without auxiliary coatings.
Kingflex Insulation Co., Ltd. is a professional manufacturing and trading combo for thermal insulation products. Our research, development, and production departments are located in Dacheng, China, a prominent hub for energy-efficient building materials. As an energy-saving and environmentally friendly enterprise, we integrate research, development, production, and sales.
Established by the Jinwei Group, which holds a heritage of more than 40 years since its founding in 1979, Kingflex is built on decades of thermal insulation expertise. Jinwei Group was the first manufacturer of thermal insulation materials north of the Yangtze River. Operating with energy conservation as our core mission, we provide consultancies, R&D production, installation guidance, and post-sale services.
Our employees drive Kingflex's collaborative work culture. The Kingflex team is a closely-knit group focused on delivering first-class service to clients globally.
Our operational capacity is supported by 8 professional R&D engineers, 6 international sales specialists, and 230 production line workers, enabling us to manage custom B2B projects and large order volumes.
Smart manufacturing lines delivering high-volume Class 0 fire retardant insulation.
At present, Kingflex operates 5 large automatic assembly lines, yielding an annual production capacity exceeding 600,000 cubic meters. Our facilities serve as designated production bases for key energy and chemical projects.
Our Factory 4.0 system integrates computerized raw material dosing, automated continuous vulcanization, and real-time inline thickness control. This ensures batch-to-batch consistency in density (40-55 kg/m³) and uniform closed-cell distribution. Located in Dacheng, we leverage established raw material access and regional shipping hubs, allowing us to maintain stable pricing and dependable supply lines during global freight fluctuations.
Providing thermal stability and structural fire safety in diverse installations.
Prevents condensation and thermal loss in high-humidity ambient environments. Suitable for high-occupancy commercial projects including retail malls, hospitals, and transit hubs.
Specially designed cryogenic elastomeric insulation (e.g., Dolefin systems) preserves temperatures down to -200°C. Protects LNG terminals and chemical pipelines from structural stresses caused by freeze-thaw cycles.
High-density open-cell matrices absorb acoustic energy in mechanical rooms, reducing structural resonance and environmental noise transmission in complex buildings.
Standardized properties for engineering design calculations.
| Property Parameter | NBR/PVC Elastomeric Foam Sheet Roll | Elastomeric Insulation Pipe Section |
|---|---|---|
| Base Polymer Composition | NBR/PVC Synthetic Blend (Nitrile Butadiene Rubber) | NBR/PVC Microcellular Elastomer |
| Standard Thickness Range | 6mm to 50mm | 9mm to 40mm (Internal ID: 6mm - 114mm) |
| Density Range | 40 - 55 kg/m³ | 40 - 55 kg/m³ |
| Service Temperature Limit | -40℃ to +105℃ (Cryogenic series down to -200℃) | -40℃ to +105℃ |
| Closed-Cell Content | Over 98% uniform structure | Over 98% uniform structure |
| Fire Safety Rating | BS 476 Part 6 & Part 7 Class 0, UL94 V-0, ASTM E84 | BS 476 Class 0, Self-extinguishing off fire |
| Thermal Conductivity (0°C) | ≤ 0.034 W/(m·K) | ≤ 0.034 W/(m·K) |
| Moisture Permeability Factor | μ ≥ 10,000 | μ ≥ 10,000 |
Inspected facilities and products certified by global standards organizations.
Every batch of Class 0 fire retardant NBR foam sheets and tubes undergoes material verification. Traceability codes printed directly on the material allow tracing back to the raw material formulation, curing temp, and QC inspectors.
Verified correspondence and feedback from international buyers.
Class 0 fire-rated thermal insulation installed in commercial and industrial settings.
Addressing engineering, regulatory, and mechanical questions about our insulation materials.
Complete B2B sourcing options for cryogenic, acoustic, and high-temp rubber insulation.
For projects requiring hybrid designs, our factory supplies companion products including rock wool slabs and flexible foil laminates to support high-temperature thermal barrier applications.
Kingflex
