Kingflex
Deploy high-performance elastomeric and cryogenic solutions optimized for strict thermal management across global supply lines.
High mechanical strength closed-cell nitrile rubber engineered specifically for complex building services and industrial pipeline isolation systems.
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Exceptional performance at deep sub-zero ranges, engineered to prevent condensation in liquid natural gas and petrochemical operations.
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Top tier thermal barrier formulation providing excellent resistance to water vapor transmission and optimal energy efficiency indexes.
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High performance pipe insulation displaying exceptional acoustic damping and mechanical longevity under severe climatic conditions.
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Consistent cell structure distribution ensuring unified thermal conductivity across all industrial structural profiles.
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Color-coded insulation sheeting options for visible pipeline classification, meeting complex architectural scheme designs.
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Multi-layered cryogenic structural system built to address extreme temperature gradients with high chemical protection.
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Guaranteed low thermal conductivity coefficients, optimizing system performance across commercial and residential HVAC projects.
Check Inventory StatusThermal and cold insulation design is no longer a minor consideration in engineering projects; it is a critical component of environmental control, energy economics, and facility safety. Industrial developments in petrochemistry, LNG shipping, and regional HVAC cooling networks require advanced dimensional planning. Standardized insulation size charts provide architects and structural mechanical engineers with the specifications needed to prevent physical clashes, optimize spacing in dense piping configurations, and ensure correct wall thickness ratios.
By employing precise size planning, projects can minimize heat flux, eliminate water condensation risks, and control thermal expansion stresses. Properly calculated insulation sizes allow commercial, cryogenic, and high-temperature systems to maintain continuous process temperatures, protecting sensitive lines and improving overall energy efficiency.
Comprehensive dimension guide for black rubber foam insulation sheets and pipe tubes.
Material Structure: High-performance Nitrile Butadiene Rubber / Polyvinyl Chloride (NBR/PVC) blend
Thickness Range: 6mm to 50mm
Density: 40 - 55 kg/m³
Service Temperature: -40℃ to +105℃
Performance: Uniform cell structure, high moisture resistance, self-extinguishing flame retardancy.
Material Structure: Closed-cell elastomeric NBR/PVC matrix
Thickness Options: 9mm to 40mm
Inner Diameter (ID): 6mm to 114mm
Density: 40 - 55 kg/m³
Applications: Process piping, HVAC systems, and thermal line management.
Closed Cell Rate: Over 98% for excellent moisture barrier properties
Compression Resilience: Over 80% recovery after mechanical loading
Thermal Conductivity: Extremely low coefficients to maintain thermal isolation
Frost Protection: Drastically reduces freeze-thaw risks in cold fluid systems
Accurate insulation sizing is vital in preventing condensation on cold water services and chilled HVAC lines. If the inner diameter (ID) of the elastomeric tube does not match the outer diameter of the copper or steel pipe, air pockets can form. Moisture can condense in these air pockets, accelerating corrosion under insulation (CUI) and reducing the system's thermal efficiency.
Kingflex manufactures pipe insulation profiles ranging from 6mm to 114mm ID, designed to fit tightly over global piping profiles. This close fit minimizes convective heat transfer and ensures long-term performance across demanding commercial and industrial projects.
Innovative material science, smart insulation architectures, and environmental milestones for 2025 and beyond.
Modern insulation formulations are transitioning away from halogenated fire retardants toward halogen-free, non-toxic elastomeric matrices. Next-generation NBR/PVC polymers utilize advanced mineral-based synergists to achieve high fire safety ratings while significantly reducing smoke toxicity in critical public structures.
Our environmental roadmap prioritizes chemical blowing technologies with zero Ozone Depletion Potential (ODP) and Global Warming Potential (GWP) of less than 1. This ensures that the cell structures of our elastomeric products are expanded in a sustainable, eco-friendly manner.
By blending elastomeric polymer structures with high-porosity silica aerogels, future products will offer lower thermal conductivity values at reduced thicknesses. This allows for space-saving insulation designs in compact industrial layouts.
Kingflex operates modern production facilities located in Dacheng, China, a central hub for green building materials. Operating with a focus on resource conservation and efficiency, Kingflex integrates research, development, and high-volume production under strict quality management structures.
With 5 fully automated continuous extrusion assembly lines, our plant achieves a production capacity exceeding 600,000 cubic meters annually. This capacity allows Kingflex to supply large-scale infrastructure projects while maintaining consistent quality standards.
By managing the manufacturing process from raw material blending to final curing, we optimize production costs, control product consistency, and reduce supply chain lead times for our global partners.
Through strategic planning, we maintain raw material reserves and operate multiple transport channels to protect project timelines from disruptions. Kingflex provides end-to-end support—from technical selection to site installation guidance—ensuring reliable delivery for projects worldwide.
Exporting to over 66 countries requires compliance with various national testing regimes, environmental regulations, and building codes. Kingflex products are engineered, tested, and certified to meet key global regulatory standards:




Important steps for mechanical engineering procurement teams seeking wholesale quotes and volume shipments.
Consult our standardized size charts to match inner diameter (ID) and wall thickness dimensions to the thermal properties required for your specific piping systems.
For custom dimensions, thickness ranges, or specific colors, coordinate with our technical department to evaluate feasibility and configure production tooling.
We coordinate container packing, customs clearance, and delivery schedules to ensure high-volume products arrive at the project site according to schedule.
Continuous investment in testing facilities to maintain product quality and performance standards.



Standard manufacturing parameters for Black Rubber Foam Sheet Rolls and Insulation Pipes.
| Property | Specification Detail |
|---|---|
| Base Polymer | NBR/PVC (Nitrile Butadiene Rubber / Polyvinyl Chloride) |
| Standard Thickness | 6mm, 9mm, 13mm, 16mm, 19mm, 25mm, 32mm, 40mm, 50mm |
| Nominal Density | 40 - 55 kg/m³ |
| Service Temperature Limit | -40℃ to +105℃ |
| Thermal Conductivity Coefficient | ≤ 0.034 W/(m·k) at 0℃ |
| Property | Specification Detail |
|---|---|
| Base Polymer | NBR/PVC Elastomeric Foam |
| Wall Thickness Range | 9mm, 13mm, 19mm, 25mm, 32mm, 40mm |
| Inner Diameter (ID) | 6mm to 114mm (Nominal pipe sizes) |
| Density Range | 40 - 55 kg/m³ |
| Moisture Resistance Factor | µ ≥ 10,000 (Vapor barrier integrated) |
Kingflex Insulation Co., Ltd. is a manufacturer and distributor of thermal insulation products. Our R&D and manufacturing divisions are located in Dacheng, China, a center for green building materials development.
Established as part of the Jinwei Group, which has over 40 years of manufacturing history since its founding in 1979, Kingflex built its experience by developing early thermal insulation materials north of the Yangtze River.
Today, Kingflex focuses on developing, manufacturing, and exporting energy-saving insulation systems, serving construction and industrial projects worldwide.
Documented customer interactions and factory delivery clearances that confirm product quality standards.






Insulation installations in commercial facilities, energy plants, and regional cooling networks.








Standard manufacturing controls, quality inspection steps, and packaging lines at the Dacheng plant.












A comprehensive list of products designed for various temperature requirements and mechanical stress conditions.

Standard thermal insulation tube with high vapor resistance, designed for HVAC installations.

Formulated with protective additives to reduce the risk of under-insulation corrosion on steel and copper lines.

Highly flexible elastomeric piping designed for installations requiring tight bends and routing.

Industrial-grade closed-cell thermal pipe insulation with stable heat transfer resistance.

Designed for vibration dampening and thermal efficiency in industrial process piping.

Engineered for temperature control and condensation prevention on air handling unit piping.

A specialized design optimized for ultra-low temperature and cold storage piping systems.

Maintains flexibility and prevents thermal transfer in sub-zero processes, including LNG distribution.

Engineered to withstand temperature cycles ranging from sub-zero conditions to standard system operations.

A multi-layered barrier system designed to minimize heat leak risks in liquid gas transfer lines.

High-density mineral fiber board designed for applications requiring high-temperature limits and structural fire containment.

Flexible mineral fiber wrapping designed for high-temperature exhaust stacks and industrial furnace ducts.
Packaging configurations for sheet rolls, pipe bundles, and accessory components before export dispatch.












Technical explanations and performance standards for elastomeric, cryogenic, and high-temperature insulation.
Select from our range of elastomeric and cryogenic products designed for thermal efficiency and line protection.
Designed to maintain thermal barrier performance across wide temperature cycles in processing systems.
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Closed-cell elastomeric tubing designed to limit thermal transfer and control energy loss in commercial lines.
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Standard elastomeric thermal boards and tubes designed for commercial construction and distribution.
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Engineered open-cell elastomeric structures designed to provide acoustic damping and sound absorption.
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Industrial-grade piping insulation designed for processing networks and plant thermal systems.
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Available in multiple colors to support line identification and design requirements in visible installations.
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Engineered for cold temperature stability in LNG processing and cryogenic transfer systems.
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Provides low thermal conductivity for systems operating at ultra-low temperatures.
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