Direct supply from state-of-the-art automatic production lines with global certifications
A global leader in thermal & acoustic elastomeric insulation systems
Kingflex Insulation Co., Ltd. is a professional manufacturing and trading combo specializing in premium thermal and cryogenic insulation products. Strategically headquartered in Dacheng, China—widely recognized as the green building materials capital—Kingflex operates as an energy-saving, environmentally conscious enterprise. We integrate state-of-the-art research and development, scaled automated manufacturing, and a dedicated international logistics network.
We are a core member of the prestigious Jinwei Group, which boasts a rich heritage of over 40 years. Founded in 1979, Jinwei Group established the first advanced manufacturing base for thermal insulation materials north of the Yangtze River. Driven by the core philosophy of "Energy Saving and Consumption Reduction," Kingflex delivers end-to-end insulation systems encompassing professional engineering consulting, innovative R&D, certified production, on-site installation guidance, and global post-sale warranty services.
Why selecting the correct thickness is critical for condensation control & thermal efficiency
In modern industrial refrigeration, HVAC distribution, and cryogenic processing, selecting the precise thickness of elastomeric insulation is critical to system performance. Inadequate thickness shifts the outer surface temperature of the pipe below the ambient dew point, causing immediate condensation. This condensation leads to structural damage, mold growth, and a drastic loss in energy efficiency.
Our closed-cell NBR/PVC elastomer insulation operates by trapping inert dry air within millions of independent micro-cells. With a closed-cell rate exceeding 98% and a high water vapor resistance factor (μ-value), Kingflex products prevent moisture ingress. By doing so, they eliminate the risk of corrosion under insulation (CUI).
| Nominal Pipe Size (IPS) | Copper Tubing (OD) | Low Temp Sys (-40°C to -10°C) | Chilled Water Sys (5°C to 15°C) | Hot Water & Steam (to 105°C) |
|---|---|---|---|---|
| 1/4" to 3/8" (6-10 mm) | 1/4" to 1/2" | 19 mm (3/4") Thickness | 9 mm (3/8") Thickness | 13 mm (1/2") Thickness |
| 1/2" to 3/4" (15-20 mm) | 5/8" to 7/8" | 25 mm (1") Thickness | 13 mm (1/2") Thickness | 19 mm (3/4") Thickness |
| 1" to 1-1/4" (25-32 mm) | 1-1/8" to 1-3/8" | 32 mm (1-1/4") Thickness | 13 mm (1/2") Thickness | 19 mm (3/4") Thickness |
| 1-1/2" to 2" (40-50 mm) | 1-5/8" to 2-1/8" | 38 mm (1-1/2") Thickness | 19 mm (3/4") Thickness | 25 mm (1") Thickness |
| 2-1/2" to 3" (65-80 mm) | 2-5/8" to 3-1/8" | 50 mm (2") Thickness | 19 mm (3/4") Thickness | 32 mm (1-1/4") Thickness |
| 4" to 6" (100-150 mm) | 4-1/8" to 6-1/8" | 50 mm (2") Thickness | 25 mm (1") Thickness | 38 mm (1-1/2") Thickness |
For installations in tropical environments or regions with relative humidity exceeding 85%, the insulation thickness should be increased by one standard size to avoid condensation on the outer surface of the jacket.
Why global EPC contractors and distributors source directly from Kingflex
Our 5 high-speed automated extrusion lines maintain strict density control (40-55 kg/m³). This guarantees thickness uniformity across all sheets and pipes, minimizing human error and material waste.
Located in Dacheng, the green building materials hub of China, we benefit from deep upstream chemical access. This localized supply chain keeps our raw NBR and PVC costs highly competitive.
Our proximity to Tianjin Port enables fast, low-cost freight loading. Efficient logistics ensure timely overseas shipping, maintaining consistent transit schedules for global distributors.
Every batch of Kingflex elastomeric foam undergoes rigorous testing before shipment. Our on-site R&D department features specialized equipment to test thermal conductivity, moisture permeance, and flammability. This internal testing guarantees that our materials meet global compliance standards before they leave the factory floor.
Ensuring fire safety, environmental standards, and traceable manufacturing
International building codes require strict verification of thermal insulation performance. Kingflex products undergo continuous testing by independent accreditation bodies. This compliance ensures that our materials meet localized mechanical, environmental, and structural regulations worldwide.
BS 476 (Part 6 & 7): Class 0 and Class 1 ratings for low flame spread index and low heat release rates. Critical for high-occupancy commercial projects.
UL94 Flammability Standard: Rated V-0, meaning fire self-extinguishes within seconds without generating flaming droplets.
REACH & RoHS Directives: Halogen-free, heavy metal-free, and ozone-friendly formulation. This environmental design prevents toxic outgassing during a fire, protecting lives and building systems.
Tailored configurations optimized for commercial, industrial, and transport sectors
Ensures energy efficiency in HVAC ducts and water lines. Helps maintain indoor air quality by preventing mold growth in commercial offices, hospitals, and residential towers.
Engineered to handle extreme temperatures down to -200°C. Maintains thermal performance in liquid natural gas (LNG) systems and biomedical cold storage pipelines.
Provides salt-spray resistance, low smoke emissions, and vibration dampening. Trusted on offshore drilling rigs, commercial marine vessels, and naval ships.
Material: Premium NBR/PVC blend
Standard Dimensions: Thickness 6mm - 50mm
Density: 40 - 55 kg/m³
Operating Range: -40°C to +105°C
Performance Advantages: Uniform foaming, closed-cell rate >98%, high elasticity, compression resilience >80% for long-term thermal control.
Material: Premium NBR/PVC blend
Standard Dimensions: Thickness 9mm - 40mm; ID 6mm - 114mm
Density: 40 - 55 kg/m³
Operating Range: -40°C to +105°C
Performance Advantages: Consistent extrusion, easy slip-on installation, high moisture resistance, and reliable pipe freezing protection.
Seamless international shipping, order processing, and custom branding services
Buying from Chinese factories requires structured logistics planning. Kingflex streamlines this process with dedicated international support teams. We manage container loading, customs clearance, and inland transportation directly, ensuring your cargo arrives safely and on time.
We use heavy-duty, moisture-resistant packaging to protect our products during transit. Our tracking systems provide real-time shipping updates. Whether you require standard container shipping or expedited air cargo for urgent project deadlines, our logistics team ensures hassle-free delivery.
The transition toward halogen-free formulas and low-smoke thermal insulation
The global construction industry is shifting toward sustainable materials. Environmental certifications like LEED, BREEAM, and DGNB award points for materials that do not emit volatile organic compounds (VOCs) and are free of ozone-depleting substances. In response, Kingflex has introduced advanced halogen-free formulas to meet these green building requirements.
Traditional elastomers can release hydrochloric acid gas during high-temperature combustion. Our halogen-free sheets and pipes solve this issue, protecting sensitive equipment and building occupants. In addition, our manufacturing bases use energy-recovery systems, reducing our carbon footprint and supporting circular economy initiatives.
Everything you need to know about purchasing and specifying Kingflex insulation
Premium solutions for industrial applications, low-temperature systems, and acoustic comfort
Specialty elastomeric, Rockwool, and multi-layered configurations
Continuous quality control across 5 fully-automated manufacturing lines
Continuous loading validation and dispatch tracking for global partners
Kingflex
