Koike Sanso Kogyo Co., Ltd.
Japanese manufacturer of cutting, welding, and gas-related products, founded in 1918.
Last updated September 15, 2026
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Overview
Koike Sanso Kogyo Co., Ltd. is a Japanese company founded in 1918 in Mukojima, Tokyo, as Koike Seisakusho. It is a leading manufacturer of cutting, welding, and gas-related products, and describes itself as a total system supplier of gas, welding, and cutting solutions. Its products serve industries that process steel plates, aluminum, stainless steel, and other metals, including shipbuilding, structural steel, bridge construction, architecture, construction machinery, and industrial machinery. The company was incorporated in 1936 and listed on the second section of the Tokyo Stock Exchange in 1969.
History
Koike Sanso Kogyo Co., Ltd. traces its origins to October 1918, when Koike Seisakusho, its precursor, was founded in Mukojima, Tokyo. In December 1936, Koike Seisakusho was incorporated as Koike Sanso Kogyo Co., Ltd., with its head office established at 4-1775 Hirai, Edogawa-ku, Tokyo. In June 1937, the company name was changed to Koike Seisakusho, and the head office was transferred to 3-35-16 Nishikoiwa, Edogawa-ku, Tokyo. In September 1947, the Ichikawa Factory (oxygen gas plant) was established in Ichikawa-shi, Chiba. In June 1948, a sales office was established in Taihei-cho, Sumida-ku, Tokyo. In April 1951, the company started production of the IK-12 portable automated gas cutting machine, which became a best-seller and served as a forerunner to today's Koike world leading automated cutting machines. In January 1953, the company name was changed to Koike Sanso Kogyo Co., Ltd., and a sales office was established in Osaka. In December 1953, Koike manufactured Japan's first electrical discharge machine and was awarded the first Okouchi Commemorative Award for its achievement. In January 1964, the Chiba Acetylene Factory was established in Ichihara-shi, Chiba. In June 1966, Koike jointly developed Japan's first NC gas cutting machine with Toshiba Corporation. In October 1969, the company's stocks were listed in the second section (machinery) of the Tokyo Stock Exchange. In April 1974, Koike America Inc. (wholly-owned subsidiary) was established in Chicago, Illinois, as a marketing and after-sales service base in the United States (later merged with Koike Aronson, Inc. in December 2000). In August 1975, Gunmakoike Co., Ltd. (now a consolidated subsidiary) was established.
Products and positioning
Leading manufacturer of cutting, welding, and gas-related products; total system supplier of gas, welding, and cutting solutions.
IK-12 portable automated gas cutting machine
Became a best-seller soon after its release and served as a forerunner to today's Koike world leading automated cutting machines.
DTP-25 Crab
Latest product released on 2025-10-01.
WEASEL-V
Latest product released on 2025-10-01.
Sources4 sources
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