Daiwa Steel Tube Industries Co., Ltd.

Founder Tomeichi Nakamura established Nakamura Maki Pipe Manufacturing Works in Taisho-ku, Osaka, and began manufacturing and selling welded steel tubes.

Founder Tomeichi Nakamura established the Nakamura Pipe Manufacturing Factory in Taisho-ku, Osaka. : Started manufacturing and sales of welded steel tubes

The works was incorporated and renamed Daiwa Steel Tube Industries Co., Ltd.

The factory was renamed as a corporate organization to Daiwa Steel Tube Industries Co., Ltd.

Matsuichi Nakamura became president.

President Matsuichi Nakamura appointed

The first line of the patented Daiwa Z Process, a continuous manufacturing method for hot-dip galvanized steel tubes, was installed at the Sakai Plant. Sales of Post Zinc began.

“Daiwa Z Process” is the world's first patented continuous hot-dip galvanized steel tube manufacturing method, and the first line was installed at Sakai Plant. : Started selling "Post Zinc"

Headquarters moved to Nakanoshima, Kita-ku, Osaka City. The second Daiwa Z Process line was installed at the Sakai Plant.

Headquarters moved to Nakanoshima, Kita-ku, Osaka City The second line of “Daiwa Z Process” was installed at Sakai Plant.

Unity Inc. was established.

Unity Inc. established

The Kanto Plant was completed in Tochigi Prefecture as a production base for eastern Japan.

Kanto Plant in Tochigi Prefecture completed as a production base for East Japan

Shinichiro Nakamura became president. Daiwa Steel Tube Industries Co., Ltd. and Unity Inc. acquired ISO 9001 certification.

Shinichiro Nakamura appointed as President; Daiwa Steel Tube Industries Co., Ltd. and Unity Inc. acquired ISO9001 certification

Sales began for Perfect Post Zinc, hot-dip galvanized steel tubes coated on both the inside and outside. Super Light 700, STX700, and STXR700 were registered in the Ministry of Land, Infrastructure, Transport and Tourism’s New Technology Information System (NETIS).

Sale of "Perfect Post Zinc" inner and outer surface hot-dip galvanized steel tubes : Super Light 700/STX700/STXR700 registered at the Ministry of Land, Infrastructure, Transport and Tourism’s “New Technology Information System (NETIS)”

Certification under the new JIS Mark labeling system was obtained.

Acquired certification to label products with the new JIS mark.

700 N-class high-tensile structural carbon steel tubes were certified as building materials designated by the Minister of Land, Infrastructure, Transport and Tourism. Headquarters functions were consolidated at the Tokyo Headquarters, and eastern and western sales headquarters were established in Tokyo and Osaka.

700N-class structural high-tensile carbon steel tubes certified as a building material designated by the Minister of Land, Infrastructure, Transport and Tourism : Headquarters functions consolidated into Tokyo Headquarters : East and West Sales Headquarters established in Tokyo and Osaka

Unity Inc. was renamed DSTI Holdings Ltd. Perfect Post Zinc received technical review certification from the Public Works Research Center.

Changed the name of Unity Inc. to DSTI Holdings Ltd. : Perfect Post Zinc acquired the Construction Technology Examination Certification from the Public Works Research Center.

Perfect Post Zinc was registered in the Ministry of Land, Infrastructure, Transport and Tourism’s New Technology Information System (NETIS). Headquarters moved to Sakura, Tochigi Prefecture, and a Tokyo Sales Office opened in Chuo-ku, Tokyo.

Perfect Post Zinc registered at the Ministry of Land, Infrastructure, Transport and Tourism's “New Technology Information System (NETIS)” : Headquarters relocated to Sakura City, Tochigi Prefecture : Tokyo Sales Office established in Chuo-ku, Tokyo

DSTI Holdings Ltd. merged into Daiwa Steel Tube Industries Co., Ltd., which began manufacturing and selling steel conduits.

Daiwa Steel Tube Industries Co., Ltd. merged with DSTI Holdings Ltd. : Started manufacturing and sales of steel conduits

A Hazard Simulation Training Center was established at the Head Office Plant.

Hazard Simulation Training Center established at the Headquarters Plant

The STX Friends Association was founded.

First STX networking event