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Global Industrial Standards Compliance

Wholesale Class 0 Insulation Manufacturers & Suppliers

Premium Closed-Cell Elastomeric Nitrile Rubber Solutions Engineered for Extreme Fire Safety, Cryogenic Integrity, and HVAC Thermal Control

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Wholesale Class 0 Products - Fast Ship Series

Direct factory supply of certified elastomeric materials ensuring high-resistance fire barriers and exceptional vapor insulation properties.

Wholesale Kingflex aluminum foil thermal insulation tape

Wholesale Kingflex aluminum foil thermal insulation tape

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China NBR/PVC Rubber Foam Insulation For Cryogenic System

China NBR/PVC Rubber Foam Insulation For Cryogenic System

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China Kingflex insulation tube

China Kingflex flexible closed-cell elastomeric nitrile foamed tube

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China Kingflex Thermal Insulation Tubes

China Kingflex Thermal Insulation Closed-cell Tubes

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Wholesale Low temperature heat insulation synthetic rubber sheet

Wholesale Low temperature synthetic rubber sheet roll

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Wholesale Elastomeric Cryogenic Insulation Series

Wholesale Elastomeric Cryogenic Insulation Series Suppliers

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China Flexible Foam Rubber Insulation Pipe

China Flexible Foam Rubber Insulation Pipe

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Wholesale Kingflex open cell rubber foam soundproof insulation

Wholesale Kingflex open cell rubber soundproof insulation

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Understanding BS 476 Class 0 Standard

In mechanical spec writing and structural safety enforcement, the term Class 0 holds critical status. Under British Standard 476 (specifically Parts 6 and 7), Class 0 is not merely a single material classification but a combined fire safety standard. To achieve Class 0 status, an insulation material must demonstrate:

  • Part 7 Compliance (Class 1): Zero or minimal surface spread of flame across the material's surface.
  • Part 6 Compliance (Propagation Index): A fire propagation index (I) of less than 12, and a sub-index (i1) of less than 6.

For structural engineers and MEP consultants, utilizing true Class 0 certified closed-cell elastomeric rubber foam reduces flashover risks in high-occupancy zones and commercial air distribution systems, ensuring maximum protection for lives and structural assets.

Kingflex Class 0 Thermal Insulation Factory R&D Center
A Heritage of Thermal Excellence

About Kingflex Insulation Co., Ltd.

Combining scientific R&D, state-of-the-art manufacturing lines, and a robust global logistical framework to lead energy-saving building initiatives globally.

Kingflex Jinwei Group Factory History since 1979

Our Company & History

Kingflex Insulation Co., Ltd. is a professional manufacturing and trading combo for high-end thermal insulation products. Our R&D and main production facilities are located in Dacheng, China—historically recognized as the capital of green building materials. Strategically focusing on "energy saving and consumption reduction" as our core operating concept, we serve the international market with comprehensive solutions spanning engineering consultation, R&D custom fabrication, installation guidance, and dedicated post-sales support.

Kingflex was established by the prestigious Jinwei Group, which boasts a historical lineage dating back to 1979. As the first thermal insulation material manufacturer north of the Yangtze River, our group's 40+ year development path guarantees deep technical competence and reliable manufacturing continuity.

1979
Established Year
600K+
Annual Capacity (m³)
8
R&D Engineers
66+
Export Countries

The R&D and Manufacturing Team

Our team is a highly integrated collective of engineering talent and trade experts. In our R&D department, 8 professional engineers continuously experiment with polymer modifications to lower thermal conductivity and improve flame retardancy. Alongside them, 6 international sales experts ensure absolute compliance with regional customs and shipping requirements, while 230 trained production personnel maintain strict quality control in our workshops.

Our operational capabilities are backed by 5 large automatic assembly lines, enabling us to exceed an annual capacity of 600,000 cubic meters. Over the decades, Kingflex has achieved the distinction of being a designated production partner for the Ministry of Energy, the Ministry of Electric Power, and the Ministry of Chemical Industry in China.

Kingflex Engineering Team & R&D Laboratory Group
Data Sheet & Compliance

Technical Specifications: Black Rubber Foam Insulation

Detailed dimensional standards and mechanical properties for Kingflex NBR/PVC elastomeric rubber systems.

Property / Dimension Black Rubber Foam Sheet Roll Specification Black Rubber Foam Pipe Specification
Base Polymer Formulation NBR/PVC Elastomeric Foam Blend NBR/PVC Elastomeric Foam Blend
Standard Thickness Range 6mm - 50mm 9mm - 40mm
Inner Diameter (ID) N/A (Flat sheet form, roll packaging) 6mm - 114mm (Compatible with global pipe sizes)
Density Limits 40 - 55 kg/m³ 40 - 55 kg/m³
Operational Temp. Range -40℃ to 105℃ (Ultra-low option down to -196℃) -40℃ to 105℃ (Ultra-low option down to -196℃)
Closed Cell Structure >98% Closed-Cell Rate >98% Closed-Cell Rate
Fire Safety Rating Class 0 & Class 1 (BS 476, UL94 V-0) Class 0 & Class 1 (BS 476, UL94 V-0)
Water Vapor Resistance High Moisture Resistance Factor (μ ≥ 10,000) Evenly-sprayed coating prevents ambient vapor infiltration

Core Product Advantages

  • Uniform Micro-cell Structure: Foams evenly and fully with a closed-cell rate exceeding 98%, maximizing structural thermal resistivity.
  • Stable Thermal Conductivity: The locked micro-gas cells ensure stable, long-term low lambda (λ) values.
  • High Elastic Resilience: Compression resilience over 80% ensures easy fitting around bends and complex geometries.
  • Fire Safety Barrier: Flame retardant properties cause the foam to self-extinguish when removed from open flames.

Primary Application Scenarios

  • HVAC & Water Lines: Prevents condensation and freezing on chilled and hot water distribution pipes.
  • Industrial & Process: High efficiency insulation for heavy industrial storage tanks, chemical pipelines, and steam networks.
  • Commercial Infrastructure: Acoustic dampening and thermal efficiency for ventilating ducts in hospitals, hotels, and airports.
  • Transit & Cold Chain: Thermal insulation panels for railcars, refrigerated trucks, and industrial walk-in freezers.
Strategic Purchasing Insights

Why Global Enterprises Source from China & Kingflex

An analytical look at supply chain optimization, raw material integration, and high-volume procurement logistics.

The Chinese Supply Chain Advantage

Global procurement directors balance cost control, performance margins, and delivery speeds. Choosing a manufacturer located in China's prime green building materials cluster (Dacheng) provides clear structural advantages:

  • Integrated Raw Material Clusters: Proximity to major polymer and chemical suppliers reduces domestic freight overheads and stabilizes pricing.
  • High Production Volumes: Our automated continuous vulcanizing lines keep cycle times low and ensure batch-to-batch consistency.
  • Tested Export Protocols: 16 years of international trade history enables seamless customs clearances and reliable sea container dispatch.

Enterprise Sourcing Priorities

Our solutions target these key concerns for global procurement managers:

1. Strict Standards Compliance: All Kingflex shipments can be supplied with formal testing certificates confirming Class 0/Class 1 flame ratings, REACH environmental compliance, and low RoHS chemical content.

2. Supply Chain Security: Our large warehouse capacity and raw material reserves help mitigate sudden market fluctuations.

3. Comprehensive Customization: We offer tailored densities, custom inner diameters, and optional foil laminations to meet specific project needs.

Third-Party Verification

Global Fire Ratings & Compliance

Thermal materials used in high-density commercial construction and sensitive industrial plants must hold recognized compliance credentials. Kingflex Class 0 and Class 1 materials undergo regular testing in accredited laboratories to verify their properties under critical conditions.

  • BS 476 (Part 6 & 7): Core certification confirming Class 0 and Class 1 status for fire propagation and flame spread.
  • UL94 Certification: Verified V-0 flammability rating on elastomeric materials to ensure self-extinguishing behavior.
  • REACH & RoHS Compliance: Formulated without polybrominated diphenyl ethers (PBDEs) or toxic heavy metals.
  • ASTM & CE Standards: Compliance with thermal conductivity, moisture absorption, and dimensional stability limits for North American and European markets.
BS 476 Part 6 & Part 7 Test Report
BS 476 Class 0
FM Approved Thermal Insulation Certificate
FM Approval
CE Marking and DoP Standard Document
CE Standard
ISO 9001 Quality System Certificate
ISO 9001
Field Integration & Case Studies

Engineering Applications & Project Profiles

Real-world application of elastomeric closed-cell rubber systems in high-demand construction and industrial projects.

Project Integration Profile: Class 0 Rubber Foam Insulation

Kingflex insulation materials are used across commercial, industrial, and transportation sectors. The combination of flexible closed-cell structures and certified fire performance makes our products a reliable choice for challenging HVAC and piping installations.

1. HVAC Air Duct System

Installed as a vapor barrier and thermal blanket on large central air conditioning ducts to prevent condensation and improve energy conservation.

2. Chilled Water & Condensate Pipes

Provides thermal insulation on low-temperature piping networks in public facilities, reducing pipe corrosion risks.

3. Process Piping & Storage Tanks

Applied in chemical processing plants to insulate high-pressure steam pipelines, vessels, and storage systems.

4. Acoustic Control In Machinery Rooms

Open-cell and specialized compound rubber variations help absorb high-frequency noise from compressor stations and mechanical plant rooms.

HVAC Duct Insulation Worksite Chilled Water Line Pipeline Insulation
Acoustic Insulation Panel Installation
Large Diameter Industrial Pipe Wrapping
Project Portfolio Gallery

Global Project Installations Showcase

A selection of active construction sites, industrial facilities, and transport installations utilizing Kingflex elastomeric insulation materials.

Catalog Directory

Core Product Catalog & Technical Classifications

Detailed specifications for our primary elastomeric, soundproof, and rock wool insulation options.

Rubber elastomeric foam insulation tube

Rubber elastomeric foam insulation tube

Standard closed-cell NBR/PVC tube designed for HVAC water and refrigeration lines.

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Corrosion Resistant Rubber Foam Insulation Tube

Corrosion Resistant Rubber Foam Insulation Tube

Outer layer protected against UV, weather, and chemical exposure in industrial environments.

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Elastic Rubber Foam Insulation Pipe

Elastic Rubber Foam Insulation Pipe

Highly flexible formulation suitable for complex routing around piping bends and valves.

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Black Rubber Foam Insulation Pipe

Black Rubber Foam Insulation Pipe

Standard mechanical closed-cell tubing with high density walls for condensation control.

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Foam Rubber Foam Insulation Tube

Foam Rubber Foam Insulation Tube

Standard NBR base material providing chemical stability and resistance to oil and moisture.

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HVAC Rubber Foam Insulation Tube

HVAC Rubber Foam Insulation Tube

Optimized wall thickness profile for building service piping and local split unit systems.

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Elastomeric rubber foam insulation system for cryogenic applications

Elastomeric rubber foam insulation system

Designed for ultra-low temperatures, LNG transport pipelines, and industrial cryogenic facilities.

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Kingflex flexible insulation material for cryogenic services

Kingflex flexible insulation cryogenic material

Formulated to resist low-temperature embrittlement down to -196℃.

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Cryogenic rubber foam for low temperature and hydrocarbon process

Cryogenic rubber foam for low temp systems

Suitable for industrial gas networks, ethylene lines, and chemical processing facilities.

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Elastomeric cryogenic insulation for low temperature pipeline systems

Elastomeric cryogenic insulation

Multi-layered thermal system designed for industrial gas processing and transport.

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Rock Wool Insulation Board

Rock Wool Insulation Board

High-density basalt fibers for structural fire insulation and high-temperature systems.

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rock wool thermal insulation blanket

Rock wool thermal insulation blanket

Flexible mineral wool wrap for large process ducts, kilns, and plant pipe networks.

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Verified Partner Interactions

Client Communication & Quality Feedback

We work closely with global engineering firms, mechanical contractors, and distributors to ensure our materials meet strict project specifications.

Our sales and technical support teams provide direct updates on lead times, laboratory certifications, and custom dimension capabilities to maintain clear project alignment.

"Kingflex's Class 0 closed-cell rubber sheet met the project requirements for our commercial HVAC installation. The density was consistent, and the batch certification documents were complete."

— Lead MEP Estimator, Commercial Construction, Singapore

Frequently Asked Questions

Technical FAQ: Class 0 & Elastomeric Rubber Foam

Detailed explanations addressing common structural, chemical, and logistics questions about elastomeric insulation.

Q1: What is elastomeric rubber foam insulation used for?
It is mainly used for HVAC air ducts, refrigeration piping systems, building envelope insulation, industrial chemical process pipeline cold/heat preservation, and specialized machine room soundproofing.
Q2: Is Kingflex rubber foam insulation fire resistant?
Yes, our rubber foam insulation products are flame retardant. The Class 0 series complies with BS 476 Part 6 & Part 7, meeting global safety standards for commercial high-rise buildings and industrial plant installations.
Q3: What is the difference between rubber foam and rock wool insulation?
Rubber foam is a flexible, closed-cell material with high moisture resistance (μ-factor), making it suitable for cold lines, condensation control, and HVAC systems. Rock wool is a high-density, high-temperature resistant mineral fiber suitable for hot pipes, process steam systems, and fire stop walls.
Q4: Do you provide customized insulation products?
Yes, we offer custom manufacturing services (OEM/ODM). We can modify parameters such as wall thicknesses, inner diameters (ID), outer protective coatings, density levels, and apply pressure-sensitive self-adhesive backings.
Q5: What certifications do your products have?
Our products hold certifications for BS 476 Part 6 & Part 7, CE marking, REACH environmental compliance, RoHS chemical screening, UL94 flammability ratings, and ASTM technical standard evaluations.
Q6: Does Kingflex products have traceability?
Yes, all production batches at Kingflex are marked with reference codes, allowing tracking from raw material intake through to the final shipping container details.
Q7: What thickness of Rubber foam insulation sheet roll can you produce?
We produce elastomeric rubber sheets in thicknesses ranging from 6mm to 50mm, available in standard widths and custom-cut rolls.
Q8: What is the typical service life of rubber plastic pipe and board?
Under standard operating temperatures and when properly installed indoors, our elastomeric materials have an expected service life of 10 to 15 years.
High-Value Catalog

Wholesale Class 0 Products - Heavy Duty & Cryogenic Series

Direct factory supply of heavy duty and ultra-low temperature cryogenic elastomeric rubber products.

Wholesale Cryogenic insulation system for Ultra Low Temperature project

Wholesale Cryogenic insulation for Ultra Low Temperature projects

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Wholesale Kingflex rubber foam product

Wholesale Kingflex rubber foam products & accessories

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China Kingflex Class 0 Class 1 high-end rubber foam insulation

China Kingflex Class 0 Class 1 high-end rubber foam

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China Heat Insulation Rubber Foam Sheet

China Heat Insulation Rubber Foam Sheet Manufacturers

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Wholesale Kingflex Low Density Rubber Foam Sheet

Wholesale Kingflex Low Density Rubber Foam Sheet

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China Kingflex closed cell rubber foam insulation tubes

China Kingflex closed cell rubber foam insulation tubes

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China Kingflex open cell flexible soundproof insulation sheet

China Kingflex open cell soundproof insulation sheet

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Wholesale Rubber Insulation For Cryogenic Pipeline

Wholesale Rubber Insulation For Cryogenic Pipeline

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Verified Production Batches

High-Definition QC Inspections Gallery

A visual record of quality control steps, automated production stages, and outgoing product configurations.