Explore our premium selection of structural insulation sheets, tubes, and cold system tapes engineered for extreme performance.
Kingflex Insulation Co., Ltd. is a world-class manufacturing and trading combo specializing in elastomeric rubber foam thermal insulation and certified fire-retardant sealing solutions. Located in Dacheng, China—the recognized capital of green building materials—our R&D facility drives technology dedicated to global energy conservation and carbon reduction.
Established under the Jinwei Group, which holds a proud heritage spanning over 40 years since 1979, we were the pioneering force in manufacturing high-performance thermal insulation products north of the Yangtze River. Today, we supply custom solutions spanning initial consultation, advanced product tailoring, and expert field installation guidance.
Designing fire barriers and thermal isolations that align with strict UK building codes, climate conditions, and municipal regulations.
Ensuring compliance with the UK Building Regulations Approved Document B. Our fireproof elastomeric tapes and sheets are extensively used to wrap ductwork and cold water piping, preventing condensation while stopping horizontal fire propagation through compartment walls.
Subterranean transit infrastructure demands low smoke toxicity and high flame resistance. Kingflex elastomeric materials meet rigid toxic fume and smoke density regulations, offering reliable protection in enclosed passenger spaces and equipment tunnels.
Minimizing energy loss across the UK's municipal heating networks and cold-chain depots. The high moisture resistance factor (μ ≥ 10,000) blocks ambient dampness, preventing corrosion under insulation (CUI) in coastal climates.
Founded under the Jinwei Group framework established back in 1979, Kingflex has accumulated over four decades of thermal insulation intelligence. We designed the first production structures to support emerging heavy industrial complexes in Northern China.
Over the subsequent decades, our efforts migrated from regional supply to global system integration. We pioneered automated extrusion and foaming processes, making us one of the select organizations approved by the Ministry of Energy and Chemical Industries for major capital projects.
| Timeline Milestone | Industrial Capability Developed |
|---|---|
| 1979 | Jinwei Group formed; first thermal factory in Northern China. |
| 1995 | Introduced specialized closed-cell NBR/PVC chemical formulations. |
| 2008 | Initiated large-scale international exports across Europe and the Americas. |
| 2020+ | Achieved BS 476 Part 6 & 7 and CE Class 0 certification matrix. |
Accelerating product engineering to match global net-zero targets and ultra-low temperature requirements.
We are actively developing eco-friendly insulation variants designed to emit zero halogenated gases during combustion. This is geared to exceed environmental demands within the UK and European markets.
By integrating aerogel matrices into our flexible NBR/PVC closed-cell structure, next-generation Kingflex sheets will achieve thermal conductivity values (λ) below 0.030 W/(m·K), providing thinner profiles with superior thermal resistance.
Engineered self-adhesive systems designed specifically for quick installation in the damp UK weather, ensuring strong bonding without secondary mechanical fixings.
Our dedicated Research and Development department is staffed by eight senior chemical and mechanical engineers. We focus on enhancing polymer cross-linking density, refining flame retardant additive configurations, and testing thermal conductivity across varying service temperatures.
Operating a climate-controlled laboratory, the team tests material performance from extreme cryogenic levels (-196°C) to high-temperature steam applications (+105°C), ensuring Kingflex products perform under the most challenging real-world conditions.
All products undergo third-party evaluation to ensure alignment with British Standards and UK Building Regulations.
| Testing Standard | Certified Performance Parameter | UK Compliance Application | |
|---|---|---|---|
| BS 476 Part 6 & 7 | Class 0 Rating (Fire propagation & Flame spread limit) | HVAC ducting & piping passing through fire doors/barriers | Approved |
| EN 13501-1 | Class B-s3, d0 (Low smoke production, no flaming droplets) | General construction insulation requirements | Approved |
| UL94 | V-0 Rated self-extinguishing elastomer blend | Electrical enclosures, industrial cabling sleeves | Approved |
| REACH & RoHS | Zero hazardous plasticizers or heavy metal compounds | Safe for use in hospitals, food processing, and schools | Approved |
Partnering with Kingflex provides distinct supply chain advantages. Our proximity to key steel, chemical, and packaging hubs in Dacheng allows us to secure raw polymer matrices at stable prices, insulating partners from sudden cost fluctuations.
Additionally, our logistics network provides streamlined dispatch to major UK ports including Felixstowe, Southampton, and Liverpool, ensuring dependable supply even during peak shipping seasons.
Our commitment to transparent communication and prompt technical support has built long-term relationships with engineers in over 66 countries.
Designed for large-diameter pipelines, ventilation ducts, and custom structural applications, our flexible sheet rolls provide uniform thermal protection and excellent fire retardancy.
Engineered for quick slip-on installation on piping systems, this product reduces thermal loss and prevents condensation on cold lines.
Get answers to common questions about product installation, certifications, and technical specifications.
It is primarily used for commercial and industrial HVAC ducts, air conditioning lines, building thermal insulation, cold storage piping, and sound isolation applications.
Yes, our standard rubber foam insulation products are formulated with flame retardants, meeting major building and industrial fire safety standards.
Rubber foam is flexible, has a closed-cell structure, and offers excellent moisture resistance, making it ideal for HVAC systems. Rock wool handles higher continuous service temperatures, making it suitable for industrial high-temperature steam lines.
Yes. We support custom dimensions, density configurations, and integrated self-adhesive backing to match specific project designs.
Our range is certified to BS 476, CE, REACH, RoHS, UL94, and ASTM standards, ensuring compliance with global building and safety regulations.
Yes. Every shipment includes batch tracking references linked to raw material lot numbers and QC inspection logs.
We produce sheets and rolls in thicknesses from 6mm up to 50mm to meet various thermal performance requirements.
When installed in recommended indoor or protected outdoor environments, our insulation has a design service life of 10 to 15 years.
Explore our secondary selection of industrial tubes, specialty boards, and high-density acoustic solutions.
Explore our specialized range of elastomeric tubes, cryogenic wraps, and heavy-density rock wool thermal insulation modules.
Providing high-performance elastomeric and rock wool solutions to leading engineering and distribution networks worldwide.
Kingflex
