Since 1979 Β· 40+ Years of Excellence

Global Leader in
Elastomeric Thermal
Insulation Solutions

Kingflex Insulation Co., Ltd. β€” Professional manufacturer of NBR/PVC rubber foam insulation, rock wool, and glass wool products. Trusted by clients in 66+ countries with 600,000 mΒ³ annual production capacity.

40+
Years of History
66+
Export Countries
600,000 mΒ³
Annual Capacity
5
Automatic Assembly Lines
Kingflex Insulation Co., Ltd. company overview and manufacturing facility
16+ Years Exporting
Globally

Professional Thermal Insulation Manufacturer & Exporter

Kingflex Insulation Co., Ltd. is a professional manufacturing and trading combo for thermal insulation products. Our research, development, and production department is located in Dacheng β€” the well-known capital of green-building materials in China. We are an energy-saving, environmentally friendly enterprise concentrating on research and development, production, and sales.

In operation, Kingflex takes energy saving and consumption reduction as the core concept. We provide comprehensive insulation solutions through consultation, R&D, production, installation guidance, and post-sale service β€” leading the development of the global building materials industry.

🏭

5 Auto Assembly Lines

State-of-the-art automated production ensuring consistent quality at scale.

🌍

66+ Export Countries

Trusted partner for projects across six continents and major global markets.

πŸ”¬

8 R&D Engineers

Dedicated research team continuously innovating insulation formulations.

βœ…

Multi-Certified

BS 476, CE, REACH, RoHS, UL94, ASTM and more international standards.

The Kingflex Competitive Advantage

From closed-cell structure to global logistics, every aspect of our operation is engineered to deliver superior insulation performance and unmatched reliability.

πŸ§ͺ

Closed-Cell Structure β‰₯98%

Our NBR/PVC rubber foam achieves over 98% closed-cell rate, delivering outstanding thermal insulation, moisture resistance, and long-term stability in demanding environments.

πŸ”₯

Fire Retardant & Self-Extinguishing

All Kingflex products are flame retardant and self-extinguishing off fire, meeting BS 476, UL94, and ASTM safety standards for building and industrial applications.

🌑️

Wide Temperature Range

Engineered to perform reliably from -40Β°C to +105Β°C, our elastomeric insulation is ideal for both cryogenic cold insulation and high-temperature industrial pipeline applications.

πŸ†

Designated Enterprise by China's Ministry of Energy, Electric Power & Chemical Industry

Kingflex holds the prestigious designation as an approved production enterprise by three major Chinese government ministries β€” a testament to our manufacturing excellence, product reliability, and adherence to national energy-saving standards. This recognition positions us as a benchmark supplier for large-scale infrastructure, industrial, and commercial insulation projects both domestically and globally.

πŸ’§

Superior Moisture Resistance

Low water vapor permeability prevents condensation on cold pipes and surfaces, protecting systems from corrosion and energy loss over a 10–15 year service life.

πŸ”§

OEM & Custom Solutions

We support full OEM service and custom specifications β€” thickness from 6mm to 50mm, ID from 6mm to 114mm β€” tailored precisely to your project requirements.

πŸ“¦

Full Traceability System

Every Kingflex product batch is fully traceable from raw material sourcing through production and delivery, ensuring complete quality accountability for your supply chain.

40+ Years of Manufacturing Excellence

Kingflex is established by Jinwei Group, which has more than 40 years of history. Kingway Group was established in 1979 and was the first manufacturer of thermal insulation materials north of the Yangtze River β€” a pioneering legacy that defines our commitment to innovation.

πŸ—οΈ
1979
Foundation
Kingway Group established β€” first thermal insulation manufacturer north of the Yangtze River in China.
🏭
2000s
Kingflex Brand Launch
Kingflex Insulation Co., Ltd. established as the professional manufacturing and export arm of Jinwei Group.
🌍
2008+
Global Expansion
Products exported to 66+ countries. Kingflex becomes a recognized name in global thermal insulation markets.
πŸ†
Today
Industry Leader
5 automatic assembly lines, 600,000 mΒ³ annual capacity, 230+ workers, and multiple international certifications.
Kingflex insulation production facility with automated assembly lines

World-Class Manufacturing Infrastructure

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

Our products are widely used in construction, petroleum, chemical, national defense, aerospace, and other industries. Kingflex products have been exported to more than 66 foreign countries over the past 16 years, establishing a global footprint backed by consistent quality and reliable supply.

5 Auto Assembly Lines
600K+ mΒ³ Annual Capacity
230+ Production Workers
3 Ministry Designations

Innovation-Driven R&D Department

Our dedicated R&D team of 8 professional engineers continuously advances insulation technology β€” developing formulations that exceed international performance benchmarks for thermal conductivity, moisture resistance, and fire safety.

Kingflex R&D laboratory testing elastomeric insulation materials
Kingflex insulation material quality testing and inspection process
Kingflex rubber foam insulation production and R&D innovation
βš—οΈ

Material Science

Advanced NBR/PVC compound formulations optimized for closed-cell structure and long-term performance.

πŸ”¬

Quality Testing

Rigorous in-house testing for thermal conductivity, moisture absorption, compression resilience, and fire resistance.

πŸ“

Custom Engineering

Bespoke product development for specialized applications in aerospace, defense, and cryogenic industries.

🌱

Green Innovation

Eco-friendly formulations meeting REACH, RoHS, and global environmental compliance standards.

International Certifications & Standards

Kingflex products have passed rigorous international certification processes, ensuring compliance with global building, industrial, and safety standards across all major markets.

Kingflex BS 476 fire resistance certification for rubber foam insulation
Kingflex CE certification for thermal insulation products
Kingflex REACH and RoHS compliance certificate for insulation materials
Kingflex UL94 and ASTM certification for fire retardant insulation
BS 476 CE Certified REACH Compliant RoHS Compliant UL94 Listed ASTM Standards

Talented People, Shared Vision

Our employees are amazing in their own right, but together they are what makes Kingflex such a rewarding place to work. The Kingflex team is a tight-knit, talented group with a shared vision of giving consistently first-class service for our clients.

Kingflex has 8 professional engineers in the R&D Department, 6 dedicated international sales professionals, and 230 skilled workers in the production department β€” all committed to delivering insulation excellence from concept to delivery.

8 R&D Engineers
6 International Sales
230+ Production Workers
πŸ“© Send Inquiry
Kingflex professional team and production department workers
Kingflex international sales team serving global customers
Kingflex R&D and engineering team developing insulation solutions

Complete Insulation Product Range

Kingflex thermal insulation products are widely used in construction, petroleum, chemical, national defense, aerospace, and other industries β€” available in rubber foam, rock wool, and glass wool formats.

Elastomeric NBR/PVC rubber foam insulation sheet roll by Kingflex

Elastomeric NBR/PVC Rubber Foam Insulation Sheet Roll

Sheet & Roll
Rubber elastomeric foam insulation tube for HVAC systems

Rubber Elastomeric Foam Insulation Tube

Pipe & Tube
Elastic rubber foam insulation pipe for building HVAC applications

Elastic Rubber Foam Insulation Pipe

Pipe & Tube
Corrosion resistant rubber foam insulation tube for industrial pipelines

Corrosion Resistant Rubber Foam Insulation Tube

Industrial
Black rubber foam insulation pipe for air conditioning systems

Black Rubber Foam Insulation Pipe

HVAC
Foam rubber foam insulation tube flexible elastomeric

Foam Rubber Foam Insulation Tube

Flexible
HVAC rubber foam insulation tube for air duct thermal insulation

HVAC Rubber Foam Insulation Tube

HVAC
Rock wool insulation board for industrial and building thermal insulation

Rock Wool Insulation Board

Rock Wool
Elastomeric rubber foam insulation system for underground pipelines

Elastomeric Rubber Foam Insulation System for Underground

Specialty
Kingflex flexible insulation material for cryogenic low temperature applications

Kingflex Flexible Insulation Material for Cryogenic Applications

Cryogenic
Cryogenic rubber foam for low temperature and high humidity insulation

Cryogenic Rubber Foam for Low Temperature & High Humidity

Cryogenic
Rock wool thermal insulation blanket for industrial pipeline insulation

Rock Wool Thermal Insulation Blanket

Rock Wool
Black rubber foam insulation sheet roll NBR/PVC Kingflex standard specification Kingflex rubber foam insulation sheet roll cross-section closed cell structure

Black Rubber Foam Insulation Sheet Roll

Standard Dimensions

Material: NBR/PVC
Thickness: 6mm–50mm
Density: 40–55 kg/mΒ³
Service Temperature: -40Β°C to 105Β°C

Key Advantages

βœ“ Closed cell rate over 98%
βœ“ Compression resilience over 80%
βœ“ Flame retardant, self-extinguishing
βœ“ Low thermal conductivity
βœ“ High moisture resistance factor

Applications

HVAC duct insulation, wall/roof/basement thermal insulation, anti-condensation, industrial equipment insulation, cold storage, chemical process pipes
View Related Products
Black rubber foam insulation pipe NBR/PVC for HVAC and chilled water systems Kingflex rubber foam insulation pipe cross section showing closed cell structure

Black Rubber Foam Insulation Pipe

Standard Dimensions

Material: NBR/PVC
Thickness: 9mm–40mm
ID: 6mm–114mm
Density: 40–55 kg/mΒ³
Service Temperature: -40Β°C to 105Β°C

Key Advantages

βœ“ Even foam, closed cell β‰₯98%
βœ“ Professional pipe spraying equipment
βœ“ Compression resilience over 80%
βœ“ Reduces pipe freezing/cracking risk
βœ“ Flame retardant & self-extinguishing

Applications

Chilled/hot water pipes, condensate pipes, antifreeze for building HVAC, cold storage, chemical & petrochemical pipes, solar hot water systems
View Related Products

Versatile Solutions Across Every Industry

From central air conditioning to aerospace, Kingflex insulation products deliver proven performance across the most demanding application environments worldwide.

HVAC central air conditioning duct insulation application with Kingflex rubber foam
❄️

HVAC & Air Conditioning

Heat insulation for air ducts, chilled water pipes, condensate lines, and equipment rooms.

Building construction thermal insulation for walls, roofs, and basement with Kingflex
πŸ—οΈ

Building Construction

Wall, roof, and basement thermal and sound insulation for residential and commercial buildings.

Industrial petroleum chemical pipeline insulation with Kingflex elastomeric foam
🏭

Industrial & Petrochemical

Insulation for equipment, steam pipes, storage tanks, and process pipelines in industrial plants.

Cold storage cold chain logistics pipeline insulation with Kingflex cryogenic foam
🧊

Cold Storage & Cold Chain

Cryogenic thermal insulation for cold rooms, refrigerated carriages, and cold chain logistics systems.

Hotel mall hospital ventilation duct noise reduction insulation with Kingflex
🏨

Hotels, Malls & Hospitals

Insulation and noise reduction for ventilation ducts, machine rooms, and water supply systems.

Rail transit aerospace defense thermal insulation application Kingflex products
πŸš‚

Rail Transit & Aerospace

Specialized thermal insulation for rail carriages, national defense systems, and aerospace applications.

Global Installation Projects

Kingflex insulation products have been successfully installed in major projects across 66+ countries β€” from commercial buildings and industrial plants to cold chain facilities and infrastructure projects.

Kingflex insulation project installation on industrial pipeline system
Kingflex rubber foam insulation installed on HVAC duct system project
Kingflex insulation installation project in commercial building construction
Kingflex thermal insulation project on chilled water pipe system
Kingflex insulation project cold storage cold room pipeline installation
Kingflex elastomeric foam insulation installed on industrial equipment
Kingflex insulation pipe project installation showing completed thermal insulation
Kingflex rubber foam sheet insulation project application on building roof

Worldwide Service Network & Supply Chain

Kingflex provides a full set of energy-saving insulation system solutions to customers worldwide β€” serving as an integrated solution provider for thermal insulation, cold insulation, and noise reduction for buildings and industries globally.

🌐

66+ Export Countries

Our products are exported to over 66 countries across Asia, Europe, the Americas, Middle East, Africa, and Oceania β€” backed by 16+ years of international trade experience.

🚒

Reliable Supply Chain

Kingflex maintains robust logistics partnerships ensuring timely delivery of bulk orders, with flexible packaging options and full export documentation support for all major trade lanes.

🀝

Full Service Support

From initial consultation and product selection to installation guidance and post-sale technical support β€” Kingflex is your complete insulation partner throughout the project lifecycle.

66+ Countries Served
16+ Years Exporting
600K mΒ³ Annual Output
10–15 Year Service Life

State-of-the-Art Production Facility

Our Dacheng manufacturing base features advanced automated production equipment, rigorous quality control processes, and a clean, organized production environment that reflects our commitment to excellence.

Kingflex factory automated production line for rubber foam insulation manufacturing
Kingflex insulation production facility interior showing manufacturing equipment
Kingflex factory warehouse storing finished rubber foam insulation products
Kingflex insulation products quality inspection and packaging process
Kingflex production workers operating automated insulation assembly line
Kingflex rubber foam insulation roll production and cutting process
Kingflex factory exterior building in Dacheng China green building materials capital
Kingflex insulation product packaging and export preparation for global shipment
Kingflex factory production line showing NBR/PVC foam extrusion process
Kingflex insulation pipe production process with quality control inspection
Kingflex factory automated cutting and slitting of rubber foam insulation sheets
Kingflex finished insulation products ready for export packaging and shipping
Kingflex factory production department workers quality control process
Kingflex insulation material testing laboratory quality assurance process
Kingflex rubber foam insulation products stored in factory warehouse before export
Kingflex factory production line automated foam insulation manufacturing process
Kingflex insulation production facility showing scale of manufacturing operations
Kingflex rubber foam insulation pipe production detail showing pipe cross section
Kingflex insulation sheet roll production process in automated assembly line

Trusted by Clients Worldwide

Real conversations, real satisfaction. Kingflex maintains long-term partnerships with clients across 66+ countries, built on consistent product quality, reliable delivery, and responsive service.

Kingflex customer chat screenshot showing positive feedback on rubber foam insulation quality
Kingflex international customer testimonial chat screenshot about insulation product delivery
Kingflex customer order confirmation chat showing repeat purchase of thermal insulation
Kingflex global customer feedback screenshot praising insulation product performance
Kingflex customer satisfaction chat screenshot showing long-term partnership with insulation supplier
πŸ’¬

Ready to Discuss Your Project?

Join thousands of satisfied customers worldwide. Contact our international sales team today for a customized insulation solution.

πŸ“© Send Inquiry Now

Frequently Asked Questions

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

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.
Is Kingflex rubber foam insulation fire resistant?
Yes, our rubber foam insulation products are fire retardant and self-extinguishing, meeting the safety standards of building and industrial projects including BS 476, UL94, and ASTM.
What is the difference between rubber foam and rock wool insulation?
Rubber foam is flexible, closed-cell, and moisture-proof β€” suitable for HVAC and building insulation. Rock wool is high-temperature resistant and fireproof, suitable for industrial high-temperature pipeline insulation.
Do you provide customized insulation products?
Yes, we support full OEM service to meet different project needs. We can customize thickness from 6mm to 50mm, pipe ID from 6mm to 114mm, and various densities and surface finishes.
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.
Does Kingflex products have traceability?
Yes, Kingflex products have full traceability. Every batch can be traced from raw material sourcing through production and delivery, ensuring complete quality accountability.
What thickness of rubber foam insulation sheet roll can you produce?
We can produce rubber foam insulation sheet rolls from 6mm to 50mm thickness, with density ranging from 40 to 55 kg/mΒ³ and service temperature from -40Β°C to 105Β°C.
What is the service life of rubber plastic pipe and board?
The service life of Kingflex rubber foam pipe and board insulation products is approximately 10 to 15 years under normal installation and operating conditions.

Our Mission & Commitment

🌍

Global Insulation Solutions

Supply customers all over the world with a full set of energy-saving insulation system solutions β€” from initial design consultation through product supply, installation guidance, and long-term technical support.

πŸ—οΈ

Integrated Solution Provider

Supply integrated solutions for thermal insulation, cold insulation, and noise reduction for buildings and industries β€” leading the development of global green building materials and energy-efficient construction practices.

πŸš€

Ready to Start Your Insulation Project?

Connect with Kingflex's international sales team today. Get expert consultation, custom product specifications, and competitive pricing for your thermal insulation requirements.

Product Categories

News & Blog