Established Topy Industries by merging four Toto Group companies, including electric furnaces and wheel manufacturers.
Pursuing synergies through integrated production that manufactures and processes steel,
We have developed and supplied products that support daily life and industry.

1964

Japan Motor Wheel Co., Ltd. Ayase Factory (now Ayase Plant) opened

Built a new factory in Ayase City, Kanagawa Prefecture

Expansion into passenger car, truck and bus wheel plants

 

 

Established Topy Industries, Ltd.

合併契約調印式
expansion
Merger agreement signing ceremony

Wheel manufacturer Japan Motor Wheel Co., Ltd., electric furnace manufacturer Toto Steel Mfg., Co., Ltd., construction machinery parts manufacturer Toto Zoki Co., Ltd., and steel frame and bridge manufacturer Toto Tekko Co., Ltd. are merged to form Topy Industries, with each of them aiming to hold the top spot in their respective product fields. Named Topy Industries with enthusiasm

1971

120-ton electric furnace, continuous casting equipment, and medium rolling plant completed Toyohashi Plant

Expanding crude steel production during the period of rapid economic growth

1974

Established Topy Fasteners, Ltd.

Started industrial fastener business

Currently deployed in four countries, supplying products that make use of precision metal processing technologies to automobile manufacturers, etc.

1976

Completed integrated production line Aluminum wheel Toyokawa Plant (first in Japan)

Achieves integrated production from melting, casting, heat treatment, and processing
Improve productivity and quality

1982

Developed SGOR®, the world's largest ultra-large wheels for mining equipment

Unveiled at the 25th Tokyo Motor Show
expansion
Unveiled at the 25th Tokyo Motor Show

Currently producing wheels with a diameter of 63 inches (approximately 3 tons in weight)
Over 90% global market share