CONTACT
Company information

Company information

MESSAGE

Message from the Representative Director

飯塚肇

Iizuka & Co., Ltd. began its journey in 1953 as a repair shop for fluid components such as pumps and valves used in petroleum refining plants. Over the years, we have grown into a manufacturer of fluid components used in the energy, semiconductor, medical, pharmaceutical, and chemical industries.

Our company upholds the philosophy of “continuously refining and shining as a trusted, proposal-based technology group, contributing to societal development, and pursuing the happiness of our employees, customers, and business partners while fostering a sense of confidence and pride.”
Each of our employees remains committed to self-improvement without being satisfied with the status quo. With this mindset, we strive to establish the Iizuka Brand across five key areas and continue to innovate as a fluid component manufacturer that ensures customer satisfaction.
Following the belief that “Work does not come to you by waiting, nor does it fall from the sky—it must be seized,” we are deeply grateful to our customers who have chosen us among many component manufacturers and those who have supported our growth over the years. We take great care in manufacturing each product with precision and remain committed to delivering value in terms of Quality, Cost, and Delivery.

The year 2025 marks a major turning point for our company. At the end of December 2024, we completed the construction of our first manufacturing plant, achieving our long-planned consolidation of production sites. With a 140% increase in capacity compared to our previous facilities, we have optimized machine layout to enhance productivity and reduce lead times, while also reforming our internal logistics.
Additionally, we are promoting digitalization to improve progress sharing and enable faster responses, driving innovation and reform from multiple perspectives.

With a fearless spirit of challenge, we continue to evolve as a fluid equipment component manufacturer, upholding our company motto: “Challenge, Passion, and Service.” We will always push ourselves to the next level.

We sincerely appreciate your continued guidance and support.

Hajime Iizuka
President
Iizuka and Co., Ltd.

MANAGEMENT POLICY

Management policy

The policy at the time of establishment of our company was manufacturing for society of the next generation, an attitude of creating a culture of serving as a duty, enthusiasm to boldly accept the challenge of new technology and provide a manufacturing service satisfactory for the customer; thus, we will educate human resources to play a key role in the next generation and seek enhanced technology through tireless efforts and technological innovations.

We will continue to work for manufacturing that can contribute to the future of Japan through technology.

OVERVIEW

Company profile

Company name IIZUKA & CO., LTD.
Address

Headquarters and Factory
3-15-16, Handa, Kashiwazaki-City,
Niigata 945-0812 Japan
TEL: +81 (0)257 23 5611
FAX:+81 (0)257 23 2813

Manufacturing Factory,Sheet metal assembly Factory,Quality Logistics Factory
931-42, Karuigawa, Kashiwazaki-City,
Niigata 945-1355 Japan
(The 1st Manufacturing Factory)
TEL: +81 (0)257 23 5611
FAX: +81 (0)257 23 2813

(The 2nd Manufacturing Factory,Sheet metal assembly Factory)
TEL: +81 (0)257 41 5551
FAX: +81 (0)257 41 5501

(Quality Logistics Factory)
TEL: +81 (0)257 41 5703
FAX: +81 (0)257 41 5704

Aichi Sales Office
3F Nakamobillding, 17-34-3chome, Nagoya,Meieki,Nakamuraku,
Aichi 450-0002 Japan
TEL:+81 (0)52-756-4785
FAX:+81 (0)52-756-4786

Established Nov. 01. 1953
Management and Capital Fund Dec. 21, 1959 (Changed organization to a limited private company)
Nov. 10, 1989 (Changed name to Co., Ltd.)
Capital Fund JPY 25,000,000.
Machine list A list of our company facilities is available.
Please download the contents below.
Machine list
Business items
  • Manufacture and assembly of fluid equipment ・control valves
  • Manufacture and assembly of general industrial pump components
  • Manufacture and assembly of general and special machinery components
  • Manufacture of vacuum equipment
  • Medical equipment
    Medical device components
  • Semiconductor parts manufacturing
  • Import and machining of lost-wax products
  • Import and sales of parts made in China/Korea
  • Welding, fabrication
  • 2D/3D design support, manufacturing the prototypes for analysis
  • General cutting
Main business partners
(Alphabetical)
Azbil Corporation
Keihin Co., Ltd.
Shinwa Controls Co., Ltd.
Nikkiso Co., Ltd.
Nikkiso Eiko Co., Ltd.
Nippon Daiya Valve Co., Ltd.
Nikkiso Cryo, Inc.(USA)
Main subcontractors 【Materials】
  • Uex, Ltd.
  • Sandvik k.k.
  • Sumihei Seisakusho Co., Ltd.
  • REIWA SPECIAL STEEL CORPORATION
  • Fugen Corporation
  • SATO SHO-JI CORPORATION
【Consumable tools】
  • Santec Co., Ltd.
  • SHOEI SANGYO CO.,LTD.
【Heat treatment】
  • Watanabe Seisakusho Co., Ltd.
  • Takahashi Heat Treatment Co.,Ltd.
【Forged materials】
  • Murayama Tanzousho Co., Ltd.
【Processing】
Domestic suppliers and corporation
  • Dalian Jiashan-Iizuka Lost-Wax Industries Co., Ltd. (China)
  • Kunyongda International Co., Ltd. (Taiwan)
【Lost-wax】
  • Dalian Jiashan-Iizuka Lost-Wax Industries Co., Ltd. (China)
  • Kunyongda International Co., Ltd. (Taiwan)
  • JING YUH METAL(Taiwan)
  • Dalian Fukushima Co., Ltd. (China)
Main banks DAISHI HOKUETSU BANK, Ltd
  • 1-1, Ibarame, 1chome, Kashuwazaki,
    Niigata,945-0055,Japan
Sumitomo Mitsui Banking Corporation
  • 1-4-2, Higashiodori,chuo-ku,Niigata,
    Niigata,950-0087,Japan
THE TAIKO BANK, LTD
  • 1-3-15, Nishihoncho,Kashiwazaki,
    Niigata 945-0066,Japan
HISTORY

Company history

1953 November 1953
Established at 44, Okubo, Kashiwazaki-City
1959 December 21, 1959
The organization changed to Iizuka Ironworks Limited Private Company
1960 August 20, 1960
The headquarters factory moved to 2-4-8, Ekimae, Kashiwazaki-City
1981 July 2, 1981
The headquarters factory moved to 3-15-16, Handa, Kashiwazaki-City
1989 November 10, 1989
Company name changed to IIZUKA & CO., LTD.
Completion of first phase facility expansion (983㎡)
2004 November 1, 2004
Completion of Yasuda Factory (gross space 561.268㎡)
2006 October 6, 2006
Gained the Eco Action 21 Certificate
November 20, 2006
Gained the approval for the management innovation plan
2009 June 1, 2009
Acquired ISO 9001:2000 certification (Headquarters)
※February 16, 2010: Transferred to ISO 9001:2008
2011 June 30, 2011

Acquired certification of plans for specific research and development in accordance with item 1 of article No. 4 in the Act on Enhancement of Small and Medium-Sized Enterprises’ Core Manufacturing Technology
(Plans for specific research and development certificate No. Kanto11061297)

A capital injection of ¥15 million from Tokyo Small and Medium Business Investment & Consultation Co., Ltd.

Increased the capital fund to ¥25 million

July 28, 2011
Strategic Foundational Technology Improvement Support Operation
2012 April 5, 2012
Completion of Karuigawa Factory (gross space 1,200㎡)
2014 March 28, 2014
The 60th anniversary ceremony was held
April 28, 2014
Adoption of 2013 Small and Medium-Size Business /Small Enterprise, Manufacturing/Commerce/Service Innovative Enterprise
May 16, 2014
Patent for the screw rotor machining method (Pat No. 5540352) was registered.
June 20, 2014
Gained certification under JIS Q 9100:2009 and JIS Q 9100:2008 (Yasuda Factory/Karuigawa Factory)
2017 March 23, 2017
Selected as one of the 300 small and medium-sized enterprises in Japan(SMEs)
2018 May 8, 2018
Completed the second Karuigawa factory
2019 May 8, 2019
Niigata prefecture Economic Promotion Award
2020 April 13, 2020
Opened Aichi sales office
2023 April 28, 2023
Quality logistics factory completed
2024 May 5, 2024
SDGs Initiative Begins
November 29, 2024
The first manufacturing plant was completed on the Karuigawa Factory site
2025 January 1, 2025
Consolidation and relocation of manufacturing functions at the Head Office Factory and Karuigawa Factory
LOCATION

Address

Headquarters

3-15-16, Handa, Kashiwazaki-City,
Niigata 945-0812 Japan
TEL +81 (0)257 23 5611 / FAX +81 (0)257 23 2813

  • Public transportation: JR Shinetsu Line, Ibarame St., 15 minutes on foot
  • Car: Hokuriku Expressway, Get off at Kashiwazaki IC, 5 minutes.
Headquarters and Factory

Manufacturing Factory,Sheet metal assembly Factory,Quality Logistics Factory

931-42, Karuigawa, Kashiwazaki-City,
Niigata 945-1355 Japan
(The 1st Manufacturing Factory)
TEL +81 (0)257 23 5611 / FAX +81 (0)257 23 2813
(The 2nd Manufacturing Factory,Sheet metal assembly Factory)
TEL +81 (0)257 41 5551 / FAX +81 (0)257 41 5501
(Quality Logistics Factory)
TEL +81 (0)257 41 5703 / FAX +81 (0)257 41 5704

  • Public transportation: JR Shinetsu Line, Yasuda St. 10 minutes by car
  • Car: Hokuriku Expressway, Kashiwazaki IC, 10 minutes
Karuigawa Factory・The 2nd Karuigawa Factory

Aichi Sales Office

3F Nakamobillding, 17-34-3chome, Nagoya,Meieki,Nakamuraku,
Aichi 450-0002 Japan
TEL +81 (0)52-756-4785 / FAX +81 (0)52-756-4786

  • By public transportation: 12 minutes on foot from Nagoya Station on JR Tokaido Shinkansen Line
Aichi Sales Office
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