Premium NBR/PVC closed-cell sheets engineered to meet rigorous thermal limits and mechanical stress in marine climates.
Features dynamic adhesion lining, eliminating thermal leakage points and reducing localized install times in humid settings.
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Designed to tolerate severe cold profiles down to cryogenic limits without loss of cell resilience or micro-cracking.
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Engineered multi-layer composition optimized for long-term piping installation aboard container transport and port facilities.
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Flexible configuration preventing ice formation and pipe corrosion underneath insulation in subzero process industries.
View SpecsAs Vietnam’s principal northern seaport and third-largest city, Hai Phong is undergoing an unprecedented industrial transition. Designated industrial zones such as the Deep C Industrial Zones, VSIP Hai Phong, and Trang Due Industrial Park host major automotive manufacturing complexes (such as VinFast at Cat Hai), advanced consumer electronics plants, and extensive cold-chain logistics centers supporting Lach Huyen Deep Sea Port.
These large-scale industrial operations rely heavily on centralized HVAC networks, steam lines, chilling plants, and ship cargo operations. Due to the proximity of the Gulf of Tonkin, the local climate is characterized by exceptionally high relative humidity (averaging over 85% annually) and corrosive coastal atmospheres containing marine salt aerosols. Standard open-cell insulation materials fail quickly here, leading to condensation, energy loss, and CUI (Corrosion Under Insulation).
Using NBR/PVC Elastomeric Rubber Foam Insulation Sheet Rolls provides a robust technical response to these challenges. The closed-cell profile prevents moisture ingress, ensuring stable thermal performance and preventing structural degradation across the service life of the project.
Kingflex production lines with a capacity of 600,000+ cubic meters annually.
In high-humidity marine markets like Hai Phong, thermal insulation faces challenges from ambient moisture. Standard open-cell insulation risks absorbing moisture via capillary action. Because water has a high thermal conductivity ($k \approx 0.6 \text{ W/m·K}$), even a small volume of moisture absorption can significantly reduce the insulation performance of the material.
| Insulation Attribute | NBR/PVC Elastomeric Rubber Foam (Kingflex) | Standard Mineral/Rock Wool |
|---|---|---|
| Cell Structure | Closed-Cell Structure (>98% cell density) | Open fibrous web layout |
| Moisture Ingress Risk | Extremely Low (High moisture resistance factor $\mu \ge 10,000$) | High (Demands external vapor barrier jackets) |
| Thermal Stability in 90% RH | Maintains stable insulation performance | Thermal efficiency degrades as fibers absorb water |
| CUI Risk | Protects steel pipes from moisture access | Moisture can accumulate on pipe surface, increasing CUI risk |
| Installation Flexibility | Highly flexible, wraps easily around small pipes and elbows | Semi-rigid/rigid, prone to gaps at joints |
Kingflex rubber foam insulation sheet rolls maintain low thermal conductivity ($0.032 - 0.035 \text{ W/m·K}$ at $0^\circ\text{C}$). This physical profile minimizes heat gain in chilled water lines, reduces energy loss in factory air ducts, and prevents condensation cycles that disrupt electronics production and warehousing floors.
A look at Kingflex Insulation Co., Ltd.'s journey from the first north-of-Yangtze manufacturing site to global projects.
Established by the Jinwei Group, which dates back to 1979, Kingflex is backed by over 40 years of history. We built early thermal insulation production lines in Dacheng, China, laying a foundation for thermal systems development.
Our team includes 8 R&D engineers, 6 international sales consultants, and 230 manufacturing staff. This setup supports reliable quality control and smooth cross-border logistics.
We test every production run for physical properties like fire classification, cell density, smoke emission density, and thermal conductivity before shipping to overseas projects.
Detailed deployment scenarios for Kingflex rubber foam insulation sheet rolls in local industrial zones.
Electronics manufacturers require cleanroom environments with stable temperatures, controlled humidity, and low airborne contamination. Kingflex closed-cell insulation rolls release fewer particulates and maintain low VOC emissions during operation.
By preventing condensation on ceiling supply ducts, our insulation helps prevent mold growth, protecting cleanroom equipment and yielding predictable performance in high-humidity climates.
Lach Huyen Deep Sea Port handles high volumes of reefer container shipments and seafood exports. Cold storage facilities require reliable insulation to prevent ice buildup on evaporator pipes and structural supports.
Our cryogenic-rated elastomeric sheets insulate sub-zero pipes and refrigerant lines against heat transfer from the tropical air. This helps reduce refrigeration cycle runtime and stabilize storage temperatures.
Petrochemical plants, heavy machinery assembly, and industrial manufacturing facilities rely on large utility pipeline networks to deliver steam, chilled water, and compressed air.
Kingflex rubber foam insulation withstands ambient temperature fluctuations and mechanical vibrations. The NBR/PVC composition provides resistance to petrochemical splashes, atmospheric salt spray, and physical wear on pipe and valve fittings.
Automotive paint shops require precise temperature and humidity control in air handling units to ensure uniform coatings. Kingflex insulation rolls maintain air temperature within supply ducts.
The flame-retardant formulation of our insulation meets Class 0 ratings under BS 476, helping maintain fire safety compliance for large-scale production facilities.
A look at our field installations, product testing, and client service logs.
Our standard insulation sheet rolls are produced with advanced continuous foaming systems to ensure uniform density and cell size.
For piping systems, Kingflex produces matching elastomeric pipe sleeves that slide onto lines or can be split and sealed with adhesive.





How our Dacheng manufacturing site delivers optimized logistics for Northern Vietnam buyers.
Our production facilities in Dacheng, Langfang, are located near Tianjin Port. This proximity allows for direct sea transport routes to Lach Huyen Deep Water Port and Dinh Vu Port in Hai Phong.
Continuous foaming machinery controls density variation across the roll width, reducing installation waste compared to manual batch foaming processes.
Direct shipping from our factory to your project site bypasses middleman markups, helping manage material costs for industrial projects in Vietnam.
Kingflex insulation products are certified to international standards, ensuring compliance for foreign-invested enterprises (FIEs) in Vietnam.
For projects involving international design firms, engineering standards require compliance certifications. Our NBR/PVC elastomeric foam rolls and pipe systems are audited under international fire and quality protocols.
| Compliance Body | Standard Code | Testing Attribute |
|---|---|---|
| BS 476 Part 6 & 7 | Class 0 / Class 1 | Fire propagation and surface spread of flame |
| Underwriters Laboratories | UL94 V-0 Rated | Self-extinguishing foam properties |
| ASTM E84 | 25/50 Flame & Smoke | Flame Spread & Smoke Developed Indices |
| RoHS & REACH | Certified Compliant | Free of halogenated compounds and heavy metals |
| CE Standard | EN 14304 | Factory thermal insulation product declaration |
Our international testing records are traceable to verify batch specifications.
Our quality checks monitor roll thickness and foam consistency before dispatching shipments to Hai Phong Port.












We supply specialized high-temperature and cryogenic materials for multi-phase construction designs.
Provides structural fireproofing and high-temperature thermal control for hot utility lines.
Designed for high-vibration engine housing, boilers, and utility pipelines.
Maintains thermal protection at cryogenic temperatures for LNG storage applications.
Closed-cell formulation that remains flexible under extreme thermal stress.
Technical information regarding elastomeric foam applications, certifications, and project installation in humid coastal areas.
Contact our R&D engineers to discuss thermal conductivity parameters, adhesive backings, or bulk pricing for the Hai Phong market.
Send Inquiry NowExplore our range of elastomeric sheet rolls, standard pipes, and specialized insulation layers.
Standard closed-cell elastomeric roll designed for duct wrapping and large surface thermal control.
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Offers mechanical strength and impact resistance for exposed industrial piping.
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Blended formulation designed for oil and weather resistance in outdoor marine environments.
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Designed for air conditioning systems, providing sound dampening and thermal protection.
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Standard closed-cell sheets suitable for insulating commercial air ducting.
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Nitrile-based foam with fine cell structure for consistent thermal resistance.
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Fitted with a pressure-sensitive adhesive layer to simplify on-site installation.
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Colored outer layers to identify hot, cold, or service lines in industrial plants.
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