Showa Steel Works
A Japanese government-sponsored steel complex in Anshan that became a centerpiece of Manchukuo’s industrial and wartime economy.
Last updated August 31, 2026
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Overview
Showa Steel Works was a major steel enterprise established under Japanese rule in Manchuria and developed into one of the most important industrial installations of Manchukuo. Its origins lay in the Anshan Iron & Steel Works, founded in 1918 as a subsidiary of the South Manchurian Railway Company. Anshan was selected because it was close to the Takushan iron-ore deposits and connected to the railway network serving Mukden and other strategic centers. The early operation worked with relatively low-grade ore, but its location and access to transport, coal, and related infrastructure gave it considerable long-term potential. The enterprise was reorganized and renamed Showa Steel Works in 1933, during a period when Japan was intensifying the economic development and political consolidation of Manchukuo. Its activities extended beyond the core production of pig iron and steel. The Anshan site became the center of a wider industrial district containing facilities for steel pipes, mill rolls, power generation, coal processing, cement, bricks, and other inputs required by a modern heavy-industrial system. Coal from Fushun, roughly 35 kilometers away, supported furnaces and power plants, while nearby railways enabled the movement of ore, fuel, machinery, and finished materials. The company’s strategic position increased after 1937, when industrialist Yoshisuke Aikawa organized the Manchurian Industrial Development Company, commonly known as Mangyō. The holding company, associated with Nissan, Manchukuo, the South Manchurian Railway, and the Kwantung Army’s broader economic plans, acquired a controlling interest in Showa Steel Works and directed substantial investment toward expansion. The steel works also adopted the Krupp-Renn process under license from German steel interests. Japanese personnel were sent to Germany for training beginning in 1937, and equipment associated with the process was installed by 1939. Production expanded rapidly. Showa Steel was responsible for a substantial share of Manchuria’s processed iron output in the early 1930s, and its planned capacity rose sharply before and during the Pacific War. By 1941, the works reportedly had capacity for approximately 1.75 million tonnes of iron bars and one million tonnes of processed steel. By 1942, total production capacity had reached about 3.6 million tonnes, placing the complex among the world’s major iron and steel centers. In 1944, the enterprise accounted for an important share of pig iron and rolled-steel production across Japanese-held territory, making it essential to imperial military supply and infrastructure construction. This importance made the plant a regular target for United States Army Air Forces B-29 raids. Air attacks damaged the complex and reduced its capacity, despite the assignment of Japanese Army air-defense units to Anshan. The operation also relied on Chinese forced labor; more than 4,000 Chinese prisoners were reported at the site by early 1942. This labor system formed part of the coercive wartime economy surrounding Japanese industrial development in Manchuria. In 1944, Manchukuo reorganized its iron and steel sector, combining Showa Steel Works with smaller enterprises under direct supervision by the Manchukuo Ministry of Economy. The company’s independent identity ended with Japan’s defeat in 1945. Soviet forces dismantled surviving equipment and transported it to the Soviet Union. Chinese communist forces subsequently took control of the ruins and rebuilt the industrial site as Anshan Iron and Steel Works, which became a major steel producer in modern China. Showa Steel Works therefore survives primarily as a historical name associated with Japanese imperial industrialization, wartime production, forced labor, and the industrial transformation of Anshan.
History
Showa Steel Works developed from the Anshan Iron & Steel Works, established in 1918 by the South Manchurian Railway Company. The works were built at Anshan in Liaoning because the city was near the Takushan iron-ore deposits and linked to the railway infrastructure centered on Mukden. Its initial production depended on relatively low-grade ore, but the location enabled the gradual creation of an integrated industrial complex. The enterprise was renamed and reorganized as Showa Steel Works in 1933. This change coincided with the intensification of Japanese-backed economic development in Manchukuo. The steel plant became more than a furnace and rolling operation: surrounding facilities produced steel pipes, mill rolls, cement, bricks, electric power, and other industrial inputs. Coal from Fushun fed the furnaces and supported related power and chemical facilities. By the end of the 1930s, Fengtian Province contained hundreds of Japanese industrial plants, with Anshan serving as one of the central nodes of the regional heavy-industry system. A major change came in 1937, when Yoshisuke Aikawa organized the Manchurian Industrial Development Company. The holding company, associated with Nissan and Manchukuo and supported by the strategic priorities of the Kwantung Army, took a controlling interest in Showa Steel Works. Large-scale investment followed. The company licensed the Krupp-Renn process from German steel interests, dispatched personnel to Germany for training, and installed related equipment at Anshan by 1939. The resulting expansion made the works central to Manchukuo’s economic and military planning. Manchurian processed-iron production rose sharply during the 1930s, and Showa Steel accounted for a substantial portion of the region’s output. Its stated capacity reached roughly 1.75 million tonnes of iron bars and one million tonnes of processed steel in 1941, then approximately 3.6 million tonnes of total capacity in 1942. By 1944, its output represented a significant share of pig iron and rolled steel production across Japanese-held territory. The works supplied materials needed for railways, construction, machinery, and wartime production. The plant’s strategic role also exposed it to direct attack. United States Army Air Forces B-29 bombers repeatedly targeted Anshan, and Japanese Army aviation units were assigned to defend the area. Despite those measures, bombing caused serious damage and reduced the complex’s capacity. The operation also depended on coercive labor. Chinese prisoners were used at the plant, with the number reported to exceed 4,000 by early 1942. This history connects the works to the broader system of forced labor and exploitation that accompanied Japanese imperial industrialization in Manchuria. In 1944, Manchukuo reorganized the iron and steel sector. Showa Steel Works was combined with smaller enterprises and placed under direct supervision by the Manchukuo Ministry of Economy. The arrangement lasted only briefly. Japan’s defeat in 1945 ended the Manchukuo regime and the original corporate structure. Soviet forces dismantled the surviving machinery and shipped it to the Soviet Union. Chinese communist forces later occupied the site and rebuilt it as Anshan Iron and Steel Works. The modern Anshan steel complex thus inherited the physical location and industrial legacy of Showa Steel Works, although it became part of a different political and economic system.
- 1945
Original operation dismantled after the war
[1]Soviet forces removed remaining equipment, while the site was later rebuilt as Anshan Iron and Steel Works.
- 1944
Steel-sector consolidation
[1]Manchukuo combined Showa Steel Works with smaller enterprises under Ministry of Economy supervision.
- 1942
Capacity reaches approximately 3.6 million tonnes
[1]The expanded complex became one of the major iron and steel centers in the world by reported total production capacity.
- 1941
Large production capacity recorded
[1]Reported capacity reached approximately 1.75 million tonnes of iron bars and one million tonnes of processed steel.
- 1939
Krupp-Renn equipment installed
[1]Licensed German process equipment was installed after technical training and technology transfer.
- 1937
Control transferred to the Manchurian Industrial Development Company
[1]Aikawa’s new holding company acquired a controlling interest and directed substantial capital toward expansion.
- 1933
Renamed Showa Steel Works
[1]The Anshan enterprise was reorganized and renamed as Showa Steel Works during the industrial expansion of Manchukuo.
- 1918
Anshan Iron & Steel Works established
[1]The South Manchurian Railway Company established the predecessor operation at Anshan near iron-ore deposits and major rail links.
Products and positioning
A strategically important, state-supported heavy-industrial enterprise and showcase of Manchukuo’s industrialization program.
Ironmaking · 1918
Pig iron
Pig iron was one of the core outputs of Showa Steel Works and the basic feedstock for subsequent steelmaking. Production expanded as the Anshan complex received new investment, improved processing technology, and greater access to coal and transport infrastructure.
Steel products · 1933
Processed steel
The works produced processed steel for industrial, infrastructure, and military applications. Its expansion before and during the Pacific War made the plant a major supplier within the Japanese-controlled territories.
Rolled products · 1933
Iron bars and rolled steel
Iron bars and rolled steel formed important finished or semi-finished outputs of the integrated complex. Reported wartime capacity figures show the scale to which these lines were developed before bombing and postwar dismantling ended the original operation.
Controversies
Brand decisions
1944
Consolidate Manchukuo’s iron and steel enterprisesStrategyBackground
The wartime government sought tighter administrative control and greater coordination across the regional steel industry.
Action taken
Showa Steel Works was combined with smaller enterprises and placed under direct supervision by the Manchukuo Ministry of Economy.
Aftermath
The reorganization lasted until Japan’s defeat and the subsequent dismantling of the plant by Soviet forces.
1937
Accept controlling investment from the Manchurian Industrial Development CompanyM&ABackground
Manchukuo and Japanese military planners sought to coordinate heavy industry and increase the region’s capacity to supply imperial economic and military needs.
Action taken
The Manchurian Industrial Development Company took a controlling interest in Showa Steel Works and directed major investment into the complex.
Aftermath
The works expanded rapidly and became one of the central steel producers in Japanese-controlled territory.
1937
License the Krupp-Renn ironmaking processStrategyBackground
The company needed additional technology and trained personnel to process ore and raise industrial efficiency at large scale.
Action taken
Showa Steel Works licensed the Krupp-Renn process from German steel interests and sent personnel to Germany for training.
Aftermath
Related equipment was installed by 1939 and supported the plant’s subsequent production expansion.
Recent events
- 1945
Soviet forces dismantle the remaining plant after Japan’s defeat[1]
Other
After the war, Soviet forces dismantled surviving equipment and transported it to the Soviet Union, ending the original enterprise.
- 1944
Air raids damage the Anshan steel complex[1]
Other
Repeated B-29 attacks against the strategically important plant caused heavy damage and reduced capacity by as much as approximately 30 percent.
- 1944
Showa Steel Works incorporated into a Manchukuo steel-sector reorganization[1]
M&A · Regulation
Manchukuo combined Showa Steel Works with smaller enterprises and placed the resulting operation under direct Ministry of Economy supervision.
- 1939
Krupp-Renn equipment installed at Anshan[1]
Product generation
Equipment associated with the licensed German process was installed, improving the works’ production capability and efficiency.
- 1937
Manchurian Industrial Development Company takes a controlling interest[1]
M&A
Yoshisuke Aikawa’s Manchurian Industrial Development Company became a controlling investor and directed major expansion of the steel works.
- 1937
Showa Steel adopts the Krupp-Renn process[1]
Product generation
The company licensed the Krupp-Renn ironmaking process and sent personnel to Germany for technical training.
- 1933
Showa Steel Works reorganized from the Anshan Iron & Steel Works[1]
Other
The Anshan operation was reorganized and adopted the Showa Steel Works name during the expansion of Japanese-controlled industry in Manchuria.
Sources1 sources
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