Nakanishi Shoji CO., Ltd. Product Lineup

This document provides an overview of our double pipe system, including construction procedures, factory manufacturing steps, and onboard assembly procedures. The overview of the double pipe support includes the characteristics of the special fatty support material and the properties of fluororesin. Additionally, it contains diagrams, illustrations, and actual product photos, making it easy to reference when considering implementation. We encourage you to read it. 【Contents (partial)】 ■ Introduction ■ Overview of the double pipe system ■ Overview of double pipe support (manufactured by Nakanishi Trading) ■ Construction procedures ■ Verification of double pipe line analysis *For more details, please refer to the PDF document or feel free to contact us.

The retainer ring system of the "GS-Hydro System" is used for piping with a maximum allowable operating pressure of 350 to 400 bar. For special applications, it can be used at high operating pressures such as 690 bar. Extensive testing programs have demonstrated compatibility with high-pressure piping systems made from various materials. Additionally, the 37° flare flange system is suitable for high-pressure piping systems made from a variety of materials, ranging from carbon steel to tungum (UNSC69100 copper alloy). 【Features】 ■ A welding-free piping system that can be managed from design to construction ■ Reduces welding work time to one-third compared to conventional welding ■ Reduces training time for personnel to one-third compared to conventional welding ■ Welding-free solutions are possible for high-pressure, large-diameter sizes that require skill (maximum diameter: 300A) ■ Proven track record of implementation in shipyards and research institutions such as earthquake engineering research centers *For more details, please download the PDF or feel free to contact us.

NAKANISHI's Double Wall Piping System leak-free, easy-fitting and reliable solutions are excellent choices for challenging offshore and marine industries. NAKANISHI is the original provider of double wall piping systems and with over years of experience. Our people know double wall piping better than anyone!

Chuo Seiki Co., Ltd. will be exhibiting at "Gastech 2025" to be held in Milan, Italy. This exhibition is one of the largest in the gas and energy industry, bringing together over 1,000 companies and around 50,000 attendees. Major energy providers and startups leading the industry will showcase their products, making it a venue where many business opportunities arise. We look forward to welcoming many customers, including shipyards, shipowners, and management companies. *Please note that the content of the product display may change without prior notice. 【Exhibition Overview】 Name: Gastech 2025 Dates: September 9 (Tuesday) to September 12 (Friday), 2025 September 9 / 9:00 AM - 6:00 PM, September 10 / 9:00 AM - 7:00 PM, September 11 / 9:00 AM - 6:00 PM, September 12 / 9:00 AM - 2:00 PM Venue: Fiera Milano Booth Number: K-1

In the oil industry, the risk of leaks during the transportation and storage of crude oil and various petroleum products is a significant issue. Leaks not only cause environmental pollution but can also lead to serious accidents such as fires and explosions, making safety measures the top priority. Our double-pipe system prevents external leakage even in the event of a leak, ensuring safety. The double-pipe system, with its inner and outer pipe structure, allows for early detection of leaks and suppresses external discharge. Our double-pipe system is essential for enhancing the safety of oil plants. 【Usage Scenarios】 - Oil refining plants - Petrochemical plants - Transportation pipelines for crude oil and petroleum products - Oil storage tanks 【Benefits of Implementation】 - Reduction of leak risks - Prevention of environmental pollution - Improvement of plant safety - Compliance with legal regulations

In the shipbuilding industry, the safety of fuel supply lines in gas-fueled ships using LNG or LPG is the most critical issue. Damage to piping or gas leaks can lead to serious accidents. Our double-pipe system employs a double-pipe structure to reduce the risk of gas leaks in case of an emergency. The double-pipe system protects the inner pipe with the outer pipe, safeguarding it from external impacts and corrosion, thereby ensuring safety. 【Usage Scenarios】 - Fuel supply lines for gas-fueled ships - LNG/LPG carriers - Other vessels handling gas 【Benefits of Implementation】 - Reduced risk of gas leaks - Improved safety - Compliance with classification standards - Long-term cost reduction

In the pharmaceutical industry, strict management of product quality is required. In particular, contamination by foreign substances and quality deterioration due to temperature changes during the manufacturing process directly affect the safety and efficacy of products, necessitating thorough countermeasures. A double-pipe system contributes to maintaining the quality of pharmaceuticals by reducing the risk of fluid leakage in the piping and preventing contamination from the outside. Our double-pipe system enhances the safety of gas supply lines and strengthens the quality control system of pharmaceutical factories. 【Usage Scenarios】 - Gas supply lines in the pharmaceutical manufacturing process - Gas supply in clean rooms - Manufacturing environments where quality control is of utmost importance 【Benefits of Implementation】 - Reduction of foreign substance contamination risks - Compliance with quality retention standards - Improved reliability of the manufacturing process

In the space development industry, reducing the weight of rockets and satellites is a critical challenge for lowering launch costs and improving performance. In particular, the weight of the fuel supply line significantly impacts overall performance. To achieve weight reduction, it is essential to adopt lightweight materials that possess high strength and durability. Our dual-tube system realizes weight reduction and contributes to solving various challenges in space development. 【Application Scenarios】 - Rocket fuel supply lines - Satellite gas supply lines - Space station piping systems 【Benefits of Implementation】 - Reduced launch costs due to weight reduction - Improved system reliability - Increased design flexibility

In the semiconductor manufacturing industry, safe transportation of high-purity gases is essential for the stable supply of high-quality products. In particular, contamination by fine foreign substances or gas leaks can significantly degrade product quality. Our double-tube system reduces the risk of gas leaks through its dual structure of inner and outer tubes, maintaining the quality of high-purity gases. Additionally, the use of special fatty supports and fluororesins ensures high safety and reliability. We encourage you to consider this. 【Usage Scenarios】 - Semiconductor manufacturing plants - Gas supply lines in clean rooms - Research facilities requiring high-purity gas supply 【Benefits of Implementation】 - Maintenance of high-purity gas quality - Reduction of gas leak risks - Improved safety

In the semiconductor manufacturing industry, safe transportation of high-purity gases is essential for the stable supply of high-quality products. In particular, contamination by fine foreign substances or gas leaks can significantly degrade product quality. Our double-tube system reduces the risk of gas leaks through its inner and outer tube structure, maintaining the quality of high-purity gases. Additionally, the use of special fatty supports and fluororesins ensures high safety and reliability. We encourage you to consider this. 【Usage Scenarios】 - Semiconductor manufacturing plants - Gas supply lines in clean rooms - Research facilities requiring high-purity gas supply 【Benefits of Implementation】 - Maintenance of high-purity gas quality - Reduction of gas leak risks - Improved safety

The GS-Hydro System's retain ring system is used for piping with a maximum allowable operating pressure of 350 to 400 bar. For special applications, it can be used at high operating pressures such as 690 bar. Extensive testing programs have demonstrated compatibility with high-pressure piping systems made from various materials. Additionally, the 37° flare flange system is suitable for high-pressure piping systems made from a variety of materials, from carbon steel to tungum (UNSC69100 copper alloy). 【Features】 ■ A welding-free piping system that can be managed from design to construction ■ Reduces welding work time to one-third compared to conventional welding ■ Reduces training time for personnel to one-third compared to conventional welding ■ Welding-free options are available for high-pressure, large-diameter sizes that require skill (maximum diameter: 300A) ■ Proven implementation in shipyards and research institutions such as earthquake engineering research centers *For more details, please download the PDF or feel free to contact us.

The GS-Hydro System's retain ring system is used for piping with a maximum allowable operating pressure of 350 to 400 bar. For special applications, it can be used at high operating pressures such as 690 bar. Extensive testing programs have demonstrated compatibility with high-pressure piping systems made from various materials. Additionally, the 37° flare flange system is suitable for high-pressure piping systems made from a variety of materials, ranging from carbon steel to tungum (UNSC69100 copper alloy). 【Features】 ■ A welding-free piping system that can be managed from design to construction ■ Reduces welding work time to one-third compared to conventional welding ■ Reduces training time for personnel to one-third compared to conventional welding ■ Welding-free options are available for high-pressure, large-diameter sizes (maximum diameter: 300A) that require a high level of skill ■ Proven implementation in shipyards and research institutions such as seismic engineering research centers *For more details, please download the PDF or feel free to contact us.

The GS-Hydro System's retain ring system is used for piping with a maximum allowable operating pressure of 350 to 400 bar. For special applications, it can be used at high operating pressures such as 690 bar. Extensive testing programs have demonstrated compatibility with high-pressure piping systems made from various materials. Additionally, the 37° flare flange system is suitable for high-pressure piping systems made from a variety of materials, ranging from carbon steel to tungum (UNSC69100 copper alloy). 【Features】 ■ A welding-free piping system that can be managed from design to construction ■ Reduces welding work time to one-third compared to conventional welding ■ Reduces training time for personnel to one-third compared to conventional welding ■ Welding-free solutions for high-pressure, large-diameter sizes are also possible (maximum diameter: 300A) ■ Proven track record of implementation in shipyards and research institutions such as earthquake engineering research centers *For more details, please download the PDF or feel free to contact us.

Marine engines and their associated products, etc.