Nippon Chutetsukan K.K. (5612.T) manufactures and sells ductile cast iron pipes, special shaped pipes, finite element method iron covers and lids for water supply, sewerage, gas, electricity and communications; polyethylene gas pipes and resin concrete products; valves, stoppers and accessories including push rings, rubber rings, bolts and nuts; and provides water supply facility construction, engineering, pipe laying works, warehousing, road freight transport, and industrial waste transportation, transshipment and storage services primarily in Japan. The company operates through two segments, Ductile Cast Iron Related and Resin Pipe and Gas Related, targeting waterworks, sewage, gas and industrial applications with 388 employees and trailing twelve-month revenue of 17.05 billion yen. Founded in 1937 and headquartered at Konwa Bldg., 1-12-22 Tsukiji, Chuo-ku, Tokyo, Japan, it maintains affiliations with the JFE Group. In March 2025, Kubota Corporation proposes to acquire shares in a newly established manufacturing subsidiary of Nippon Chutetsukan, subject to Japan Fair Trade Commission review completed on March 27, 2025, marking a key strategic alliance in its operational expansion.