Manufacturing and shipping buffer tanks for power plants.

We have experience in manufacturing gas turbine cylinder casings and assembling high-pressure turbines. For large fabricated products and large machined parts, please contact Mitsubishi Nagasaki Machinery!

Mitsubishi Nagasaki Machinery has a production system that can consistently handle welding, assembly, heat treatment, and machining for products ranging from small sizes to ultra-large products in the 500-ton class. From various cylinders for gas turbines made of high-tech alloy steel to various steel structures, we flexibly respond to the diversifying needs of users, and we will continue to make further efforts to contribute to both quality and reliability domestically and internationally.

• Contract manufacturing

We have manufactured over 720 units of towers, vessels, heat exchangers, and more to date, including more than 260 ASME stamped products!

Mitsubishi Nagasaki Machinery Co., Ltd. specializes in the manufacturing of reactors using special steels such as alloy copper and clad steel for pressure vessels. We have established a quality system based on ISO 9001 and have a comprehensive production system that allows for consistent manufacturing through detailed design and engineering know-how, including stress analysis, and state-of-the-art equipment. Our products have a proven track record, operating not only domestically but also in key areas of petroleum refining plants, chemical plants, fertilizer plants, and more around the world!

• others

More than 720 units of towers, vessels, heat exchangers, and other equipment have been delivered to date. Over 260 ASME stamped products! We have dedicated pumps necessary for pressure testing.

What kind of company is Mitsubishi Nagasaki Kiko? It is a manufacturer that specializes in the production of ultra-high-pressure pressure vessels, including ultra-high-pressure double-tube heat exchangers, which are essential equipment for low-density polyethylene (LDPE) production plants, as well as various other high-pressure equipment. The company has a complete manufacturing system for various high-pressure equipment and possesses a dedicated pump capable of generating 1000 MPa, which is necessary for self-tightening treatment and pressure testing. Additionally, they have specialized engineers in ultra-high pressure, enabling compliance with various standards such as the High-Pressure Gas Safety Act and ASME.

• Contract manufacturing

We can also manufacture large products weighing 500 tons. Equipped with high-performance facilities for each production process, we provide one-stop service from material procurement to shipping.

Our company specializes in "large-scale canning" and "large-scale machining," and we are engaged in contract manufacturing of various industrial machinery, steel structures, and related products. From our dedicated wharf at the Fukahori Factory (Nagasaki City), we can receive materials and ship large products by sea. We provide a comprehensive service from material procurement to canning, heat treatment, machining, painting, inspection, and sea shipment. We also excel in thick plate welding, with extensive experience in carbon steel SS400 in thicknesses ranging from 50 to 250mm. We can accommodate thicknesses over 250mm, so please feel free to consult us. 【Sizes for Various Processing】 Tanks: Up to 8,000mm in diameter or a total length of 10,000mm Large diameter products: Up to 18,000mm in diameter (with experience in blast furnace steel plates) Small diameter products: Up to 38,000mm in total length (with experience in spades) Shipping weight: Up to 500t ★ We are currently showcasing an introduction video of our facilities. Please take a look. You can also view examples of our deliveries through "PDF Download." Feel free to contact us with any inquiries.

• Contract manufacturing

On September 11, 2025, AC Tasarim, a cable blade manufacturer, and our company signed a sales agency agreement for Japan. This was also announced in the company's press release and on social media. Founded in Turkey in 2003, AC Tasarim manufactures flexible EMI cable shields (copper braid), polyester braid, meta-aramid braid (Nomex cable sleeves), flat copper braid busbars/ground braids, all AA59569-coded copper braids, and released AeroBraid in 2025, the world's lightest EMI braid. All manufactured copper braids are certified to military standards. AC Tasarim products hold key certifications including VDE/VG certification, German Federal Armed Forces certification, NATO NSN coding, AS9100 quality certification, and JOSCAR certification. Cable braids and EMI shielding products, essential for wire harnesses in the aerospace and defense industries, are becoming increasingly difficult to source as demand rises. TC Tasarim products are stocked by manufacturers and distributors to ensure quick response times.

● This is a leak testing device for small electronic components that does not use fluorinated inert liquids (PFAS-free). ● There is no longer a need for unstable visual confirmation through liquid immersion testing. It adopts a quantitative testing method that allows for stable pressure leak testing. ● It is a tabletop leak testing device specifically for gross leaks, with accuracy equal to or greater than that of liquid immersion testing. ● The detectable range is approximately 1×10⁻² Pa·m³/s to 1×10⁻⁶ Pa·m³/s (varies depending on the target product). ● It is suitable for sealed structures ranging from a few millimeters to a maximum of 80 × 70 mm. Please feel free to contact us for more information!

The "Mechanical Stitching Method" by Nichinichisui Road Machinery Co., Ltd. is a new technique that allows for the repair of metal cracks without the application of heat. By using special bolts and reinforcement plates, cracks are physically removed, and repairs are made without affecting the base material with heat. Repairs can be carried out in environments where open flames cannot be used. Since no heat is applied, the disassembly of equipment is minimized. ◎ For more details, please contact us. ◎ If a detailed technical explanation is needed, please contact us.

Adopted for a project on the promotion, demonstration, and commercialization of advanced wastewater treatment facilities using the Indian national rotary fiber unit, a pilot plant with a capacity of 1000 m³/day will be constructed within a wastewater treatment facility in Bengaluru, South India. Verification will be conducted for one year starting from June 1, 2023, and will conclude on May 31, 2024. Throughout the year, all of India's stringent discharge standards will be met, and a wastewater treatment manual will be created and promoted in India.

The "HM-S6" is an embedded park sensor that detects vehicles through changes in magnetic flux and can respond to various situations from passing to stationary. It can be used for the opening and closing of the input doors at waste treatment plants, as well as for gates where vehicles pass and in outdoor parking applications. It can also be installed on rebar and steel plates. 【Features】 - Resistant to the effects of natural environments such as rain, snow, temperature changes, and geomagnetism. - Protection rating IP68 reduces the risk of water ingress. - Ten times the load capacity compared to conventional embedded park sensors (according to our comparison). - Can distinguish between vehicles even when they pass continuously, one by one. - Can be installed on rebar and steel plates. *For more details, please refer to the PDF document or feel free to contact us.