Kingflex
Select premium insulation materials designed to isolate temperature differentials, suppress sound, and protect piping systems globally.
Managing modern process piping infrastructure requires high thermal resistance, anti-condensation technologies, and extreme fire resilience.
Worldwide infrastructure development, chemical processing plants, and commercial HVAC networks encounter a mutual engineering challenge: heat transmission management and condensation prevention. Metal pipelines, whether carbon steel, stainless steel, or copper, operate as active thermal conductors. Without professional elastomeric insulation barriers, unprotected metal pipes suffer from severe energy losses and structural degradation.
Industrial procurement teams struggle with multiple challenges across global supply chains. Extreme cold processing loops require cryogenic-grade rubber foam to block ambient heat ingress, while steam lines demand high-density rock wool to contain intense heat safely. Choosing the right insulation material is critical for system longevity, energy conservation, and operational safety.
As a leading Chinese industrial insulation manufacturing group, Kingflex supplies premium materials designed to prevent condensation, control thermal loss, and isolate sound. Our systems protect multi-kilometer HVAC distributions and ultra-cold liquefied gas infrastructure worldwide.
Comparing closed-cell elastomers and high-density mineral wool fibers for specific engineering applications.
Manufactured with a closed-cell rate exceeding 98%. Offers excellent moisture resistance, low thermal conductivity, and flexibility. Specifically designed for HVAC chilled water, commercial refrigerant loops, and cryogenic pipelines.
Constructed from high-density volcanic rock fibers. Completely non-combustible with exceptional sound attenuation properties. The material of choice for high-temperature steam distribution, furnace piping, and extreme fire barrier zones.
Combines closed-cell barriers with protective external jackets. Designed to prevent Corrosion Under Insulation (CUI) by keeping moisture away from metallic pipe surfaces.
| Performance Metrics | Kingflex Elastomeric NBR/PVC Rubber Foam | High-Density Industrial Rock Wool |
|---|---|---|
| Primary Thermal Conductivity | λ ≤ 0.034 W/(m·k) at 0°C | λ ≤ 0.038 - 0.044 W/(m·k) at 70°C |
| Service Temperature Thresholds | -40°C to +105°C (Up to -200°C for Cryogenic formulation) | Ambient up to +650°C (Process Piping Maximums) |
| Moisture Resistance Performance | Built-in Vapor Barrier (μ Value ≥ 10,000) | Requires external vapor cladding / moisture protection |
| Combustion Classification | BS 476 Part 7 Class 1, UL94 V-0, ASTM E84 Compliant | Euroclass A1 Non-combustible, BS 476 Part 4 Certified |
| Typical Architectural Applications | HVAC chilled water lines, VRF pipes, sound damping ducts | High-pressure steam pipes, central heating mains, fire walls |
Established in 1979 under the Jinwei Group, we supply high-performance thermal insulation products to global industries.
Kingflex was established by the Jinwei Group, which has a manufacturing history dating back to 1979. We were the first thermal insulation manufacturer established north of the Yangtze River. Today, we operate from Dacheng, China—a hub for green building material development.
Our production facilities feature 5 automated extrusion assembly lines. These lines maintain an annual output capacity exceeding 600,000 cubic meters. This consistent manufacturing output makes Kingflex a designated supplier for major energy, power generation, and petrochemical projects in China and internationally.
Our team includes 8 dedicated R&D engineers, 6 international sales consultants, and 230 factory employees. They work together to ensure every batch of insulation meets global technical and logistical standards.




From LNG terminals to commercial real estate projects, Kingflex products provide reliable thermal control under demanding conditions.




We work closely with global engineering procurement contractors (EPCs) to ensure technical compliance and smooth project execution. Below are screenshots of direct communications with our clients regarding order logistics, custom dimensions, and product tracking:



















Technical insulation solutions designed for cryogenic conditions and acoustic control applications.
Detailed physical dimensions and standard specifications for Kingflex insulation tubes and sheet rolls.
Our elastomeric NBR/PVC insulation sheets are designed for large-diameter pipelines, ventilation ductwork, and flat equipment surfaces. They provide thermal protection and help control condensation.
Extruded hollow profiles designed for direct installation over steel, copper, or PVC piping systems. The flexible composition simplifies installation around elbows and bends.




Every batch of material is traceable from raw formulation to dispatch, meeting global regulatory requirements.
We trace each production batch from raw NBR/PVC compound mixing through extrusion, vulcanization, and final packaging. In-line inkjet printing marks every meter of pipe or sheet with production timestamps, line IDs, and technical ratings, ensuring accountability at the job site.
Kingflex materials undergo regular testing to comply with regional building codes and safety regulations:
Answers to common engineering and procurement questions regarding elastomeric and mineral wool insulation systems.