日本製鋼所

Infobox company | name = 日本製鋼所 | name_en = The Japan Steel Works, Ltd.. | logo = | image = Gate city ohsaki shinagawa tokyo 2009-3.JPG | image_size = 250px | image_caption = 日本製鋼所位於東京的總部 | type = 株式會社 | native_name = 日本製鋼所 | native_name_lang = ja | other_name = | traded_as = | fate = | predecessor = | successor = | foundation = | defunct = | location = 東京都品川區大崎1丁目11番1號西棟 | locations = | area_served = | founder = | key_people = 佐藤育男 | industry = | products = | services = | revenue = | operating_income = | net_income = | aum = | assets = | equity = | owner = | num_employees = | parent = | divisions = | subsidy = | homepage = ， 是一家生產鋼鐵加工品及工業用機械的日本企業 ， 屬三井集團旗下公司 。