Engineered to secure thermal stability, minimize energy dissipation, and eliminate the risk of Corrosion Under Insulation (CUI) on stainless steel piping systems.
Stainless steel pipelines, celebrated for their mechanical durability and high corrosion resistance, possess a critical vulnerability: Chloride-Induced Stress Corrosion Cracking (CISCC) and Corrosion Under Insulation (CUI). When moisture infiltrates typical fiber-based insulation systems, soluble chlorides are leached onto the pipe's exterior, leading to localized pitting and catastrophic stress fractures over time.
As a leading Chinese manufacturer of insulation materials for stainless steel pipes, Kingflex addresses this issue at a molecular level. Our closed-cell elastomeric rubber foam possesses an exceptionally low chloride and halogen footprint, conforming strictly to the ASTM C692 corrosion evaluation criteria. By combining a water vapor diffusion resistance factor of μ ≥ 10,000 with a built-in protective barrier, our insulation completely isolates the metallic profile from external atmospheric oxidizers and ambient moisture.
Furthermore, our formulation prevents liquid water accumulation, which is the primary catalyst for galvanic corrosion. Whether deploying in extreme industrial refineries, pharmaceutical cleanrooms, or high-humidity HVAC environments, utilizing NBR/PVC-based closed-cell elastomeric products ensures long-term operational safety and minimizes unplanned downtime.
Established by the Jinwei Group, which boasts a rich lineage dating back to 1979, Kingflex has grown to become the premier pioneer of high-performance thermal insulation products north of the Yangtze River. Backed by over 40 years of continuous growth, we operate from Dacheng, China—the undisputed capital of green-building materials.
Our core philosophy centers on energy efficiency, consumption reduction, and technological stewardship. We offer full-cycle consulting, custom configuration, direct production, and installation guidance. As an integrated manufacturer, Kingflex supports global projects by delivering cost-effective systems that meet the rigorous standards of modern industry.
To ensure high standards across our product lines, our facility is equipped with eight R&D engineers, six specialized international trade directors, and 230 highly trained operators, bringing world-class engineering to the forefront of clean environmental insulation manufacturing.
High-quality NBR/PVC elastomeric formulations engineered for extreme applications. See the specifications below for our standard line of sheets and pipes.
| Parameters | Value |
|---|---|
| Material Structure | NBR/PVC Elastomeric Foam |
| Thickness Available | 6mm - 50mm |
| Apparent Density | 40 - 55 kg/m³ |
| Service Temperature | -40℃ to 105℃ |
| Closed Cell Ratio | ≥ 98% |
| Thermal Conductivity | ≤ 0.034 W/(m·k) at 0℃ |
| Moisture Resistance factor | μ ≥ 10,000 |
| Parameters | Value |
|---|---|
| Material Structure | NBR/PVC Elastomeric Foam |
| Thickness Available | 9mm - 40mm |
| Inner Diameter (ID) | 6mm - 114mm |
| Apparent Density | 40 - 55 kg/m³ |
| Service Temperature | -40℃ to 105℃ |
| Fire Performance | Class 1 / Class 0 (BS476), Self-extinguishing |
| Applications | Chilled Water, HVAC, Industrial Steam |
Explore our specialized solutions engineered for HVAC, mechanical plants, and high/low-temperature piping.
Modern engineering demands high precision and durability. Our NBR/PVC closed-cell insulation products are optimized for a range of critical industrial processes.
Petrochemical lines and chemical processing systems require stable temperatures to prevent phase separation. Our low thermal conductivity (λ ≤ 0.034 W/m·K) prevents unwanted heat gain, and the halogen-free construction protects stainless steel tubes from degradation in aggressive coastal or high-chemical environments.
In large buildings, condensation on chilled water pipes leads to water damage, structural deterioration, and mold growth. Our moisture-barrier structure (μ ≥ 10,000) prevents air drafts from contacting cold surfaces, eliminating sweating and reducing energy waste in air-conditioning systems.
Our specialized cryogenic formulations serve ultra-low-temperature piping systems (down to -40℃). The material maintains its flexibility and elasticity under extreme thermal contraction, resisting cracks and preserving thermal performance in specialized food, vaccine, and industrial gas storage applications.
At Kingflex, we operate under a strict quality management system to ensure consistency across all production batches. Every cubic meter of our elastomeric foam is tested for thermal stability, density distribution, and fire resistance. Our materials are officially designated for use by the Chinese Ministry of Energy, Ministry of Electric Power, and Ministry of Chemical Industry, validating their safety and performance.
Our products comply with several international fire safety and environmental regulations, including BS 476, CE, REACH, RoHS, UL 94, and ASTM standards. Additionally, our fully integrated manufacturing process ensures complete traceability, allowing us to track materials from raw inputs to final dispatch.
Our dedicated R&D department continues to develop new formulations designed for higher temperatures, lower smoke toxicity during combustion, and improved resistance to weathering, ensuring long-lasting performance in outdoor applications.
In line with global goals for green building development, the thermal insulation industry is moving toward halogen-free formulations. Conventional halogenated flame retardants can release toxic smoke during a fire. Kingflex is leading this transition by developing flexible halogen-free thermal insulation pipes and sheets.
Our research focuses on combining bio-based raw materials with elastomeric foams to reduce carbon footprints while maintaining high insulation performance. We are also testing aerogel-elastomer hybrid systems designed to offer low thermal conductivity in a thin profile, helping optimize space in dense pipeline installations.
Procuring raw materials from China requires consistent quality, clear communication, and reliable logistics. Kingflex supports global procurement managers with customized services, including tailored thicknesses, widths, densities, and adhesive backings designed for specific projects.
We work with international logistics providers to manage freight forwarding, export documentation, and customs clearance. Whether shipping under FOB, CIF, or DDP terms, our customer service team keeps you updated from production to delivery. We maintain a steady supply of raw materials to keep lead times predictable, even during periods of high demand.
Our insulation materials have been used in infrastructure projects globally. View our recent installations and client communications below.
Find expert answers to common questions about elastomeric rubber foam insulation and its applications on stainless steel piping systems.
It is mainly used for HVAC ducts, air conditioning pipes, building thermal insulation, industrial pipeline cold insulation, and sound insulation. Its flexible structure makes it ideal for wrapping complex pipe bends and fittings.
Yes, our rubber foam insulation products are flame retardant and meet safety standards for building and industrial projects. They comply with fire safety requirements, including BS 476 Class 0 and Class 1 standards, and are self-extinguishing.
Rubber foam is flexible, closed-cell, and moisture-proof, making it suitable for HVAC and chilled water systems to prevent condensation. Rock wool is highly temperature-resistant and fireproof, which makes it ideal for high-temperature industrial pipelines and fire barriers.
Yes, we offer OEM and ODM services. We can adjust the thickness, inner diameter, density, color, and adhesive backing to meet specific project specifications and regulatory requirements.
Our products have passed BS 476, CE, REACH, RoHS, UL94, ASTM, and other international certifications. This ensures compliance with quality, environmental, and safety standards in global markets.
Yes, all Kingflex products are fully traceable. We assign specific batch codes to our production runs, tracking raw material batches, production parameters, and testing records to ensure consistent quality control.
We produce sheet rolls in thicknesses ranging from 6mm to 50mm, allowing you to select the appropriate level of thermal protection for your application.
When installed correctly and maintained, our materials have a service life of 10 to 15 years in typical operating conditions, thanks to their closed-cell structure and moisture resistance.
Stainless steel can suffer from Stress Corrosion Cracking (SCC) when exposed to moisture and soluble chlorides. By choosing insulation with a low chloride content that meets ASTM C692 standards, you prevent these ions from reaching the pipe surface, reducing the risk of pipe failure.
Unlike open-cell materials that absorb moisture, closed-cell elastomeric foam (with a closed-cell rate > 98%) prevents liquid water and water vapor from migrating to the pipe surface. This eliminates the moisture required for electrochemical corrosion to take place.
Browse our selection of NBR-based elastomeric foams, halogen-free tubing, and low-temperature sheets.
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