Kingflex
Direct supply options from our fully automated manufacturing facilities, built to satisfy rigid commercial criteria and international performance safety benchmarks.
In modern industrial and commercial design, thermal efficiency is no longer simply about cost reduction; it is a core structural component of global decarbonization policies. HVAC systems, chilled water circuits, and cryogenic piping lines operate within tight energy margins. As global regulations like the European Union's Energy Performance of Buildings Directive (EPBD) and ASHRAE Standard 90.1 tighten, engineers must eliminate thermal losses while preventing moisture intrusion.
Elastomeric rubber foam insulation (NBR/PVC based) has emerged as the preferred choice for industrial applications. Unlike open-cell or mineral wool products, closed-cell structures retain their thermal performance even when exposed to high moisture environments. Our market intelligence indicates that engineering teams increasingly specify closed-cell structures to avoid Corrosion Under Insulation (CUI) and eliminate structural mold risks.
Examine the mechanical properties of Kingflex elastomeric insulation materials. Engineered to satisfy rigorous performance criteria in high-humidity HVAC environments and sub-zero cryogenic systems.
| Performance Indicator | Reference Standards | NBR/PVC Elastomeric Foam Value | Engineering Value |
|---|---|---|---|
| Thermal Conductivity (λ) | ASTM C518 / ISO 8301 | ≤ 0.034 W/(m·k) at 0 °C | Optimal energy conservation limits |
| Water Vapor Permeance (μ) | EN 12086 / ASTM E96 | ≥ 10,000 | Eliminates the need for external vapor barriers |
| Fire Performance Classification | BS 476 Parts 6 & 7 / UL 94 | Class 0 / Class 1 / V-0 Rated | Approved for public commercial structures |
| Smoke Density & Toxicity | GB/T 8627 / ASTM E662 | SDR ≤ 75% | Reduced particulate output in critical zones |
| Dimensional Stability | GB/T 8811 | ≤ 10% shrinkage over service life | Prevents joints from opening due to contraction |
Kingflex Insulation Co., Ltd. represents the peak of thermal insulation manufacturing. Operating in the green-building materials center of Dacheng, China, we combine 40 years of manufacturing experience with modern automated production.
Our parent company, the Jinwei Group, was established in 1979 as the pioneer manufacturer of thermal insulation materials north of the Yangtze River. Over the past 40 years, this foundation has enabled Kingflex to grow into an integrated enterprise covering research and development, manufacturing, supply chain logistics, and after-sales support.
Today, our facility runs 5 large automated assembly lines, achieving an annual production capacity of over 600,000 cubic meters. These capacity metrics make us a designated supplier for major energy, power generation, and chemical ministries globally.
Our R&D department features 8 professional engineers focusing on molecular structures and eco-friendly blowing agents. Backed by 230 production personnel and 6 international trade representatives, our team delivers consistent quality and comprehensive technical support to commercial buyers worldwide.
Our commitment to international standards is backed by certifications and verifiable quality control. Every batch of Kingflex insulation is trace-coded for complete supply-chain transparency.
True authority comes from satisfied clients and verified trade communication. We maintain communication logs, packaging checks, and project sign-offs for all international contracts.
Our products have passed BS 476, CE, REACH, RoHS, UL94, and ASTM certifications. This ensures our elastomeric foam sheets, rolls, and pipes comply with local environmental and fire codes across North America, Europe, Asia, and the Middle East.





Explore real-world implementations of Kingflex insulation systems across commercial complexes, industrial plants, cold-storage zones, and petrochemical processing systems.
High-occupancy structures require quiet, efficient climate control. Our NBR/PVC elastomeric foam sheets line large air-handling ducts, mitigating noise pollution and energy loss. Because the material does not shed fibers, it keeps indoor air clean and safe for commercial environments like hospitals, retail centers, and residential developments.
Transporting liquified gases or maintaining sub-zero processing temperatures requires robust thermal barriers. Our flexible cryogenic insulation system remains stable under extreme temperature changes. This prevents fracturing, controls condensation, and protects expensive piping systems from corrosion.








How Kingflex is addressing future global energy goals and safety standards.
To meet strict indoor air quality (IAQ) and green building certification requirements (such as LEED and BREEAM), our R&D team is expanding production of halogen-free thermal tubing. This removes chlorine and bromine flame retardants, keeping toxicity and smoke opacity to a minimum during a fire.
By modifying NBR/PVC polymer structures with specialized plasticizers and stabilizers, we are extending the temperature range of our products. This ensures the insulation remains flexible and stable under severe temperature changes, from cryogenic applications to warm steam lines.
We are upgrading our manufacturing processes to lower energy consumption and utilize bio-based elastomers. Our goal is to reduce the carbon footprint of our insulation products, supporting builders and developers in meeting modern net-zero goals.




Find answers to common questions about thermal calculations, installation techniques, code compliance, and bulk wholesale logistics.
It is mainly used for HVAC ducts, air conditioning pipes, building thermal insulation, industrial pipeline cold insulation and sound insulation.
Yes, our rubber foam insulation are fire retardant, which meets the safety standards of building and industrial projects.
Rubber foam is flexible, closed-cell and moisture-proof, suitable for HVAC and building insulation; Rock wool is high-temperature resistant and fireproof, suitable for industrial high-temperature pipeline insulation.
Yes, we support OEM service to meet different project needs.
Our products have passed BS 476, CE, REACH, ROHS, UL94, ASTM and other international certifications, ensuring product quality and compliance with global standards.
Yes, Kingflex products have traceability.
We can produce from 6mm to 50mm thickness.
It will be about 10 to 15 years.
Browse our complete list of industrial products, including low-density options, cryogenic sheets, and specialized rock wool configurations.
Visual details of our insulation tubes, cryogenic boards, and mineral wool options.