Kingflex
Engineered to deliver high thermal resistance, low vapor transmission, and excellent fire safety ratings.
In modern industrial and commercial construction, the demand for Fibre-Free insulation materials has intensified due to evolving health, safety, and environmental (HSE) standards. Unlike traditional mineral wool, rock wool, or ceramic fiber products, which can shed microscopic particulates causing respiratory hazards and dermal irritation, fibre-free solutions utilize closed-cell elastomeric structures. This eliminates the risk of airborne fiber release, making them the standard choice for cleanrooms, healthcare facilities, food processing plants, and high-performance HVAC systems.
Globally, strict energy conservation directives, such as the EU's Energy Performance of Buildings Directive (EPBD) and ASHRAE 90.1 in the United States, are driving industries to seek materials that combine low thermal conductivity with absolute long-term durability. The transition to closed-cell NBR/PVC elastomeric foam represents a technology leap, offering reliable thermal barriers operating from cryogenic levels (-200°C) up to elevated process temperatures (+105°C and above with modified formulations).
As a global hub for green building materials, Dacheng, China, hosts advanced production facilities that leverage vertical integration and massive economies of scale. Kingflex Insulation Co., Ltd. operates in this ecosystem, boasting 5 fully automated, continuous extrusion assembly lines with an annual capacity exceeding 600,000 cubic meters.
This automated capacity yields substantial advantages for global buyers:
A premier manufacturer with over four decades of thermal engineering heritage.
Established by the Jinwei Group, which has a legacy spanning more than 40 years since its founding in 1979. Kingflex (formerly known under the group) was the pioneer manufacturer of thermal insulation materials north of the Yangtze River, leading structural shifts in China's green insulation industry.
Our operation is sustained by a tight-knit, talented group focused on first-class service. The workforce consists of 8 dedicated R&D engineers, 6 international sales consultants, and 230 specialized production technicians who maintain quality metrics across our lines.
Operating 5 large-scale automated assembly lines, Kingflex achieves an annual output of over 600,000 cubic meters. We are a designated production enterprise certified by the Ministry of Energy, the Ministry of Electric Power, and the Ministry of Chemical Industry of China.
Kingflex operates on the principle of continuous testing and validation. Our dedicated R&D center is equipped to test for thermal conductivity variations, smoke generation toxicity, and flame-retardant performance under simulated critical conditions.
Our certificates guarantee access to regulated international markets. Key compliances include:
Optimized systems designed for high-performance building infrastructure and extreme industrial environments.
Designed for large surface areas such as HVAC rectangular ducts, mechanical equipment casings, large-diameter water supply lines, and industrial process tanks.
| Parameters | Value / Description |
|---|---|
| Material Composition | Premium NBR/PVC blend (Halogen-free & fibre-free variant available) |
| Thickness Range | 6mm - 50mm |
| Density Range | 40 - 55 kg/m³ |
| Service Temp Limit | -40°C to 105°C |
| Water Vapor Permeability | Closed-cell barrier with high μ-factor (≥ 10,000) |
Pre-extruded insulation tubes tailored for copper, steel, and plastic HVAC pipelines, solar water systems, and industrial chemical pipelines.
| Parameters | Value / Description |
|---|---|
| Material Base | Highly elastic closed-cell synthetic rubber (NBR/PVC) |
| Internal Diameter (ID) | 6mm - 114mm (1/4" to 4" and above) |
| Wall Thickness Range | 9mm - 40mm |
| Anti-condensation Efficiency | Pre-applied moisture barriers prevent surface sweating |
| Flexibility Class | Superb compression resilience (> 80% recovery) |
Our solutions have been tested in real-world large-scale commercial structures, cryogenic processing hubs, and HVAC retrofits across sixty-six nations.
Large-scale construction contractors, petrochemical companies, and HVAC distribution firms look beyond purchase prices when evaluating supply chains. Procurement compliance involves strict criteria:
By using Kingflex elastomeric foam, engineering teams secure high-performing materials that comply with international mechanical, plumbing, and thermal specifications, streamlining project handovers and ensuring system longevity.
Kingflex maintains open and transparent communication channels with international partners, as evidenced by our positive customer feedback and project delivery logs:
Get professional answers regarding the performance metrics, differences, and installation guidelines of elastomeric rubber foam materials.
Elastomeric rubber foam is a synthetic rubber-based closed-cell insulation designed to prevent condensation, minimize thermal loss, and attenuate acoustics. It is widely used in commercial HVAC ducting, cold/hot water system piping, refrigeration lines, cryogenic ULT systems, and marine, industrial, or process piping networks.
Yes, our rubber foam products are formulated with flame-retardant additives. They achieve high fire ratings, satisfying standards such as BS 476 (Class 0 and Class 1), UL 94, and other international building safety certifications, ensuring slow flame spread and minimal smoke toxicity.
Rubber foam is a flexible, closed-cell, fibre-free structure that naturally resists moisture absorption without an external vapor barrier. It is ideal for HVAC, refrigeration, and cleanrooms. Rock wool is a fibrous mineral-based material that provides superior fireproofing at extreme high temperatures, but it is open-celled and requires a vapor barrier to prevent moisture accumulation and subsequent thermal degradation.
Yes. Kingflex supports comprehensive OEM services. We can customize sheet roll thickness, tube internal diameters (ID), density, colors, and configure self-adhesive backings or protective foil coatings to suit specific project needs.
Our materials are tested and certified globally, complying with BS 476, CE, REACH, RoHS, UL94, and ASTM. This ensures compliance with regional environmental and building codes across Europe, the Americas, Asia-Pacific, and the Middle East.
Yes. Quality control is maintained through a batch-coding system, enabling complete traceability of raw material inputs, processing parameters, and testing logs for all shipped products.
We produce elastomeric insulation sheets in thicknesses ranging from 6mm to 50mm. Thicker specifications can also be engineered or layered to achieve higher thermal resistance (R-values).
When installed correctly, our rubber-plastic pipe and board systems have a design life of 10 to 15 years in typical indoor and outdoor environments (outdoor installations require protective UV paints or metal jacketing).
A window into our manufacturing lines, depicting automated mixing, foaming, and shipping processes.
Highly customized materials developed for cold-chain, ultra-low temperature, and mechanical system acoustics.
In addition to our flagship elastomeric rubber foam lines, Kingflex manufactures high-quality rock wool solutions to fulfill diverse construction and thermal specifications.
Engineered for high-temperature process plants, industrial partition firewalls, and deep curtain wall assemblies requiring structural rigidity and high thermal resistance.
Flexible rock wool wrap blankets designed to accommodate curved vessel walls, large furnaces, exhaust ducts, and high-temperature steam supply lines.
