Kingflex
Direct sourcing and custom specifications for international pipeline engineering demands.
Modern building services, petrochemical engineering, and industrial process pipelines require strict thermal management. Choosing the right flexible pipe lagging is critical to control condensation, prevent freeze damage, manage heat loss, and reduce acoustic transmission. Kingflex Insulation Co., Ltd. is a leading manufacturer specializing in closed-cell elastomeric NBR/PVC insulation. We supply advanced solutions for international engineering projects.
Our engineered elastomeric foam features an even, micro-cellular structure with a closed-cell rate exceeding 98%. This high density of closed cells creates a built-in vapor barrier that prevents moisture ingress, keeping thermal conductivity stable throughout the system's operational life.
By using custom NBR/PVC chemical formulations, we manufacture insulation materials that provide excellent thermal performance (working from -40℃ to 105℃) and comply with strict global fire safety regulations (such as BS 476, Class 0/Class 1, UL94, and ASTM E84 standards).
Pioneering environmental efficiency and large-scale industrial capability from China's green-building material capital.
Kingflex Insulation Co., Ltd. is an integrated manufacturing and trading corporation focused on thermal and acoustic insulation products. Our R&D and production facilities are based in Dacheng, China—a hub for green building materials. We prioritize energy efficiency and environmental sustainability.
From initial design consultation to custom R&D, manufacturing, and installation guidance, Kingflex provides end-to-end insulation systems for commercial building services, district heating and cooling, and industrial process piping.
Established by the Jinwei Group, Kingflex builds on more than 40 years of industry experience. Founded in 1979, the group was the first major manufacturer of thermal insulation materials north of the Yangtze River.
We operate as a designated supplier for key state authorities in China, including the Ministry of Energy, the Ministry of Electric Power, and the Ministry of Chemical Industry. This reflects our commitment to high manufacturing standards.
Engineered specifications of Kingflex Elastomeric NBR/PVC Rubber Foam insulation systems.
| Technical Parameter | Standard Value / Rating |
|---|---|
| Material Matrix | Nitrile Butadiene Rubber (NBR) & Polyvinyl Chloride (PVC) |
| Thickness Range | 6mm to 50mm |
| Apparent Density | 40 to 55 kg/m³ |
| Thermal Conductivity | ≤ 0.034 W/(m·k) at 0℃ |
| Moisture Resistance Factor (μ) | ≥ 10,000 (Closed-cell rate ≥ 98%) |
| Operational Temperatures | -40℃ to +105℃ |
| Flame Spread Index | Class 0 / Class 1 (BS 476 Part 6 & 7), ASTM E84 compliant |
| Technical Parameter | Standard Value / Rating |
|---|---|
| Material Matrix | Premium NBR/PVC Elastomeric Foam |
| Wall Thickness | 9mm to 40mm |
| Inside Diameter (ID) | 6mm to 114mm (Custom diameters available) |
| Compression Resilience | ≥ 80% recovery rate |
| Vapor Barrier | Self-forming, highly resistant skin structure |
| Weather/UV Resistance | Excellent (External coating recommended for outdoor use) |
| Environmental Safety | Halogen-Free, RoHS & REACH Compliant, Low smoke toxicity |
Providing tailored insulation systems for energy conservation, thermal control, and acoustics in global infrastructure.
Prevents condensation on chilled water pipes and air ducts, while reducing heat loss in hot water systems. Essential for energy-efficient commercial buildings, hospitals, and shopping centers.
Multi-layered elastomeric barrier systems protect LNG infrastructure, chemical transport lines, and ultra-low temperature research environments down to cryogenic ranges, minimizing thermal transfer.
Protects industrial process lines from thermal degradation, corrosion under insulation (CUI), and harsh chemical environments, ensuring reliable performance in manufacturing facilities.
Kingflex insulation products are certified to meet international building codes and fire safety standards. Our laboratory performs continuous testing to verify physical properties, ensuring reliable quality control for global projects.
This technical compliance makes Kingflex a reliable partner for engineers, specifiers, and procurement managers worldwide.
Working with global partners to develop advanced elastomeric polymer formulations.
Developing NBR/PVC blends to improve cell structure uniformity and thermal resistance.
Verifying insulation values across a range of operating temperatures and humidity levels.
Testing fire retardant additives to meet international safety codes.
Our team includes 8 professional R&D engineers, 6 international sales specialists, and 230 manufacturing workers. We work closely together to ensure consistent quality and reliable delivery.
We provide comprehensive project support, offering custom sizing, technical submittals, and installation guidance for complex pipeline installations globally.
Developing high-performance, halogen-free insulation systems to support green building initiatives.
Phasing out HCFCs and using advanced organic blowing agents to target zero Ozone Depletion Potential (ODP) and Global Warming Potential (GWP) below 5.
Providing halogen-free elastomeric insulation that minimizes acid gas emissions during fire exposure, protecting both people and sensitive equipment.
Developing pre-jacketed insulation tubes with aluminum foil or polymeric cladding to improve mechanical protection and weather resistance.
Serving industrial and commercial projects worldwide with reliable delivery and technical support.
Kingflex materials are used in HVAC systems, petrochemical plants, district cooling facilities, and low-temperature storage projects worldwide. We ensure product traceability from raw material to site delivery.
We work closely with global buyers and engineering groups, maintaining clear communication from technical review through to delivery.
Detailed technical answers for engineering professionals and procurement managers.
Elastomeric rubber foam insulation is used to control heat transfer, prevent condensation, and damp noise. Key applications include commercial HVAC systems, air conditioning piping, refrigeration lines, cold storage facilities, district energy networks, and acoustic damping in HVAC ducts.
Yes. Our formulation contains flame retardants that help it self-extinguish. It complies with building safety standards, including BS 476 (Class 0 and Class 1 ratings for surface spread of flame), UL94, and ASTM E84.
Rubber foam is a flexible, closed-cell material with high moisture resistance, making it suitable for HVAC, chilled water systems, and plumbing to prevent condensation. Rock wool has an open-fiber structure that withstands high temperatures, making it suitable for high-pressure steam pipes and industrial fire barriers.
Yes. We offer custom dimensions, thicknesses (from 6mm to 50mm), inside diameters (from 6mm to 114mm), colors, and packaging solutions. We also provide OEM branding for global distributors and project specifications.
Our products are certified to BS 476, CE, REACH, RoHS, UL94, and ASTM standards. Testing is performed by international certification bodies to ensure compliance with global environmental and safety regulations.
Yes. We maintain a quality management system that tracks batch numbers from raw materials through production, packaging, and final delivery, ensuring traceability for each shipment.
We manufacture insulation sheet rolls in thicknesses ranging from 6mm to 50mm, allowing for thermal configurations based on project requirements.
When properly installed according to engineering guidelines and protected from direct outdoor UV exposure (using protective coatings or jackets), Kingflex rubber foam insulation has an expected service life of 10 to 15 years.
Ensuring consistent quality through controlled manufacturing and testing.
Engineered insulation products for building and industrial piping projects.
