Corporate Brochure

Message from founder

” A machinery salesman does not mean a man who pay lip service and fawn on their customers,but sell a reliable machine, has an absolute confidence on his machine and be able to dispatch an expert staff to meet a customer’s request.Otherwise there is no way to success as a mechanician. ”

Hironao Tsubone

Message from CEO

It has been 65 years since Koki Shokai started its production and distribution of rivet machine in Ota-ku, Tokyo. We developed swage method and have been supporting variety of industries with our machine. We appreciate all the support and coaching customers provided to us. Without it, we would not be standing here and rivet machine would not be where it is now. With long history of swage and its importance in manufacturing, we have been operating with our responsibility and pride. We are willing to continue providing high quality service to small businesses with our flexibility and mobility.

syachoCEO Ryuichi Takahara

Company Information

Company Name Koki Shokai Co., Ltd.
Established 1937/05/01
Reorganized to Company limited 1951/09/15
Capital 10,000,000 JPY
Address 1-24-6 Kamata, Ota-Ku, Tokyo Tel: +81-3-3732-5461 Fax:+81-3-3732-5464
Main financing bank Bank Of Tokyo Mitsubishi UFJ Kamata Branch Mizuho Bank Kamata Branch Sumitomo Mitsui Banking Corporation Kamata West Branch
Business Lineup Production and Distribution of Rivet machine


1932 Company founded by Hironao Tsubone, leader of machinery industry at the time known as “Kikaijin”(Machine Man), in Kyobashi-ku
1951 Established Koki Shokai Co., Ltd. in Kugahara, Ota-ku Launched hitting rivet machine Received patents
1952 Built laboratory and assembly station in Kamata, Oa-ku Moved Headquarter
1971 Developed pneumatic rivet machine Received patents
1997 Released #2604-P(thrust force 17.8kN)
2006 Developed and servo rivet machine and made it commercially available
2010 Released #2703(thrust force 30kN)