Designing and manufacturing
thermoplastic tubes
for next-generation automobiles

3 million thermoplastic tubes
manufactured per month
For passenger and commercial
vehicles, EVs, and FCVs
Our thermoplastic tubes, hoses, and fittings have
extensive results of use by automobile manufacturers
and in general industrial applications.

Nitta’s thermoplastic tubes can
satisfy the needs of
various manufacturers in
the automotive industry.

Equipment and material numbers
Equipment and
material numbers

What are
thermoplastic tubes?

Thermoplastic tubes are products made of thermoplastic thermoplastic molded into the shape of tubes. They have the advantage of being relatively lightweight and easy to process, and play important roles in transporting gases and fluids or transmitting pressure. Their quality and performance allow them to be used in automotive applications, and they can also contribute to carbon neutrality depending on their material.

Respond to that requestWe can respond to customer requests like these:

We want to improve fuel efficiency
by reducing the weight of
metal and rubber piping.


Reduction of
weight and size

We want tubes that can
transport LLCs.


LLC resistance

We want tubes excelling
in low elution.


Low elution

We want tubes with excellent low permeability property.


Barrier properties

We want to request tubes to be developed to meet our requirements.


Custom design

We want tubes with excellent chemical resistance and heat resistance.


Chemical resistance and heat resistance

We want tubes with
small dimensional variations.


High dimensional accuracy

Reduction of weight and size can be achieved by replacing gas and liquid
piping with thermoplastic materials.
We can propose the best thermoplastic tubes to meet your requirements,
such as LLC resistance, low ion elution, and low permeability.

*We already have mass production results of products for thermal management and FCVs,
intended for automobile manufacturers. For details, see the Results of Use at the bottom of the page.

Suggest how to useApplication Proposals Using Thermoplastic Tubes

Compatible with various
in-vehicle layouts

Electric vehiclesEVs

Electric vehicles EVs

Fuel cell vehiclesFCVs

Fuel cell vehicles FCVs

We manufacture thermoplastic tubes compatible with next-generation automobiles such as electric vehicles (EVs) and fuel cell vehicles (FCVs) at our own plants (IATF16949 certified), under thorough quality management. We can develop thermoplastic tubes suitable for passenger vehicles and commercial vehicles (buses and trucks), so they can be manufactured to specifications and shapes that meet customer requirements.

Application Proposal1Electric VehiclesEVs

Can be used to cool battery packs, inverters, and other equipment used in EVs and PHEVs, to play a valuable role in thermal management.

Advantages of using thermoplastic tubes for cooling piping
■ Weight reduction
■ Size reduction
・Improved battery charge efficiency
・Improved ease of pipe routing
用途提案 電気自動車 EV

Application Proposal2Fuel Cell Vehicles FCVs

Can be used in various applications depending on the material and composition of tubes for gas and liquid used in FCVs.

Advantages of using thermoplastic tubes for hydrogen piping
■ Weight reduction
■ Corrosion resistance
■ Low ion elution
・Improved hydrogen consumption efficiency
・Ability to maintain electric resistance of cooling water
・Prevention of FC stack output drops
用途提案 燃料電池自動車 FCV

For more details about thermoplastic tubes


For inquiries by telephone


Auto Sales Department, Nitta Moore Division, Nitta Corporation
Support hours: 9:00 - 17:30 on weekdays (not available on weekends and holidays)

AchievementResults of Use

We have results of use in applications such as the following in Japan as well as overseas.

Coolant piping for urea
SCR system applicationsResults of use of tubes carrying LLCs as thermoplastic tubes for urea SCR systems

Coolant piping for urea SCR system applications
LLC (Long Life Coolant) piping for urea SCR systems
Heat from LLCs is transferred to frozen urea water to defrost it, contributing to the operation of the urea SCR system. In addition, their use as a replacement for rubber hoses contributes to reducing the weight of the LLC piping.

Various types of piping for fuel cell vehicles (FCVs)Results of use in FCVs as hydrogen piping to supply stacks, pure water piping, and drain piping

Various types of piping for fuel cell vehicles (FCVs)
Low-pressure hydrogen piping, pure water piping, and drain piping for FCVs
Low permeability to prevent the permeation of hydrogen, and sealing properties to prevent leakage.

Note that the above are only selected examples, and we are able to produce piping to meet customer needs.
We have many other results of use as well, so please feel free to inquire with us for more information.

ReasonsWhy Nitta’s Thermoplastic Tubes Are Selected by Customers

Many years of industry experience High-quality in-house products

Many years of industry experience High-quality in-house products

We have a long history of results in the automobile industry and a serial production system ranging from design to mass production.


Design of connectors

In addition to tubes, we can also design and develop connectors (joints).

グローバル対応 北米/ASEAN/中国/インド

Global support
North America/ASEAN/

We have locations in North America, the ASEAN region, China, and India, so we can provide global support.

TechnologyNitta’s Technology

Design of single-layer and multi-layer tubes

We can provide proposals for single-layer tubes and multi-layer tubes in accordance with required specifications. We will propose appropriate tube materials and compositions based on our experience and past results in applications for fuel, air brakes, urea SCR systems, and LLCs.

Design of single-layer and multi-layer tubes

Extrusion molding technology and manufacturing

We possess technology to accurately perform extrusion molding on melted thermoplastic to form tube shapes. Fine adjustments of tube inner and outer diameters, and adjustment of wall thicknesses, are also possible.

Extrusion molding technology and manufacturing

Forming technology

Tubes can be formed (bent) and processed into desired piping shapes. Since the accuracy of these bending processes is high, they can be useful to eliminate interference during assembly, so our tubes can be applied to routing in narrow spaces.

Forming technology

Assembly processing technology

We can offer processing techniques such as press-fitting connectors (joints) to both ends of tubes, attaching protectors to tubes, and installing clips.

Assembly processing technology

Connection methods
(proposals for connector attachment, etc.)

We can use connectors (joints) and other components to propose connection methods suitable for customer applications.

Connection methods <br><span>(proposals for connector attachment, etc.)

Click here for product details
including specifications.


FlowProcedure for Introduction

step1 Inquiry


Please contact us about your requested content using the Inquiry Form or by telephone.

step2 Specification check

Specification check

We will ask you about matters such as the usage conditions and requirements. If necessary, we may request coordination meetings via e-mail, online conferences, or in-person discussions.

step3 Detailed design

Detailed design

We will consider your requested conditions and propose the best shapes and specifications to meet them.

step4 開発/生産


We will develop and produce products based on the design content.

Reliable, trustworthy support system

We will propose, design, develop and mass-produce the best possible thermoplastic tubes based on Nitta’s extensive experience and past results.
We can provide a wide range of support, including support for prototyping, design assistance, technical support, and mass production support.

FAQFrequently Asked Questions (Q&A)

Can you produce prototypes?
Do you have connectors (connecting parts) available?
Up to what lengths can be manufactured?
Can your products be used with LLCs?
Are your products acceptable in terms of hydrogen permeation?
What are the limits for tube diameters that can be manufactured?
Up to what pressure can thermoplastic tubes be used at?
What is the range of temperatures that thermoplastic tubes can be used at?

Document request & inquiryDocumentation Requests
and Inquiries

We can send you documentation at no charge.
Please feel free to contact us about specifications, prices, and requests for consultation.

Handling of Personal Information

Be sure to read our Personal Information Protection Policy launch.

For inquiries by telephone


Auto Sales Department, Nitta Moore Division, Nitta Corporation
Support hours: 9:00 - 17:30 on weekdays (not available on weekends and holidays)