Kingflex
Kingflex
High-Density Thermal & Acoustic Elastomeric Products Specially Adapted for Mediterranean Environments
Optimized roll size for industrial air ducts and variable air volume systems in Catalonia projects.
Pre-formed elastomeric profiles ideal for copper, iron, and plastic heating and cooling pipes.
Dual-purpose structural foam sheet providing supreme acoustic decoupling and thermal envelope stability.
Robust flexibility designed for large-diameter process cooling conduits in petrochemical applications.
In accordance with the Spanish Código Técnico de la Edificación (CTE) and the European Directive on Energy Performance of Buildings (EPBD), Catalonia's modern commercial and industrial developments face strict regulatory pressures to optimize thermal efficiency and reduce direct carbon emissions. Barcelona, situated in climate zone B3, is subjected to hot, humid Mediterranean summers and mild winters, making condensation mitigation and moisture management key challenges for HVAC plant operations.
Elastomeric Rubber Foam (NBR/PVC-based cellular polymers) has emerged as the definitive technical standard for mechanical insulation. Unlike open-fibered materials such as glass or stone wool, which require complex external vapor barriers that are susceptible to damage, Kingflex's closed-cell rubber structure integrates an intrinsic water vapor transmission resistance (μ-factor ≥ 10,000). This permanently prevents cold pipe condensation, preserving thermal conductivity over decades of active service.
Our modern processing plant utilizing German-standard machinery to control uniform cell density.
Ensuring technical compatibility with localized HVAC practices in northeastern Spain
Every commercial development in Barcelona must satisfy RITE (Reglamento de Instalaciones Térmicas en los Edificios) specifications. Our closed-cell rubber pipes are manufactured in thicknesses up to 50mm, aligning with specified limit tables to prevent heat loss and surface condensation in environments exceeding 85% relative humidity.
Designed for cold-storage facilities near the Port of Barcelona and Zona Franca logistics hub. Our specialized low-temperature formulations withstand thermal stress down to -200°C without crack propagation, ensuring long-term insulation security for LNG infrastructure and nitrogen piping loops.
In highly sensitive indoor environments such as hospitals and schools in Catalonia, dust and allergen levels must be carefully managed. Kingflex elastomeric materials feature a dust-free formulation that inherently resists microbial colonization, satisfying severe cleanroom guidelines.
Our historical manufacturing hub which spearheaded early thermal performance technologies.
Established as a strategic division of the Jinwei Group, which brings over 40 years of engineering history to the insulation sector, Kingflex stands as an energy-saving, environmentally responsible pioneer. Originally established in 1979, Jinwei Group was the first developer and manufacturer of thermal insulation materials north of the Yangtze River, defining standards for structural efficiency across the continent.
Today, our specialized production processes integrate thermal insulation, cold preservation, and acoustic dampening. By delivering solutions that include active material consultation, automated production, localized delivery structures, and post-sale technical supervision, we provide end-to-end reliability for contractors across Spain and Southern Europe.
The core of Kingflex’s engineering dominance is our human capital. Our facility is run by eight specialized polymer research engineers, six professional international trade consultants, and over 230 qualified plant workers. Together, they maintain strict quality control standards, ensuring every cubic meter of elastomeric foam meets global building requirements.
We currently operate 5 large-scale fully automated continuous vulcanization assembly lines, generating an annual manufacturing capacity exceeding 600,000 cubic meters. These accomplishments have earned us designations as an approved energy-saving insulation supplier by national ministries of energy, electric power, and chemical processing.
Our dedicated international customer support and technical engineering team.
Strict laboratory controls confirming fire safety, thermal resistance, and material elasticity
Our dedicated laboratory constantly evaluates critical performance indicators: density ranges (40-55 kg/m³), fire resistance properties, thermal conductivity down to freezing temperatures, and compression resilience (achieving over 80% recovery). This empirical verification protects system performance from failures caused by temperature fluctuations or high humidity.
Globally recognized certifications confirming material quality, compliance, and environmental safety
BS 476 Class 0 / Class 1
CE (EN 14304) Compliance
ISO 9001:2015 Certification
UL 94 V-0 Safety Standard
All Kingflex elastomeric NBR/PVC thermal and acoustic insulation materials are fully tested and certified for fire propagation, smoke generation, thermal resistance, and chemical compliance, meeting REACH and RoHS requirements for projects in Barcelona.
Request Certificate Copies & Technical Test ReportsUnderstanding the performance differences for HVAC, sanitary hot water, and cold-chilled lines
| Performance Metric | Elastomeric Closed-Cell Foam (NBR/PVC) | Traditional Rock/Mineral Wool | Direct Value to Barcelona Projects |
|---|---|---|---|
| Thermal Conductivity (0°C) | λ ≤ 0.034 W/(m·K) | λ ≤ 0.040 W/(m·K) | Reduces energy loss in mechanical cooling and heating lines. |
| Water Vapor Resistance (μ) | μ ≥ 10,000 (Built-in Vapor Barrier) | μ ≈ 1 (Requires external foil) | Prevents cold line condensation in humid maritime climates. |
| Acoustic Performance | Excellent vibration decoupling; dampens structure-borne sound. | Excellent airborne sound absorption. | Ensures quiet HVAC operation in dense residential zones. |
| Dust & Fiber Hazard | Fiber-free, dust-free formulation. Safe for indoor air. | Can shed fibers; requires protective wraps. | Meets health and safety standards for schools and medical clinics. |
| Service Life Cycle | 10 to 15 years with consistent insulation performance. | High performance until moisture penetrates the wrap. | Minimizes mechanical system maintenance and replacement costs. |
Industrial performance under demanding commercial conditions
Designed for large ventilation ducts, air handling units (AHU), and cleanroom systems. Provides a clean exterior appearance, requires no painting, and limits heat loss and acoustics in main air plenums.
Slit-or-seamless tubular piping designed for split systems, central chillers, and hot water lines. The flexible formulation easily fits around bends, joints, and valves, reducing installation times by up to 40%.
We work directly with mechanical engineering firms, cold storage specialists, and HVAC distributors throughout the EU. These clients require consistent density, reliable wall thicknesses, and strict conformance to international fire codes.
Our commitment to transparency and service is reflected in our communication practices. We provide real-time updates from the production floor, detailed loading lists, and complete material traceability logs for every container leaving our factory.
Standard Material: NBR/PVC Copolymer Rubber Foam
Thickness Range: 6mm - 50mm
Density Limits: 40 - 55 kg/m³
Operating Temperature Range: -40°C to +105°C (Up to +125°C for localized industrial applications)
Material Formulation: NBR/PVC Polymer Foam
Wall Thicknesses: 9mm - 40mm
Inner Diameters (ID): 6mm - 114mm
Thermal Conductivity: ≤ 0.034 W/(m·K) at 0°C
Select your required dimensions, thicknesses, and technical formulations
Engineered materials designed for sub-zero gas transport and high-temperature systems
Clear, direct technical answers regarding applications, standards, and logistics
Our engineering team provides comprehensive support, including thickness calculations, compliance checks under RITE regulations, and logistics management for delivery to Spain.
