Kingflex
High-performance elastomeric foam tubes, sheets, and cryogenic systems engineered for demanding industrial environments.
In modern industrial refrigeration, HVAC engineering, and cryogenic processes, maintaining thermodynamic stability while preventing condensation is a critical operational parameter. Ult (Ultra-Low Temperature) Insulation Sheet Rolls manufactured by Kingflex stand at the intersection of material science and mechanical efficiency.
Traditional open-cell insulation materials fail under extreme thermal gradients due to water vapor intrusion. When vapor penetrates the insulation, it condenses and freezes, forming ice crystals that drastically increase the material's thermal conductivity (K-value). Kingflex's NBR/PVC elastomeric formulations utilize a closed-cell matrix with a closed-cell ratio exceeding 98%. This dense cell geometry acts as a built-in vapor barrier, ensuring structural longevity, high moisture resistance, and continuous thermal protection down to cryogenic temperatures.
By preventing moisture infiltration and limiting heat transfer, our sheet rolls allow HVAC&R systems to operate at peak efficiency, minimizing parasitic heat gain and mitigating the risk of Corrosion Under Insulation (CUI) in pipeline systems.
Designed for extreme durability, fire safety compliance, and low thermal conductivity.
Our manufacturing plant supports high-precision formulations designed for multiple environments, ranging from cryogenic processing plants to high-humidity commercial HVAC installations.
| Parameter | Standard Specs |
|---|---|
| Material Matrix | Premium Nitrile-Butadiene Rubber (NBR) & Polyvinyl Chloride (PVC) Alloy |
| Thickness Range | 6mm to 50mm (Customizable sizing available) |
| Density Profile | 40 - 55 kg/m³ for optimal flexibility and structural strength |
| Service Temperature Limit | -40℃ to 105℃ (Ultra-Low Temp cryogenic systems up to extreme lows) |
| Thermal Conductivity (K-Value) | ≤ 0.034 W/(m·K) at 0℃ |
| Water Vapor Permeability | Moisture resistance factor (μ) ≥ 10,000 |
| Fire Resistance Standards | BS 476 Class 1, UL94 V-0, ASTM E84 Compliant |
Backed by 40 years of manufacturing lineage, state-of-the-art automation, and globally recognized quality systems.
Established by the Jinwei Group (Kingway Group founded in 1979), Kingflex has built a 40-year reputation as the first thermal insulation manufacturer north of the Yangtze River. Today, our research, development, and high-volume production facility is located in Dacheng, China—the recognized capital of energy-efficient green building materials.
Our site features 5 automated extrusion and foaming production lines. As an authorized supplier for the Ministry of Energy, Ministry of Electric Power, and Ministry of Chemical Industry, we support major domestic and international infrastructure projects with continuous, high-volume manufacturing capabilities.
Our Team: With 8 specialized R&D engineers, 6 international sales consultants, and a dedicated production workforce of 230, we combine research, customer service, and manufacturing quality.
To support projects worldwide, our material configurations undergo rigorous testing for fire safety, environmental safety, and thermal properties. Kingflex holds certifications including BS 476, CE, REACH, RoHS, UL94, and ASTM.
Providing customized insulation solutions for critical processes, extreme cold chains, and large-scale structures.
Condensation control on chilled water lines, fan coil units, and distribution ductwork. The closed-cell structure prevents vapor transmission in high-relative-humidity operating environments, preventing mold growth and moisture damage.
Engineered for extreme sub-zero temperatures. Provides thermal insulation for liquefied natural gas (LNG), liquid nitrogen, and ethylene systems, mitigating thermal contraction stresses and heat leaks.
Protects industrial steam loops, chemical transport lines, and large storage tanks. Our insulation handles cycling temperatures, helping optimize process stability and safety.
Our physical testing laboratory screens every batch of raw elastomer and foaming agent. Key metrics, including material density, tensile strength, cell structure uniformity, and flame resistance, are systematically measured before shipping.
We work closely with structural design engineers and HVAC consultants during the initial project phases. Our team provides technical support, detailed installation manuals, thermal calculations, and on-site support to ensure field performance matches design specifications.
A practical guide for industrial buyers, procurement managers, and mechanical engineering contractors.
Industrial procurement requires managing total cost of ownership, regulatory compliance, and supply chain logistics. Here is how Kingflex supports large-scale global projects:
Before issuing a request for quotation (RFQ), confirm these design parameters with your engineering team:
Approved for critical facilities, industrial plants, and commercial buildings worldwide.
Kingflex insulation products are used in hotels, healthcare facilities, cold storage systems, petrochemical refineries, and power generation plants. Our elastomer rolls perform consistently in hot, humid coastal areas as well as cold, dry continental zones.
By preventing condensation on chilled water lines and cooling systems, our products support indoor air quality and help protect building structures from moisture damage.
"The closed-cell configuration of Kingflex insulation sheet rolls has helped resolve condensation challenges on our chilled water distribution loops. The material maintains its shape and thickness at support locations, ensuring consistent insulation performance."
— Senior Mechanical Lead, GCC Petrochemical Project
Technical answers to common questions about elastomeric closed-cell foam performance, specifications, and manufacturing.
It is mainly used for HVAC ducts, air conditioning pipes, building thermal insulation, industrial pipeline cold insulation, and sound insulation. Its closed-cell elastomeric structure prevents heat transfer and blocks moisture, making it effective for preventing condensation on chilled water pipes and saving energy on hot utility lines.
Yes, our rubber foam insulation products are fire retardant, meeting the fire safety standards of commercial building and industrial projects. Our formulations include halogen-based and phosphorus flame retardants that help extinguish fire quickly, reduce flame spread, and limit smoke generation, meeting international standards such as BS 476, UL94, and ASTM E84.
Rubber foam is flexible, closed-cell, and moisture-proof, which makes it suitable for HVAC, chilled water piping, and building cold-insulation systems. It doesn't require an additional vapor barrier. Rock wool is an open-fiber material that is highly heat-resistant and fireproof. It is commonly used for industrial high-temperature steam lines, furnaces, and applications where water ingress is not a primary concern.
Yes, we support OEM and custom manufacturing services to meet specific project needs. We can customize sheet dimensions, roll lengths, wall thicknesses, pre-cut shapes, and self-adhesive backings, as well as apply aluminum foil or protective coatings to match your mechanical specifications.
Our products have passed BS 476, CE, REACH, RoHS, UL94, ASTM, and other international certifications. These independent laboratory validations confirm compliance with environmental, toxicological, and safety standards required by engineers globally.
Yes, Kingflex products have traceability. Each production run is assigned a unique batch code. This code links to raw material test reports, manufacturing records, and quality control logs, allowing tracking from delivery back to raw chemical inputs.
We can produce sheet roll thicknesses from 6mm up to 50mm. Thicker options help meet demanding thermal insulation requirements on low-temperature systems without needing multi-layer installations.
The estimated service life is about 10 to 15 years in typical environments. Correct installation, operating within designated temperature limits (-40℃ to 105℃), and using UV-protective coatings or jackets on outdoor installations help maximize longevity.
Kingflex Insulation Co., Ltd. is a manufacturing and trading group specializing in thermal insulation products. Our R&D and production facilities are based in Dacheng, China—a hub for energy-efficient building materials. We operate with a focus on resource efficiency, energy conservation, and technical support at all stages of installation.
Kingflex was established by the Jinwei Group (also known as the Kingway Group, founded in 1979). With over 40 years of industry experience, the group was the first thermal insulation manufacturer established north of the Yangtze River, contributing to the development of the region's energy-saving materials industry.
At present, Kingflex operates 5 automated production lines with an annual capacity of over 600,000 cubic meters. We are an approved supplier for the Ministry of Energy, the Ministry of Electric Power, and the Ministry of Chemical Industry, supporting large-scale infrastructure projects.
Select from our verified line of NBR/PVC elastomeric thermal pipe coatings, sound barriers, and thermal sheets.
