Kingflex
Kingflex Insulation Co., Ltd. represents the pinnacle of professional research, development, and manufacturing combination for high-end thermal insulation products. Headquartered in Dacheng, China—historically celebrated as the capital of green building materials—our operations focus heavily on sustainable, energy-saving, and environmentally friendly solutions.
In our decades of operation, Kingflex has prioritized ecological integrity, building-energy efficiency, and reliable performance across severe environments. We do not just sell materials; we deliver custom thermal engineering consultations, advanced raw material formulation, high-precision manufacturing, site installation guidance, and global post-sale service tracking.
Established by Jinwei Group
Countries Exported To
Annual Output Capacity
In large-scale building construction and industrial insulation design, calculating the cost per square foot (per sq ft) involves much more than comparing raw factory invoice values. To obtain the true lifetime thermal performance and optimal return on investment, engineering procurement managers must calculate the **Total Cost of Ownership (TCO)**, which covers raw material grade, R-value per unit of thickness, transport volume, and installation speed.
China is the global leader in elastomeric rubber foam production, offering unprecedented cost advantages. However, the price quotes range based on density fluctuations, fire safety certifications, and low-temperature flexibility specifications. Below, we break down the critical cost drivers to help you analyze international procurement options:
The ratio of premium Nitrile Butadiene Rubber (NBR) to Polyvinyl Chloride (PVC) determines chemical resistance, aging resistance, and elasticity. Higher NBR content yields superior elasticity but influences the per sq ft pricing.
A density range of 40–55 kg/m³ ensures mechanical resilience and high structural integrity. Cheaper foams suffer from uneven cell distribution, leading to thermal bridging and moisture penetration over time.
Meeting rigorous international standards like BS 476 (Class 0/1), ASTM E84, or UL 94 V-0 requires specialized flame-retardant additives, which affects the base quote per sq ft.
Elastomeric sheet rolls with pre-applied self-adhesive backings and high flexibility significantly reduce labor hours. The initial cost increase is balanced by massive on-site installation savings.
| Insulation Type | Avg. Thermal Conductivity (W/m·K) | Water Vapor Permeability (μ-factor) | Typical Application Fields | Relative Cost Factor (Per Sq Ft) |
|---|---|---|---|---|
| NBR/PVC Elastomeric Foam | ≤ 0.034 (at 0 °C) | ≥ 10,000 | HVAC, Chilled Water Systems, Low-Temp Pipes | Moderate - High ROI |
| Rock Wool | ≤ 0.040 (at 25 °C) | 1 (Requires Vapor Barrier) | High-Temp Steam Pipes, Industrial Furnaces | Low - Moderate |
| Glass Wool | ≤ 0.036 (at 25 °C) | 1 (Requires Vapor Barrier) | Commercial Duct Wraps, Residential Attics | Low |
| Flexible Cryogenic Foam | ≤ 0.031 (at -165 °C) | ≥ 20,000 | LNG Processing, Sub-Zero Marine Systems | High (Specialized) |
Kingflex was established under the umbrella of the Jinwei Group, which boasts a rich history spanning more than 40 years. Founded in **1979**, Jinwei Group was the first manufacturer of thermal insulation materials north of the Yangtze River. This deep heritage gives Kingflex an unmatched database of thermal performance variables and formulation experiences.
At present, Kingflex runs 5 large automatic assembly lines, generating an annual production capacity of over 600,000 cubic meters. Our production capability and rigorous testing have earned us the status of a designated supplier for the Chinese Ministry of Energy, the Ministry of Electric Power, and the Ministry of Chemical Industry.
Our team consists of over 230 dedicated factory technicians and 8 specialized R&D material engineers who continuously refine the formulations to ensure consistent thermal protection and anti-condensation characteristics.
Our thermal insulation systems are deployed across various commercial, residential, and industrial environments worldwide. Because they feature a fully closed-cell structure, they perform exceptionally in humid, low-temperature, and corrosive conditions.
Prevents outer-surface condensation on large air ducting systems, refrigeration pipelines, and domestic water pipes. Reduces total HVAC energy consumption by maintaining constant fluid temperatures.
Formulated specifically for ultra-low temperature and sub-zero process piping (such as LNG processing, sub-zero coolant loops, and cold-chain infrastructure) to prevent moisture ingress and mechanical damage.
Utilizes open-cell structured soundproof insulation boards inside mechanical rooms, heavy machinery enclosures, and ductwork to absorb noise and dampen low-frequency vibrations.
Provides corrosion-resistant protection for hot or cold piping systems. Defends the metal surface underneath from Corrosion Under Insulation (CUI) through its high moisture vapor barrier.
The fundamental parameter of elastomeric insulation is its **closed-cell structure**. The micro-cells act as tiny chambers trapping air, which effectively hinders convective heat transfer. Standard Kingflex rubber foam displays a closed-cell rate exceeding **98%**, restricting water molecules from penetrating the cellular network.
In our research and development labs, we test the thermal conductivity under different temperature profiles (from -40°C to 105°C). By optimizing the plasticizing and blowing agent sequence, our engineers have successfully formulated foams with high flexibility even under cryogenic temperatures (-196°C).
Moreover, our environmental initiative works toward replacing conventional chemical blowing agents with advanced eco-foaming technology. This ensures the output materials are entirely **halogen-free, CFC-free**, and possess zero Ozone Depletion Potential (ODP).
Our foam incorporates flame-retardant compound systems that produce a dense char layer upon fire exposure. This reaction extinguishes flame propagation instantly, preventing toxic gas and liquid drip generation.
The high water resistance factor ($\mu \ge 10,000$) functions as an integrated vapor barrier. Unlike traditional glass wool which demands secondary foil wrap layers, Kingflex foam needs no external vapor protection.
Featuring a compression resilience rate over **80%**, our sheets and pipes absorb mechanical shocks without cellular ruptures, making them ideal for heavy vibration environments like high-speed rail transits.
To ensure complete reliability, our manufacturing process undergoes regular audits. Our materials hold internationally recognized certificates to assure global developers of absolute structural safety.
We operate with 100% transparency. Our quality control system assigns batch trace tracking IDs to every roll or pipe, so developers can inspect original test sheets corresponding to their direct shipment.
Material: NBR/PVC Blend
Thickness Range: 6mm to 50mm
Density: 40 to 55 kg/m³
Service Temperature: -40℃ to 105℃
Material: NBR/PVC Blend
Thickness Range: 9mm to 40mm
Inner Diameter (ID): 6mm to 114mm
Service Temperature: -40℃ to 105℃
Our automated storage system manages shipping schedules, keeping standard sheet and pipe dimensions ready for immediate container dispatch.
