6239 · Machinery
2026-11-02T00:00:00.000 · Monthly close
The Group’s core businesses are water-related and energy-related operations, providing the design, manufacture, construction, sale and maintenance of intake screens and water treatment equipment. It is strategically pursuing overseas market expansion while maintaining a high overseas sales ratio. The Group has adopted the medium-term plan “FLIGHT PLAN: TRANSFORM 2027” and announced a new medium-term plan through 2029. Its consolidated subsidiaries include 那賀設備（大連）有限公司, NAGAOKA VIETNAM CO., LTD., and 矢澤フェロマイト株式会社.
98 records
Products supplied as ancillary components around screens used for water intake, including special insulating joints and products for preventing electrolytic corrosion and metal corrosion in wells. By ensuring the durability of intake facilities, they contribute to longer equipment life and stable operation.
Services covering construction and maintenance of water treatment plants, including design, installation and maintenance. The business is consistently described as supporting customers from implementation through operation and maintenance, rather than supplying equipment alone.
Water intake screens, including well screens and ring-base screens for deep wells, as well as surface-water intake screens. Their high open-area ratio improves intake efficiency, while sand control and backwashing technologies help prevent clogging in sand layers and extend the service life of wells and water intake facilities.
A high-speed subseabed infiltration intake system provided as a seawater intake system for seawater desalination plants. Its features include reducing the ingress of marine organisms and debris and reducing chemical treatment.
A range of equipment developed as an improved version of エアシス, with expanded VOC removal targets and capacity. It supports broader applications and target substances, including expansion into the removal of airborne VOCs.
Portable water purification equipment designed to provide emergency water supplies during disasters. By using chemical-free treatment technology, it is intended to meet the need for chemical-free water treatment even in emergencies.
Equipment that doses powdered activated carbon to address raw-water odors and improve water quality. The disclosed configurations include suction-type powdered activated carbon mixers and sealed, fully automated equipment for small-scale water treatment plants.
Internal equipment, the core components used in high-temperature, high-pressure and highly corrosive environments such as catalytic reactions and synthesis processes. It features high durability and precision and is provided together with manufacturing and sales, inspection, servicing and maintenance.
Water-collection gallery products and backwashing and sand-control technologies designed to prevent clogging of sand layers and extend the service life of wells and water-collection galleries. Specific components include special protective gabions and multi-flange lift pipes.
A filtration system that biologically treats iron, manganese, ammonia nitrogen and arsenic in groundwater, tap water and other water sources without chemical dosing, and cleans the filter bed. It is a core product supporting sustained treatment performance and a broader range of applications through automated controls and expanded uses.
Energy-efficient water treatment equipment that removes VOCs (volatile organic compounds), free carbonic acid and low-concentration VOCs, helping reduce operating energy and pretreatment chemicals. It is a core product that also supports expansion through エアシスPlus.
The technologies and systems for obtaining and operating ISO 9001 certification as a quality-control method. They support the quality-control framework and related regulations.