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30+ Years of Experience
We Provide Product Customization Services

JNFLEX specializes in manufacturing metal bellows, heat protection tubes, and various types of corrugated pipes. With our core team boasting nearly 20 years of expertise in design and production, we are proud to offer industry-leading craftsmanship, advanced design capabilities, and testing equipment. We ensure high-quality, customized solutions tailored to meet your specific needs.

APPLICATIONS

Automotive

Construction

New energy

Railway and mobility

Automotive Industry

JNFLEX flexible tubes and metal corrugated pipes are widely used to protect various automotive components, offering comprehensive protection for A/C lines, plastic pipes, hoses, engine wiring harnesses, and other critical parts that require reflective thermal insulation.

Construction Industry

JNFLEX Pre-stressed Corrugated pipe is embedded in steel bar in the bridge steel banding process, the purpose is to reserve space for wear steel strand when pouring concrete, so as to facilitate the later steel strand and tension, due to corrugated pipe with corrugation, and better concrete combination, a very good combination between steel strand, cement paste, beam plate after the condensation of steel strand tension grouting, so as to ensure uniform distribution of tensile stress and stress loss.

Energy storage Industry

The application of JNFLEX corrugated tubes in the automotive energy storage industry is primarily demonstrated through the use of energy storage bellows, which can store and release energy. These flexible corrugated tubes and metal bellows are designed to withstand high-temperature environments and offer excellent corrosion resistance, effectively absorbing vibration and thermal expansion stress. They are widely used in exhaust systems, fuel oil systems, sensor protection, and wire harness protection, among other applications.

Rail transit industry

JNFLEX has extensive experience in the design, development, and production for the rail transit industry. We primarily supply silencer ducts, window ducts, ventilation connection hoses, and various accessories for rail applications. Our commitment is to deliver professional solutions tailored to the specific needs of the rail industry.

Hot Products

Automotive pipeline protection

Aluminum foil tubeHeat Shrink Tubing

Flat-clad aluminum foil tubeFlat sheath

Automotive pipeline connection

Stainless steel bellowsNylon tube

Power steering silencer hose Exhaust pipes

ABOUT JNFLEX

JNFLEX (CHANGZHOU) CO., LTD (the former is Changzhou Jiangnan Prestressed Corrugated Pipe Factory) established in 1995 and located in Changzhou, Jiangsu province, is a high-tech enterprise dedicated to providing customers with flexible connection and protection products and solutions. We specialize in the design, development, production, and technical service of various corrugated duct, flexible ducts and tubes, stainless bellows, and kinds of plastic corrugated hoses.

1995

Founded

30+

Experience

30000

Factory area

1000+

Partners

HONORARY
QUALIFICATIONS

The JNFLEX Business System incorporates a Quality Management system compliant to IATF 16949 and ISO 9001 certifications. We understand that our high standards of quality translate into passenger safety and customer solutions. Therefore, we plan to never falter in our commitment to retaining and improving our superior level of quality each and every day.

Quality Assurance

JNFLEX (CHANGZHOU) CO., LTD is partnering with the Science and Technology Bureau of Changzhou's Wujin District to set up an Engineering Technology Research Center, focusing on the R&D and innovation of corrugated pipe technology. Our team brings together industry experts dedicated to providing high-performance, versatile corrugated pipe products that meet the complex needs of various fields. With advanced R&D equipment and extensive technical expertise, we continuously overcome technical barriers and drive progress in the corrugated pipe industry.

our culture

Mission

To become the most valuable enterprise in flexible connection and protection solutions.

Vision

Continuously creating value for customers, employees, corporate stakeholders and the country

Values

Customer First
Continuous improvement
Dedication

Team work
Integrity
Innovation

long-term collaborations with
Fortune 500 companies
both domestically and internationally

Automotive
Industry

TI Automotive

Pre-stressed
Construction
Concrete

Shagang Group
CHINA RAILWAY GROUP

Energy Storage
Industry

Rail Transit
Industry

CRRC
New United Group
SIEMENS

News and Events

JNFLEX Successfully Concludes 2025 TAPA Thailand International Auto Parts & Accessories Show

We are pleased to share that JNFLEX has successfully wrapped up its participation at the 2025 TAPA Trade Fair held in BITEC Bangkok, Thailand.During the exhibition, we showcased our latest solutions in flexible metal hoses, heat protection sleeves, and corrugated pipes for the automotive industry. O

Zhongding Group 2023 Supplier Conference

JNFLEX (CHANGZHOU) CO., LTD (the former is Changzhou Jiangnan Prestressed Corrugated Pipe Factory) established in 1995 and located in Changzhou, Jiangsu province, is a high-tech enterprise dedicated to providing customers with flexible connection and protection products and solutions. We specialize in the design, development, production, and technical service of various corrugated duct, flexible ducts and tubes, stainless bellows, and kinds of plastic corrugated hoses.

JNFLEX team building activity

Since 1995, JNFLEX has grown into a large-scale enterprise with over 120 employees, more than 20% of whom are R&D personnel, and has obtained ISO9001 and IATF16949 certifications. Our products serve a variety of industries, including construction and infrastructure, automotive and marine, high-speed trains, steel metallurgy, environmental protection, and the new energy industry. We have established long-term collaborations with Fortune 500 companies both domestically and internationally.

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