Engineered rubber foam panels, pre-formed insulation tubes, and foil-clad rolls ready for volume procurement.
Established as a core venture of the prestigious Jinwei Group (founded in 1979 as the first thermal insulation manufacturer north of the Yangtze River), Kingflex Insulation Co., Ltd. has evolved into a premier global powerhouse combining research development, massive production capacity, and global trade solutions.
Operating from Dacheng, China—the recognized capital of green building materials—our production campus centers its development principles strictly around structural efficiency, thermal containment, and strict environmental parameters. We provide full-lifecycle insulation solutions covering design consultation, R&D formulation, custom dimension calibration, on-site installation coordination, and dedicated post-project verification.
How project engineers and purchase managers maximize efficiency while eliminating performance risks.
In humid zones and mechanical HVAC ducts, thermal bridging triggers localized condensation. Closed-cell rubber foam provides a continuous vapor barrier, keeping moisture transmission index (μ-value) consistently above 10,000.
Standard materials crack at sub-zero ranges. Our proprietary cryogenic rubber formulations maintain structural flexibility down to -200°C (-328°F), absorbing extreme thermal expansions safely.
Adhering strictly to Class 0 / Class 1 flame retardant properties. The materials release zero toxic gases during ignition, extinguishing immediately upon removal of the external flame source.
Standard reference guide for project design and compliance checks.
Designed for large-diameter distribution lines, flat surfaces, structural ductwork, and custom shapes. Employs uniform micro-cell foaming technology that ensures density and heat transfer coefficients remain highly consistent.
| Parameter | Technical Value / Range |
|---|---|
| Material Base | NBR / PVC Premium Hybrid |
| Available Thicknesses | 6mm to 50mm |
| Apparent Density | 40 to 55 kg/m³ |
| Service Temperature Range | -40℃ to +105℃ (Extended Cryogenic custom lines available) |
| Moisture Resistance Factor | μ ≥ 10,000 (ASTM E96) |
| Thermal Conductivity (0℃) | ≤ 0.034 W/(m·k) |
Pre-extruded tubes designed specifically for fast slips over standard piping systems. Excellent dimensional tolerances ensure a snug, gap-free fit, directly preventing thermal leakage along seams.
| Parameter | Technical Value / Range |
|---|---|
| Material Base | NBR / PVC Closed-Cell |
| Wall Thickness Range | 9mm to 40mm |
| Internal Diameter (ID) | 6mm to 114mm (Standard piping matching) |
| Flammability rating | Class 0 (BS 476 Part 6 & 7), Class V-0 (UL94) |
| Water Absorption Rate | ≤ 0.1% by volume |
| Sound Attenuation Index | Rw up to 32 dB (System Integrated) |
Analyzing key shifts in green building regulations and high-performance industrial foam requirements.
International environmental targets are forcing a transition toward halogen-free, low-VOC (Volatile Organic Compounds) insulating materials. Kingflex is leading this shift by modifying polymer formulas to reduce ecological footprints while maintaining class-leading fire safety ratings.
CUI costs petrochemical and thermal plants billions annually. Our closed-cell rubber insulation prevents outside moisture from contacting carbon steel pipes. By maintaining a dry surface boundary, the system naturally limits oxidative reactions without requiring complex coatings.
Outdoor mechanical environments demand mechanical protection against UV radiation, hail, ozone, and physical impacts. Integrating an aluminum layer shields the primary NBR core, extending the operational lifespan from 10 years to over 20 years in harsh conditions.
Ensuring every cubic meter of elastomeric insulation complies with international standards.
Our factory runs 5 large-scale, automated production lines. Raw components are systematically blended and chemically aerated within sealed environmental chambers. This guarantees a closed-cell rate exceeding 98%, preventing water vapor from bypassing the cells.
Each batch undergoes random testing in our onsite Quality Assurance Center, measuring thermal conductivity fluctuations under simulated climate chambers, compression resilience, and aging traits.



For large-scale international engineering bids, verification credentials are vital for customs and construction sign-off. Kingflex products carry approvals recognized worldwide:




Delivering high-performance insulation solutions for infrastructure, HVAC networks, and industrial systems.




We work directly with EPC contractors to deliver customized solutions for major industrial and civil structures. By adjusting wall thicknesses and integrating foil, glass-cloth cladding, or self-adhesive backings, we streamline logistics and save installation time on site.
Our project footprint spans airports, regional hospitals, industrial process piping, pharmaceutical facilities, sub-zero cold chain storage networks, and luxury commercial complexes.












We foster close communication with clients, ensuring seamless execution from design sign-off to delivery.
Our technical sales team provides real-time logistics support, dimensional updates, and testing verification sheets directly to your design desk. This ensures full transparency from procurement to installation.



Our logistical tracking systems keep you updated throughout shipping, port clearance, and final delivery, minimizing delays on site.


Essential Q&As addressing thermal calculations, material limits, and installation standards.
Complete your system specification with our low-temperature cryogenic formulations and protective options.