Company Profile

Name of Company SHORITSU SEISAKUSHO CO., LTD.
President Atsumoto Kato
Founding Nov 1,1959
Established Date May 1,1962
Capital 48 Millions of Yen
Location of Head Office 2-7-21 Matsushima, Edogawa-ku, Tokyo 132-0031
Location of Chiba Factory 1228-5 0ki, Yachimata City, Chiba Prefecture. 289-1126
Authorized certificates High Pressure Gas Safely Law Minister Authorized Office
ISO9001 Certificate
Number of Employees 110
Lines of Business Manufacturing of Forged Steel Valves
Carbon Steel, Stainless Steel, Low Alloy Steel, Special Steel and etc.
Manufacturing of Forged Parts
General Piping, Automobiles, Civil Construction Machines, Buildings, Industrial Machines, Machine Tools and etc.
Welfare Facilities Staff Dormitory, Company House
Member JPI (Japan Petroleum Institute),API(American Petroleum Institute),The High Pressure Gas Safety Institute of Japan,The High Pressure Gas Safety Institute of Chiba Prefecture ,Thermal and Nuclear Power Engineering Society,The Japan Society for Heat Treatment,The Japan Welding Engineerring Society,The Japanese Society for Non-Destructive Inspection,Japan Valve Manufacturers’ Association,Japan Forging Association,The Tokyo Chamber of Commerce and Industry ,The Chiba Chamber of Commerce and Industry, Tokyo Enployers’ Associations
Main Bank Sumitomo Mitsui Banking Cooporatin Shinkoiwa Branch,Mizuho Bank Hirai Branch,The Shoko Chukin Bank Fukagawa Branch

Company History

Nov. 1, 1959 Kato Seisakusho, a privately owned concern of the present President Tomozo Kato, was established at 2-14-17 Matsushima, Edogawa-ku, Tokyo.
May 1, 1962 Established Shoritsu Seisakusho Co.,Ltd with a capital of 3 millions yen 
Jan. 9, 1968 Approved by the American Petroleum Institute (API) to use their monogram
Feb. 6, 1968 The capital was increased to 12 millions of Yen.
Dec. 26, 1968 A new building for the office and the factory were completed at 2-7-21 Matsushima, Edogawa-ku, Tokyo.
Nov. 1, 1969 10th anniversary
Apr. 1, 1970 The capital was increased to 24 millions of Yen.
Sep. 16, 1971 A forging factory was opened at 1228-4 0ki, Yachimata City, Chiba Prefecture. Then, a pressing plant, a cutting plant and a machining plant were also completed, and it has become possible to manufacture valves throughout from forging to assembling.
Aug. 8, 1972 Became a high-pressure gas type 2 certified factory
Nov. 1, 1974 The capital was increased to 48 millions of Yen.
Feb. 1, 1976 Established the manufacture factory at 1228-5 Oki, yachimata-city , Chiba Prefecture
Dec. 4, 1978 Shoritsu was approved as minister authorized factory (High Pressure Gas Safetly Law).
Nov. 1, 1979 20th anniversary
May 1, 1981 Succeeded in technical development of Cryogenic Service valves
Nov. 1, 1981 Introduced production system by computer system
May 1, 1986 Succeeded in developing a valve with integral flange
Nov. 1, 1989 30th anniversary
Apr.17, 1992 Opened China Dalian Shoritsu Valves Co., Ltd. to expand business
Aug. 1, 1995 Obtained Quality Management System(ISO 9001) in accordance with The High Pressure Gas Safety Institute of Japan
Aug. 22, 1995 Registered with Japan Accreditation Board
Nov. 1, 1999 40th anniversary
Nov. 1, 2005 Tomozo Kato becomes chairman.
Atsumoto Kato becomes president.
Dec. 25, 2005 Established the forging factory and finishing plant at 1228-5 Oki, yachimata-city , Chiba Prefecture
May 1, 2007 Reconstruction of total computer production system
Nov. 1, 2009 50th anniversary celebration at Imperial Hotel Tokyo
Apr. 17,2012 China Dalian Shoritsu Valves Co., Ltd. 20th anniversary
Sept. 1,2017 Reconstruction of total computer production system
Nov. 1, 2019 60th anniversary