Kingflex
The global thermal insulation landscape is undergoing a paradigm shift driven by stringent energy efficiency regulations and carbon neutrality mandates. Elastomeric rubber foam insulation sheet rolls and pipes have emerged as the primary choice for modern mechanical insulation systems. As infrastructure projects demand long-term structural integrity and thermal optimization, the market is shifting from open-cell structures to fully closed-cell nitrile butadiene rubber / polyvinyl chloride (NBR/PVC) technologies.
In critical industrial installations, prevention of Moisture Vapor Transmission (MVT) is vital. Traditional insulation materials often suffer from structural thermal bridging and degradation caused by moisture infiltration, which leads to Corrosion Under Insulation (CUI). Our NBR/PVC closed-cell matrix offers a built-in vapor barrier, resolving these issues and securing high performance throughout a service life exceeding 15 years.
Kingflex Insulation Co., Ltd. represents the absolute pinnacle of high-tech insulation manufacturing in China. With decades of group-backed experience, we provide turn-key global engineering solutions.
Established by the prestigious Jinwei Group, which boasts a rich history spanning over 40 years since its inception in 1979, Kingflex stands as the premier pioneer of high-performance thermal insulation products north of the Yangtze River.
Operating 5 fully automated advanced assembly lines, Kingflex yields an annual output exceeding 600,000 cubic meters. We are a designated production enterprise certified by the Ministry of Energy, Ministry of Electric Power, and Ministry of Chemical Industry in China.
Our high-end NBR/PVC elastomeric formulations are certified to the absolute highest standards, satisfying international testing regimes including BS 476, CE, REACH, ROHS, UL94, and ASTM.
Located inside the national Capital of Green Building Materials in Dacheng, China, Kingflex operates as a fully integrated research, manufacturing, and distribution framework. We leverage energy-saving technologies to provide systemic consultancy, custom material synthesis, layout engineering guidance, and dedicated post-sale technical supervision.
Our engineered rubber foam sheets and rolls consist of a premium composite matrix of Acrylonitrile Butadiene Rubber (NBR) and Polyvinyl Chloride (PVC). This chemical structure is cross-linked and foamed via precision automated gas injection to achieve high density, uniform cell structures, and outstanding mechanical resilience.
| Mechanical Characteristic | Standard Reference Parameter | Value / Performance Threshold |
|---|---|---|
| Material Formulation | Nitrile Butadiene Rubber / Polyvinyl Chloride (NBR/PVC) | Industrial Grade Premium Hybrid |
| Density Profile | ASTM D1622 / EN 826 | 40 - 55 kg/m³ |
| Thermal Conductivity (λ) | ASTM C177 / EN 12667 | ≤ 0.034 W/m·K at 0°C |
| Water Vapor Permeability (μ) | ASTM E96 / EN 12086 | ≥ 10,000 (Built-in Vapor Barrier) |
| Operational Temperature Range | EN 14706 / EN 14707 | -40°C to +105°C |
| Fire Safety Classification | BS 476 Part 6 & 7 / UL 94 | Class 0 / Class 1 / V-0 Rated Self-Extinguishing |
| Elastic Compression Resilience | ASTM D1056 | ≥ 80% recovery rate |
Kingflex maintains a dedicated in-house research laboratory focused on polymers, thermodynamics, and acoustic analysis. Our specialized engineering group comprises 8 professional chemical and mechanical R&D engineers, supported by a workforce of 230 specialists.
Our developmental roadmap targets key parameters: optimizing mechanical flexibility in sub-zero environments, expanding chemical and UV resistance for outdoor systems, and enhancing flame retardancy while reducing smoke toxicity.
Our systems are engineered to perform in the demanding thermal conditions of high-density infrastructure, industrial plants, and maritime engineering.
In modern commercial buildings, hospitals, and transit hubs, HVAC system optimization is essential. Kingflex rubber sheet rolls prevent condensation on air conditioning pipelines, chilled water lines, and ventilation ducts. This limits heat gains/losses and prevents moisture damage in false ceilings.
For LNG, petrochemicals, and low-temperature process lines, we provide specialized cryogenic insulation systems. These systems maintain thermal control down to ultra-low operational parameters, preventing cracking and structural failure under intense thermal stress.
Our open-cell structures are engineered for high sound absorption coefficient performance. When integrated with machinery enclosures, ventilation channels, and mechanical rooms, they provide dual-action thermal insulation and noise attenuation.
Environmental conditions vary widely across global markets. Kingflex designs customized solutions to meet these distinct regional needs:
Designed for high temperature and high humidity conditions, these solutions feature high surface emissivity and an elevated water vapor resistance factor (μ ≥ 10,000). They prevent surface condensation and mold growth without requiring external vapor wraps.
Formulated to retain flexibility at temperatures down to -40°C, preventing structural cracking, mechanical breakdown, and material degradation.
Our fiber-free, dust-free formulation maintains high Indoor Air Quality (IAQ). It prevents microbial contamination, making it ideal for pharmaceutical facilities and microelectronics cleanrooms.
Kingflex maintains compliance with global standards, ensuring safety, reliability, and traceibility in major construction and industrial projects.
Our insulation materials are installed in major projects worldwide, from high-rise commercial centers to complex petrochemical processing facilities.
















Explore our specialized product solutions, manufactured to meet demanding industrial specifications.
Our focus on product quality and client support has established Kingflex as a trusted partner for international engineering firms and procurement teams.