Kingflex
Explore our high-performance thermal and acoustic insulation lines, engineered to satisfy international construction standards.
A comprehensive analysis of thermal efficiency, acoustic insulation, and environmental parameters in global commercial and industrial HVAC design.
Minimizing heat transfer (λ ≤ 0.034 W/m·K) across heavy industrial duct runs, reducing dynamic load offsets on central heating units.
Preventing localized condensation points by employing high-density closed-cell elastomers (water vapor barrier resistance μ ≥ 10,000).
Targeting structural system resonance and fluid air noises inside commercial supply lines using open-cell sound dissipation technologies.
Modern building codes, including ASHRAE 90.1, EU Energy Performance of Buildings Directive (EPBD), and localized green building standards, require thermal losses in air distribution ducts to be kept to an absolute minimum. Historically, hot air ducts were left uninsulated or wrapped in low-density fibrous batts, which degraded under humidity cycles and caused significant energy losses. Today, closed-cell elastomeric rubber foam insulation is preferred for hot air ducts operating up to 105°C due to its combined moisture barrier, low thermal conductivity, and ease of installation.
Expert Insight: According to thermal diagnostics, uninsulated or poorly insulated hot air ducts can lose up to 35% of thermal energy during delivery runs. Specifying a closed-cell elastomer with consistent wall thickness reduces this loss to less than 4% under extreme delta-T conditions.
Modern high-velocity commercial and industrial HVAC systems generate sound levels that can disrupt working environments. Attenuating this sound within the ductwork is critical. Kingflex open-cell rubber foam board acts as a sound-absorbing barrier, dampening fan motor hum and high-velocity air whistling. Combining external closed-cell thermal insulation with inner acoustic liners ensures compliance with international building acoustics standards while protecting air quality by eliminating fiber shedding.
A trusted global supplier of advanced thermal and acoustic insulation systems.
Kingflex Insulation Co., Ltd. is a professional manufacturing and trading combo for thermal insulation products. Our R&D and production facilities are based in Dacheng, China, a hub for energy-saving, eco-friendly green building materials.
Established by the Jinwei Group, which possesses over 40 years of industry experience since its founding in 1979, Kingflex has grown to become the first manufacturer of thermal insulation materials north of the Yangtze River. Today, we focus on helping customers reduce energy consumption and manage emissions.
We provide full-service solutions, from initial technical consulting and product development to custom manufacturing, installation guidance, and dedicated post-sale support.
Kingflex operates five high-capacity automated production lines, yielding an annual capacity of over 600,000 cubic meters. This scale has earned us designated supplier status from the Chinese Ministry of Energy, Ministry of Electric Power, and Ministry of Chemical Industry.
Our team includes eight dedicated R&D engineers, six international sales representatives, and 230 manufacturing specialists. Together, we work to ensure our products meet the standards of diverse markets worldwide.
Examine the mechanical properties, dimensional limits, and performance characteristics of our NBR/PVC elastomer range.
Specially developed for duct lining and large-diameter process pipes. The flat layout ensures seamless joint lines and quick installation.
| Property | Standard Value |
|---|---|
| Thickness | 6mm to 50mm |
| Density | 40 - 55 kg/m³ |
| Service Temp. Range | -40°C to 105°C |
| Closed Cell Rate | ≥ 98% |
| Compression Resilience | ≥ 80% |
Primary Applications: Air conditioning ducts, roof insulation, mechanical rooms, transport carriages, and industrial chemical process piping.
Prefit tubular insulation designed for pipes, offering reliable moisture control and protection against freezing.
| Property | Standard Value |
|---|---|
| Wall Thickness | 9mm to 40mm |
| Inner Diameter (ID) | 6mm to 114mm |
| Density | 40 - 55 kg/m³ |
| Thermal Conductivity | Low (≤0.034 W/m·K at 0°C) |
| Flexibility | High elastomeric memory |
Primary Applications: HVAC condensate lines, hot water systems, refrigeration pipelines, and industrial pipe networks.
Certifications verifying fire protection, material safety, and performance reliability across global regions.
Kingflex insulation is fire retardant and self-extinguishing. Our materials carry ratings under BS 476, UL 94, and international building safety codes.
Certified free of ozone-depleting substances, our products comply with REACH and RoHS regulations, making them suitable for cleanrooms and public facilities.
Every shipment is tested under ASTM standards to verify thermal performance, vapor barrier stability, and physical durability.
Our ongoing initiatives for improving insulation performance, processing chemistry, and thermal properties.
Improving NBR/PVC polymer formulations to raise fire resistance limits and lower thermal aging effects under continuous thermal loads.
Integrating nano-scale additives to limit cell wall thickness variance, improving both flexibility and structural density.
Lowering chemical processing emissions and expanding post-consumer recycling options for our elastomeric materials.
Kingflex insulation systems protect commercial HVAC ducts and industrial pipe runs across the globe.
Direct communication and technical approvals with our international engineering partners.
Technical answers to common questions about elastomeric rubber foam insulation.
It is primarily specified for insulation in HVAC ductwork, commercial air conditioning lines, structural building thermal envelopes, industrial piping, and sound-damping installations in noise-sensitive spaces.
Yes, our rubber foam insulation is fire-retardant and self-extinguishing, satisfying BS 476, UL 94, and other international safety requirements for commercial and industrial structures.
Rubber foam features a flexible, closed-cell structure that acts as a moisture barrier, ideal for HVAC systems and condensation control. Rock wool is a high-density mineral fiber that excels in high-temperature industrial piping and fire-stopping applications.
Yes, we offer complete OEM support, allowing customization of thicknesses, inner diameters, density profiles, and laminations to match specific project parameters.
Our products carry certifications including BS 476, CE, REACH, RoHS, UL 94, and ASTM. This ensures compliance with regulatory codes in major global markets.
Yes, we maintain traceability for all manufacturing runs, tracking raw material batches, quality test results, and final packaging records.
We manufacture rubber foam sheets in thicknesses ranging from 6mm up to 50mm, accommodating a wide range of thermal requirements.
Under standard operating conditions and with proper installation, Kingflex products provide a service life of 10 to 15 years.
Explore our advanced range of low-temperature elastomeric formulations and high-density thermal boards.
