Explore our foundational range of high-density elastomeric rubber foam pipes and sheets optimized for global industrial applications.
The modern HVAC, district heating, and fire safety systems demand exact visual coding coupled with superior thermal resistance. Kingflex 32mm Red Ducting (elastomeric NBR/PVC rubber foam) is engineered specifically to meet these demanding parameters. Formulated with a highly controlled blowing agent mixture, this product offers an even, fine micro-cellular structure with over 98% closed cells.
By blending Nitrile Butadiene Rubber (NBR) with Polyvinyl Chloride (PVC), we achieve a highly flexible elastomeric profile that resists mechanical wear while providing a built-in water vapor barrier. The distinctive red outer pigmentation serves not only as a structural line indicator (commonly indicating heating supply lines or fire-prevention conduits) but is also treated with UV-stabilizers to prevent color fading and polymer degradation in semi-exposed setups.
Every batch of our 32mm Red Ducting undergoes rigorous standardized testing to verify thermal and physical metrics.
| Property Parameter | Reference Value (NBR/PVC Standard) | Test Methods & Certification Compliance |
|---|---|---|
| Nominal Inner Diameter (ID) | 32 mm (Custom sizes matching standard plumbing & HVAC tubes) | ISO 3126 Verification Protocols |
| Wall Thickness Availability | 6mm to 50mm based on custom thermal envelope targets | Standard Micrometer Profiling |
| Thermal Conductivity (λ) | ≤ 0.034 W/(m·K) at 0°C, ≤ 0.038 W/(m·K) at 40°C | ASTM C518 / ISO 8497 Compliant |
| Water Vapor Diffusion Factor (μ) | ≥ 10,000 (Prevents internal humidity saturation) | EN 12086 / ASTM E96 |
| Service Operating Temperature | -40°C to +105°C continuous rating | Tested according to DIN EN 14707 standards |
| Fire Classification & Safety | Class 1 / Class 0 Fire Retardant, Self-Extinguishing | BS 476 Part 7 / UL94 V-0 / ASTM E84 |
| Density Profile | 40 - 55 kg/m³ for high elastic memory | GB/T 6343 Density Verification |
The completely closed-cell matrix prevents moisture migration. Unlike porous fibrous glass or rock wool, it does not require additional vapor barrier jackets to prevent atmospheric moisture saturation.
Chemically modified with advanced halogen-free flame retardants, meaning it will self-extinguish when removed from source heat. Highly localized smoke generation limits ensure maximum public safety.
By keeping pipes dry, it prevents Galvanic or Under-Insulation Corrosion (CUI) on copper or carbon steel lines, extending system lifespans by up to 15 years.
How global infrastructure and civil engineering design groups deploy 32mm Red Ducting across diverse environments.
In highly developed eco-buildings throughout Europe (e.g., Germany, Scandinavia), our 32mm Red Ducting wraps solar collector feed-lines and underfloor boiler lines. The red hue ensures immediate visual identification of high-temperature conduits, preventing maintenance team errors while securing energy efficiency under EN 12828 parameters.
In municipal buildings and hotels across the Middle East and East Asia, 32mm red colored piping is specified for emergency wiring and fire sprinkler control systems. The high flame-resistant rating (BS 476 Class 0 compliant) ensures structural integrity during escape periods.
Variable Refrigerant Flow (VRF) technology in high-rise commercial structures relies heavily on visual thermal coding. Using Red for liquid/hot gas bypass piping and Blue for cold gas lines simplifies the commissioning phase and significantly cuts down diagnosing times during maintenance checks.
At Kingflex Insulation, our R&D team (led by 8 professional insulation engineers) is continuously researching the next paradigm of polymer thermal structures. Our engineering roadmaps focus on three core areas:
Operating from Dacheng, China—the globally recognized capital of green-building materials—Kingflex Insulation Co., Ltd. combines advanced manufacturing technology with efficient logistical placement. With over 40 years of engineering legacy under the Jinwei Group (founded in 1979), we understand B2B supply chain continuity.
Our facility houses 5 large-scale automated continuous vulcanization assembly lines, yielding an annual capacity exceeding 600,000 cubic meters. This allows us to fulfill large orders for projects like high-capacity infrastructure developments while maintaining competitive pricing.
Delivering high-performance insulation systems to over 66 countries globally.
Operating a construction or industrial project in localized jurisdictions requires strict adherence to regional regulatory frameworks. Our products are fully certified to international benchmarks, helping clients secure building approvals and insurance sign-offs:
We provide localized engineering support, offering on-site insulation parameter calculations, structural drawings, installation supervision, and comprehensive post-sale thermal performance validation.
Get professional answers to technical queries, installation procedures, and shipping terms.
Elastomeric rubber foam is a flexible, closed-cell insulation material primarily used for HVAC ducts, air conditioning piping, commercial heating systems, industrial process pipelines, cold storage lines, and acoustic barriers to control condensation and minimize heat transfer.
Yes, our rubber foam products are formulated with flame-retardant additives. They meet Class 1 and Class 0 ratings under BS 476 and international classifications, making them suitable for commercial structures with strict fire safety requirements.
Rubber foam is closed-cell and flexible, providing high resistance to water vapor and making it excellent for cold lines and condensation control without a separate jacket. Rock wool is a high-temperature fibrous material suitable for heavy industrial high-heat piping, but it requires a vapor barrier in damp environments.
Yes, we offer comprehensive OEM and ODM support. We can customize dimensions (such as nominal 32mm ID, customized wall thicknesses from 6mm to 50mm), surface coatings, color coding (including bright red, blue, and black configurations), and print custom project brands on the insulation tubing.
Our products have passed BS 476, CE, REACH, RoHS, UL94, and ASTM certifications. This ensures compliance with structural material standards, safety guidelines, and environmental requirements globally.
Yes. Every production run is marked with batch identifiers, enabling full traceability from raw material raw NBR/PVC powder suppliers down to the individual box delivered to your construction site.
We produce insulation sheet rolls in thicknesses ranging from 6mm to 50mm, allowing for tailored thermal and acoustic solutions across diverse structural applications.
Under standard operating conditions within the temperature limits of -40°C to +105°C and with correct installation, the expected service life is 10 to 15 years.
Choose from our specialized color-coded piping, flexible insulation rolls, and systems engineered for low-temperature environments.
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