Kingflex
High-performance elastomeric and fiber-glass materials engineered for global engineering specifications.
Bridging the gap between Chinese manufacturing capabilities and UK building regulation compliance.
In the context of the UK construction and industrial building services sector, thermal efficiency is governed by strict compliance codes—most notably Part L of the Building Regulations (Conservation of Fuel and Power). Selecting the appropriate insulation is not merely a matter of material selection but an engineering calculation of R-Value (Thermal Resistance) and U-Value (Thermal Transmittance). As UK contractors and MEP (Mechanical, Electrical, and Plumbing) consultants seek cost-effective, high-performing procurement paths, the global manufacturing powerhouse of Dacheng, China, has emerged as a key supply corridor.
An insulation material's R-value measures its resistance to heat flow. The higher the R-value, the greater the insulating effectiveness. However, because the UK commonly specifies thermal properties using thermal conductivity ($\lambda$-value or Lambda, measured in $W/m\cdot K$) and U-value ($W/m^2\cdot K$), importing materials from China requires a robust cross-reference framework to ensure that physical thickness translations deliver equivalent thermal performance on site.
Years of Industrial History (Est. 1979 by Jinwei Group)
m³ Annual Production Capacity across 5 Automated Lines
Countries Supplied Globally over 16 Years of Export
Certified Class 0 Fire & Safety Compliance Standard
Direct thermal resistance conversion for NBR/PVC elastomeric rubber foam and rock/glass wool.
This technical chart outlines the thermal performance of Kingflex elastomeric NBR/PVC rubber foam insulation systems, glass wool, and rock wool. Calculations are calibrated at a mean test temperature of 0°C to 20°C in compliance with BS EN 12667 and BS EN ISO 8497.
| Material Category | Nominal Thickness (mm) | Thermal Conductivity ($\lambda$ at 10°C) | Calculated R-Value (Metric, $m^2\cdot K/W$) | Approx. US R-Value (per inch equivalent) | Typical UK Application Standard |
|---|---|---|---|---|---|
| Kingflex NBR/PVC Elastomeric Foam | 6mm | 0.034 W/m·K | 0.176 | R-1.0 | HVAC Condensate & Fan Coil Units |
| Kingflex NBR/PVC Elastomeric Foam | 9mm | 0.034 W/m·K | 0.265 | R-1.5 | Domestic Hot/Cold Water Pipework |
| Kingflex NBR/PVC Elastomeric Foam | 13mm | 0.034 W/m·K | 0.382 | R-2.2 | Commercial Chilled Water Lines |
| Kingflex NBR/PVC Elastomeric Foam | 19mm | 0.035 W/m·K | 0.543 | R-3.1 | Industrial Process Piping & Plant Rooms |
| Kingflex NBR/PVC Elastomeric Foam | 25mm | 0.035 W/m·K | 0.714 | R-4.1 | Outdoor Heat Pump (ASHP) Headers |
| Kingflex NBR/PVC Elastomeric Foam | 32mm | 0.036 W/m·K | 0.889 | R-5.1 | Cryogenic System Secondary Insulation |
| Kingflex NBR/PVC Elastomeric Foam | 50mm | 0.038 W/m·K | 1.316 | R-7.5 | District Heating & Main Plant Headers |
| Kingflex Glass Wool Board | 50mm | 0.032 W/m·K | 1.563 | R-8.9 | Acoustic Panel & Roof Insulation |
| Kingflex Rock Wool Board | 50mm | 0.035 W/m·K | 1.428 | R-8.1 | High-Temperature Industrial Boiler Flues |
How China's high-capacity manufacturing centers support the decarbonization of European infrastructure.
Kingflex Insulation operates five fully automated, continuous extrusion assembly lines with an annual capacity exceeding 600,000 cubic meters. This scale ensures stable prices and supply continuity, insulated from localized regional shortages in the UK and Western Europe.
Modern commercial infrastructure demands specialty materials. Under our Dienes brand, Kingflex supplies cryogenic-grade elastomeric systems capable of operating at temperatures down to -200°C, vital for LNG bunkering, petrochemical processing, and bio-pharmaceutical storage.
Entering the UK market requires compliance with British Standards. Kingflex thermal insulation products undergo testing for BS 476 Part 6 & Part 7 (Class 0 rating), CE mark designation, REACH chemical registry compliance, and RoHS certifications.
Adapting Chinese manufacturing advantages to solve specific UK construction challenges.
In major developments across London, Birmingham, and Manchester, commercial HVAC installations face tight spatial restrictions. Kingflex closed-cell NBR/PVC elastomeric rubber foam sheets provide high R-values at reduced thicknesses compared to traditional mineral fiber options, saving ceiling void space while maintaining complete condensation control.
With the UK transitioning away from fossil-fuel heating, large-scale air-source and ground-source heat pumps require highly efficient, weatherproof pipe insulation. Kingflex self-adhesive sheets and thermal pipes offer low thermal conductivity ($\leq 0.034$ W/m·K at 0°C) to prevent thermal losses along extensive outdoor transport lines.
Under Building Regulations Document E (Resistance to the Passage of Sound), commercial and residential developments require structural noise attenuation. Our open-cell rubber foam insulation (10mm thick) offers a high sound absorption coefficient, ideal for lining ductwork and plant room doors.
Driving next-generation insulation chemistry and engineering capabilities.
Optimizing NBR/PVC polymer structures to increase cross-linking density, achieving flexible performance at cryogenic levels down to -200°C without crack propagation or thermal fatigue.
In response to emerging UK/EU chemical regulations, Kingflex is researching halogen-free flame retardants that meet UL94 V-0 ratings while emitting minimal non-corrosive smoke during fire events.
Integrating micro-sensors and moisture-detection filaments into closed-cell rubber matrices, allowing property managers to monitor condensation and heat loss in real-time via IoT protocols.
More than 40 years of engineering, manufacturing, and global trading expertise.
Kingflex Insulation Co., Ltd. is a leading professional manufacturer and exporter of energy-saving thermal, cold, and acoustic insulation products. Established in Dacheng, China—historically recognized as the capital of green building materials—our operations are integrated across R&D, mass production, localized installation guidance, and global post-sale service.
Our parent company, the Jinwei Group (established in 1979), has a legacy spanning more than 40 years. Jinwei Group was the first manufacturer of thermal insulation materials located north of the Yangtze River, paving the way for China's modern insulation export industry.
Today, Kingflex relies on a dedicated workforce of 230 production personnel, a dedicated international client services team, and 8 senior research and development engineers who continuously optimize material densities and fire safety thresholds to align with international regulatory frameworks.
Every batch of Kingflex elastomeric foam and fiber glass wool is coded for traceability. Raw materials are checked upon arrival, and density profiles are continuously scanned during automated extrusion.
Demonstrated success across complex building systems and industrial piping networks.
Highly flexible, large-format insulation rolls designed for quick installation on massive air handling units (AHUs), rectangular air ducts, and flat storage tanks.
Slit and unslit elastomeric tubes engineered to wrap snugly around copper, steel, and plastic pipes to prevent condensation and freeze cracking.
Transparent international partnerships backed by documented compliance reports.
Maintaining high E-E-A-T credentials means demonstrating real relationships with international specifiers. Below are verified quality checks and shipping schedules exchanged between Kingflex regional coordinators and procurement engineers based in Europe and North America.
Expert technical answers regarding compliance, material behavior, and international procurement.
Select from our certified thermal and acoustic insulation catalog for project quotes.
