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Kingflex Group factory overview — elastomeric foam insulation manufacturer established 1979
🏭 Est. 1979 · Jinwei Group
Our History

45+ Years of Insulation Innovation

Kingflex is established by Jinwei Group which has more than 45 years of history. Kingway Group was established in 1979 and was the first manufacturer of thermal insulation materials north of the Yangtze River. From a pioneering regional producer, Kingflex has grown into a globally recognized brand, supplying comprehensive energy-saving insulation system solutions to customers across six continents.

1979
Founded as first thermal insulation manufacturer north of the Yangtze River
2000s
Expanded into international markets; began exporting to 66+ countries
2010s
Commissioned 5 fully automatic assembly lines; capacity exceeded 600K m³/year
Today
Serving 88+ countries; designated enterprise by Ministry of Energy & Chemical Industry
Production Capacity

World-Class Manufacturing Power

At present, Kingflex has 5 large automatic assembly lines, with an annual production capacity of more than 600,000 cubic meters, and has become a designated production enterprise designated by the Ministry of Energy, the Ministry of Electric Power and the Ministry of Chemical Industry.

🏗️
5
Automatic Assembly Lines
Fully automated production ensures consistent quality, dimensional accuracy and high throughput for every order.
📦
600K+
m³ Annual Production
Massive output capacity enables us to fulfill large-scale project orders and meet tight delivery schedules worldwide.
🏛️
3
Ministry Designations
Officially designated by China's Ministry of Energy, Ministry of Electric Power, and Ministry of Chemical Industry.
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Our Products

Complete Range of Insulation Solutions

Kingflex thermal insulation products are widely used in construction, petroleum, chemical, national defense, aerospace and other industries. Exported to more than 88 countries worldwide over the past 16+ years.

Rubber elastomeric foam insulation tube for HVAC and chilled water pipes

Rubber Elastomeric Foam Insulation Tube

High-performance closed-cell NBR/PVC pipe insulation for HVAC and chilled water systems.

Corrosion resistant rubber foam insulation tube for chemical pipelines

Corrosion Resistant Rubber Foam Insulation Tube

Enhanced chemical resistance for petrochemical and industrial process pipelines.

Elastic rubber foam insulation pipe with flexible installation

Elastic Rubber Foam Insulation Pipe

Superior flexibility for complex routing in tight mechanical spaces and building services.

Black rubber foam insulation pipe standard NBR PVC material

Black Rubber Foam Insulation Pipe

Standard NBR/PVC black pipe insulation — the industry workhorse for HVAC applications.

Foam rubber insulation tube for building thermal and acoustic insulation

Foam Rubber Foam Insulation Tube

Lightweight yet effective thermal and acoustic insulation for building services pipework.

HVAC rubber foam insulation tube for air conditioning duct systems

HVAC Rubber Foam Insulation Tube

Specifically engineered for air conditioning duct and pipe insulation in commercial buildings.

Elastomeric rubber foam insulation system for underground pipes

Elastomeric Foam Insulation System for Underground Pipes

Moisture-proof closed-cell system designed for buried pipeline thermal protection.

Kingflex flexible insulation material for cryogenic low temperature applications

Flexible Insulation for Cryogenic Applications

Rated to -40°C for LNG, refrigeration and cryogenic pipeline cold insulation.

Cryogenic rubber foam for low temperature and high humidity environments

Cryogenic Rubber Foam — Low Temperature

High vapor resistance for cold storage, cold chain and low-temperature industrial systems.

Elastomeric cryogenic insulation for low temperature pipe systems

Elastomeric Cryogenic Insulation

Engineered for extreme cold environments where condensation control is critical.

Rock wool insulation board for high temperature industrial applications

Rock Wool Insulation Board

High-temperature resistant and fireproof mineral wool board for industrial pipeline and equipment insulation.

Rock wool thermal insulation blanket for industrial pipe wrapping

Rock Wool Thermal Insulation Blanket

Flexible mineral wool blanket for wrapping irregular-shaped equipment and high-temperature pipes.

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Featured Product

Black Rubber Foam Insulation Sheet Roll

Black rubber foam insulation sheet roll product front view Black rubber foam insulation sheet roll cross-section detail Rubber foam insulation sheet installation on building wall Kingflex rubber foam sheet roll packaging and dimensions

Kingflex Standard Dimension

Material: NBR/PVC
Thickness: 6mm–50mm
Density: 40–55 kg/m³
Service Temperature Range: -40°C to 105°C

Advantage

1. Foams evenly and fully, closed cell rate over 98%, excellent thermal insulation.
2. Full closed-cell structure, low moisture absorption, stable long-term thermal conductivity.
3. Compression resilience over 80%.
4. Flame retardant, self-extinguishing off fire.
5. Low thermal conductivity, high moisture resistance factor.

Application

1. Central air conditioning: Heat insulation for air ducts and pipes
2. Buildings: Wall, roof and basement thermal & sound insulation
3. HVAC & water supply: Anti-condensation and anti-freezing for pipes
4. Industrial plants: Insulation for equipment, steam pipes and storage tanks
5. Hotels, malls & hospitals: Insulation and noise reduction for ventilation ducts and machine rooms
6. Rail transit & cold storage: Thermal insulation for carriages and cold rooms
7. Chemical industry: Heat insulation, sound insulation and corrosion protection for process pipes
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Featured Product

Black Rubber Foam Insulation Pipe

Kingflex Standard Dimension

Material: NBR/PVC
Thickness: 9mm–40mm
ID: 6mm–114mm
Density: 40–55 kg/m³
Service Temperature Range: -40°C to 105°C

Advantage

1. Foams evenly and fully, closed cell rate over 98%, excellent thermal insulation.
2. Professional pipe spraying equipment ensures even coating.
3. Compression resilience over 80%.
4. Flame retardant, self-extinguishing off fire.
5. Low thermal conductivity, high moisture resistance factor.
6. Greatly reduce pipe freezing and cracking risks.

Application

1. Central air conditioning chilled/hot water pipes and condensate pipes
2. Building HVAC & water supply pipes: antifreeze and anti-condensation
3. Ventilation and equipment room pipes for hotels, malls and hospitals
4. Thermal & cold insulation for industrial steam and process pipes
5. Cold insulation for cold storage and cold chain pipelines
6. Insulation, sound and corrosion protection for chemical & petrochemical pipes
7. Thermal insulation for solar and hot water system pipelines
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Black rubber foam insulation pipe standard NBR PVC product Rubber foam pipe insulation cross-section showing closed cell structure Kingflex rubber foam pipe insulation installation on HVAC system Rubber foam pipe insulation size range 6mm to 114mm ID
Industry Applications

Engineered for Every Industry

Kingflex insulation products serve diverse sectors — from commercial HVAC to deep industrial processes — delivering reliable thermal performance, condensation control and fire safety.

❄️

HVAC & Air Conditioning

Heat insulation for central air conditioning ducts, chilled water pipes, condensate pipes and fan coil units in commercial and residential buildings.

🏗️

Building & Construction

Wall, roof and basement thermal & sound insulation. Anti-condensation and anti-freezing protection for water supply and drainage pipes.

⚗️

Chemical & Petrochemical

Heat insulation, sound insulation and corrosion protection for process pipes, storage tanks and industrial equipment in chemical plants.

🏭

Industrial Plants

Comprehensive insulation for steam pipes, process equipment and storage vessels. Designated supplier to Ministry of Energy and Ministry of Electric Power.

🚂

Rail Transit & Cold Storage

Thermal insulation for rail carriages, cold rooms and cold chain logistics pipelines requiring consistent temperature control.

🏥

Hospitality & Healthcare

Insulation and noise reduction for ventilation ducts and machine rooms in hotels, shopping malls, hospitals and public facilities.

Project Cases

Real-World Project Gallery

From large-scale industrial facilities to commercial building HVAC systems, Kingflex insulation solutions have been successfully installed in projects across 88+ countries.

Kingflex rubber foam insulation installed on industrial pipeline project
Industrial Pipeline
Kingflex HVAC insulation project in commercial building
Commercial HVAC
Kingflex insulation applied to building wall and roof system
Building Envelope
Kingflex cold insulation for cold storage facility pipeline
Cold Storage
Kingflex insulation for petrochemical plant process pipes
Petrochemical Plant
Kingflex HVAC duct insulation in hotel ventilation system
Hotel HVAC
Kingflex rubber foam insulation on chilled water pipe system
Chilled Water System
Kingflex insulation for industrial steam pipe thermal protection
Steam Pipe Insulation
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Kingflex insulation installation on large diameter industrial pipe
Large Diameter Pipe
Kingflex rubber foam insulation on air conditioning system pipes
Air Conditioning
Kingflex insulation applied to building mechanical room equipment
Mechanical Room
Kingflex foam insulation for solar hot water system pipeline
Solar Hot Water
Global Service Network

Serving 88+ Countries Worldwide

Over 16 years of international export experience. Kingflex products have been delivered to projects across Asia, Europe, the Americas, the Middle East, Africa and Oceania — backed by a robust supply chain and responsive global service team.

88+
Countries Served
16+
Years Exporting
6
International Sales Experts
OEM
Custom Service Available
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R & D

Research & Development Innovation

Kingflex maintains a dedicated R&D team of 8 professional engineers continuously developing next-generation insulation formulations, testing new materials and optimizing production processes to stay ahead of evolving global standards and customer requirements.

Kingflex R&D laboratory testing elastomeric foam insulation material properties
Material Testing Laboratory
Kingflex R&D team conducting thermal conductivity research on insulation products
Thermal Conductivity Research
Kingflex quality control and fire retardancy testing for rubber foam insulation
Fire Retardancy Testing
🔬

8 Professional Engineers

Dedicated R&D team with deep expertise in polymer chemistry and thermal physics.

🧪

In-House Testing

Full laboratory capability for thermal conductivity, fire retardancy, moisture resistance and compression testing.

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Custom Formulation

OEM capability to develop specialized insulation compounds for unique project requirements.

🌍

Global Standards

Products continuously updated to meet evolving international standards including BS 476, ASTM, CE and UL94.

Certificates

International Quality Certifications

Our products have passed BS 476, CE, REACH, RoHS, UL94, ASTM and other international certifications, ensuring product quality and compliance with global standards across all major markets.

BS 476 fire test certificate for Kingflex rubber foam insulation products
BS 476 Fire Test
CE certification for Kingflex elastomeric foam insulation European market
CE Certification
REACH and RoHS compliance certificate for Kingflex insulation materials
REACH / RoHS
UL94 and ASTM certification for Kingflex rubber foam insulation fire safety
UL94 / ASTM
Our Team

The People Behind Kingflex Excellence

Our employees are amazing in their own right, but together they are what makes Kingflex such a fun and rewarding place to work. Kingflex team is a tight-knit, talented group with a shared vision of giving consistently first-class service for our clients. Kingflex has eight professional engineers in R&D Department, 6 professional international sales specialists, and 230 skilled workers in the production department.

8
R&D Engineers
6
International Sales
230+
Production Workers
45+
Years Combined Expertise
Kingflex professional team of engineers, sales and production workers
Kingflex team group photo at company headquarters
Why Choose Kingflex

Our Competitive Advantages

🏭

45+ Years of Manufacturing Heritage

Founded in 1979 as the first thermal insulation manufacturer north of the Yangtze River. Decades of accumulated know-how underpin every product we make.

⚙️

5 Automatic Assembly Lines

Fully automated production ensures dimensional consistency, superior surface quality and the capacity to fulfill large-volume orders on time.

🌍

Global Export Experience

16+ years of exporting to 88+ countries. Our team understands international shipping, compliance documentation and local market requirements.

📋

Comprehensive Certifications & Traceability

All Kingflex products carry full traceability and have passed BS 476, CE, REACH, RoHS, UL94 and ASTM certifications — giving you complete confidence in quality and regulatory compliance for any global project.

  • BS 476 — UK/European fire performance standard
  • CE — European conformity marking
  • REACH & RoHS — Chemical safety compliance
  • UL94 & ASTM — North American standards
  • Full product traceability from raw material to delivery
🔧

OEM Custom Service

We support OEM manufacturing to meet different project specifications, including custom dimensions, densities and special formulations.

🔬

Dedicated R&D Team

8 professional engineers continuously innovating to improve product performance and develop solutions for emerging industry challenges.

🛡️

10–15 Year Service Life

Kingflex rubber foam insulation products are designed for a service life of 10 to 15 years under normal operating conditions, minimizing lifecycle replacement costs.

Our Service

Complete Insulation System Solutions

🏗️

Our Production Capacity

At present, Kingflex has 5 large automatic assembly lines, with an annual production capacity of more than 600,000 cubic meters, and has become a designated production enterprise designated by the Ministry of Energy, the Ministry of Electric Power and the Ministry of Chemical Industry.

Learn More →
🌐

Our Responsibility

Supply customers all over the world with a full set of energy-saving insulation system solutions. Kingflex is an integrated solution provider of thermal insulation, cold insulation and noise reduction for buildings and industries — committed to reducing energy consumption and carbon emissions globally.

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Our Customers

Trusted by Clients Around the World

Real conversations, real satisfaction. Our international customers trust Kingflex for consistent quality, reliable delivery and responsive technical support — every time.

Customer chat screenshot showing positive feedback on Kingflex insulation product quality
International client chat screenshot confirming Kingflex delivery and order satisfaction
Customer inquiry chat showing Kingflex technical support response for HVAC insulation
Overseas buyer chat screenshot with Kingflex sales team on rubber foam pipe order
Customer satisfaction chat screenshot for Kingflex elastomeric insulation export order
FAQ

Frequently Asked Questions

Everything you need to know about Kingflex elastomeric rubber foam insulation products, specifications and services.

Q1
What is elastomeric rubber foam insulation used for?
It is mainly used for HVAC ducts, air conditioning pipes, building thermal insulation, industrial pipeline cold insulation and sound insulation.
Q2
Is Kingflex rubber foam insulation fire resistant?
Yes, our rubber foam insulation is fire retardant, which meets the safety standards of building and industrial projects.
Q3
What is the difference between rubber foam and rock wool insulation?
Rubber foam is flexible, closed-cell and moisture-proof, suitable for HVAC and building insulation. Rock wool is high-temperature resistant and fireproof, suitable for industrial high-temperature pipeline insulation.
Q4
Do you provide customized insulation products?
Yes, we support OEM service to meet different project needs, including custom dimensions, densities and special formulations for unique applications.
Q5
What certifications do your products have?
Our products have passed BS 476, CE, REACH, RoHS, UL94, ASTM and other international certifications, ensuring product quality and compliance with global standards.
Q6
Does Kingflex products have traceability?
Yes, Kingflex products have full traceability from raw material sourcing through production to final delivery, ensuring complete quality accountability.
Q7
What thickness of rubber foam insulation sheet roll can you produce?
We can produce from 6mm to 50mm thickness in our rubber foam insulation sheet rolls to accommodate a wide range of thermal insulation requirements.
Q8
What is the service life of rubber plastic pipe and board?
Under normal operating conditions, the service life will be approximately 10 to 15 years, providing excellent long-term value for building and industrial projects.
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Factory & Product Gallery
Kingflex factory production line for rubber foam insulation manufacturing
Production Line
Kingflex automatic assembly line for elastomeric foam insulation products
Assembly Line
Kingflex quality inspection of rubber foam insulation pipe products
Quality Inspection
Kingflex warehouse with finished rubber foam insulation products ready for export
Export Warehouse
Kingflex rubber foam insulation sheet roll product display
Sheet Roll Products
Kingflex insulation pipe products packaged for international shipping
Packaged for Export
Kingflex foam insulation production process raw material extrusion
Extrusion Process
Kingflex insulation product testing and certification process
Product Testing
Kingflex international trade show exhibition booth for insulation products
Trade Show
Kingflex rubber foam pipe insulation close-up detail product photo
Product Detail
Kingflex factory exterior building and production facility
Factory Exterior
Kingflex insulation product range display for customer selection
Product Range
Kingflex customer visit to factory for quality inspection and audit
Customer Factory Visit
Kingflex rubber foam insulation product in HVAC installation application
HVAC Application
Kingflex foam insulation installed on industrial equipment for thermal protection
Industrial Equipment
Kingflex insulation product packaging with brand label for export
Brand Packaging
Kingflex global shipment and export logistics for insulation products
Global Logistics
Kingflex company headquarters aerial view and facility overview
Headquarters
Kingflex energy saving insulation system solution overview
Energy Solutions

Ready to Insulate Your Next Project?

Get expert advice, product specifications and competitive pricing from the Kingflex team. We serve 88+ countries with fast response and reliable delivery.

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