Tokai Concrete Industries, Co., Ltd.
Corporate brand
UnclaimedJapanese manufacturer of concrete poles, piles, precast concrete and civil-engineering products, based in Inabe, Mie.
Last updated September 27, 2026
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Overview
Tokai Concrete Industries, Co., Ltd. (東海コンクリート工業株式会社, often abbreviated TCON) is a Japanese manufacturer of concrete products for infrastructure, construction and civil engineering. The company was established in August 1954 (Showa 29) in Minato Ward, Nagoya, with capital of 60 million yen, for the primary purpose of producing concrete poles for use by Chubu Electric Power. Its promoters included Chubu Electric Power and Onoda Cement (today Taiheiyo Cement). Production of concrete poles and concrete piles began at the Nagoya plant in April 1955. Over the following decades the company expanded its product range and production base. It built the Mie Plant in what is now Inabe City, Mie Prefecture, in 1969 and began manufacturing concrete piles there. In 1971 it started producing and selling PHC piles under technology provided by Nippon Concrete Industries. A large precast concrete (precon) plant was completed at the Mie Plant in 1974, followed by GRC (glass-fibre reinforced concrete) equipment in 1976 and CFRC (carbon-fibre reinforced concrete) equipment in 1989. In 2004 the head office function moved to Inabe City, Mie Prefecture, and the sales function to Nishi Ward, Nagoya; pole production was consolidated into the Mie Plant, which then produced both poles and piles. Today TCON's product lines include pole products for electric, communication and traffic-signal lifelines; pile products for foundations; building products (precast members manufactured in the factory for assembly and installation on site); civil-engineering products such as undergrounding products and PCF wall parapets and embedded formwork; and Coretrell, a chemical agent that removes dark discoloration from stone and concrete surfaces by blocking photosynthesis and killing lichens and blue-green algae. The company also offers foundation construction, investigation and diagnosis of concrete structures, repair of concrete structures, and investigation and repair of exterior wall tiles. The company is headquartered in Inabe, Mie, Japan, and operates primarily in the Japanese market. It holds ISO 9001 certification and has obtained PC member quality certifications from the Prefabricated Construction Association of Japan, including N certification in 2021 and H certification in 2025 — described by the company as the first H certification in the Tokai area. It has also pursued smart-factory initiatives at its new plant and received recognition as a Health and Productivity Management Excellent Corporation (健康経営優良法人) for 2026.
History
Tokai Concrete Industries was established in August 1954 (Showa 29) in Minato Ward, Nagoya, with capital of 60 million yen. Its founding purpose was the manufacture of concrete poles for use by Chubu Electric Power, and its promoters included Chubu Electric Power and Onoda Cement (now Taiheiyo Cement). In April 1955, the Nagoya Plant began manufacturing and selling concrete poles and concrete piles. The company obtained construction business registration in August 1957, and increased its capital to 120 million yen in December 1961 and to 180 million yen in December 1964. In November 1969, capital was increased to 300 million yen. In December 1969, the Mie Plant was built in what was then Daian-cho, Inabe District, Mie Prefecture (now Inabe City), and concrete pile production began there. In July 1971, under technology provided by Nippon Concrete Industries, the company began manufacturing and selling PHC piles. In June 1974, a large precast concrete (precon) manufacturing plant was completed at the Mie Plant. In July 1976, GRC (glass-fibre reinforced concrete) manufacturing equipment was installed at the Mie Plant. In April 1979, Tokai Pile Sales Co., Ltd. (now Tokai Concrete Shoji Co., Ltd.) was established with capital participation. In November 1987, the Nagoya Plant received the Nagoya Regional Director of the Ministry of International Trade and Industry Award as an excellent factory for implementing industrial standardization. In July 1989, CFRC (carbon-fibre reinforced concrete) manufacturing equipment was installed at the Mie Plant. In November 1992, the Mie Plant received the Chubu Regional Director of the Ministry of International Trade and Industry Award as an excellent factory for implementing industrial standardization. In March 1999, the Mie Plant obtained ISO 9002 certification. In June 1999, sales of Coretrell began. In June 2000, the head office and Nagoya Plant obtained ISO 9001 certification, and in March 2002 ISO 9001 was integrated as the 2000 version. In January 2004, the company moved its head office function to Inabe City, Mie Prefecture (where the Mie Plant is located) and its sales function to Nishi Ward, Nagoya, and began operations there; the Nagoya Plant's pole production equipment was consolidated into the Mie Plant, which began simultaneous production of poles and piles. In August 2004, the company marked its 50th anniversary. In May 2006, it obtained a Minister of Land, Infrastructure, Transport and Tourism license for construction business registration. In June 2010, it obtained ISO 9001:2008 certification. In November 2011, it obtained individual approval for concrete split poles. In February 2016, rebar processing equipment was installed at the Mie Plant. In February 2018, it obtained ISO 9001:2015 certification (design, manufacture and sale of concrete pole products). In April 2021, the company obtained N certification under the PC member quality certification system of the Prefabricated Construction Association of Japan. In January 2023, the pole plant was renewed. In January 2025, it obtained H certification under the PC member quality certification system of the Prefabricated Construction Association of Japan, described as the first in the Tokai area. In April 2025, it released 3-part split poles (20E, 24E) developed for power transmission and distribution with a crack test load of 15 kN, having obtained type approval from Chubu Electric Power Grid. In April 2026, it obtained certification as a Health and Productivity Management Excellent Corporation 2026 (small and medium-sized enterprise category) and discontinued the Nagoya office telephone number.
- 2016
Rebar processing equipment installed at the Mie Plant.
- 2011
Obtained individual approval for concrete split poles.
- 2010
Obtained ISO 9001:2008 certification.
- 2006
Obtained Minister of Land, Infrastructure, Transport and Tourism license for construction business registration.
- 2004
Head office function moved to Inabe City, Mie Prefecture, and sales function to Nishi Ward, Nagoya; Nagoya Plant pole production consolidated into Mie Plant, which began simultaneous pole and pile production.
- 2004
Company marked its 50th anniversary.
- 2002
ISO 9001 integrated as the 2000 version.
- 2000
Head office and Nagoya Plant obtained ISO 9001 certification.
- 1999
Mie Plant obtained ISO 9002 certification.
- 1999
Sales of Coretrell began.
Products and positioning
Regional Japanese concrete-products manufacturer serving utility, construction and civil-engineering customers, with a focus on quality-certified precast and foundation products.
Pole products
Concrete poles used for electric, communication and traffic-signal lifeline facilities.
Pile products
Piles driven into the ground to support structures.
Building products
Precast building products manufactured in the factory for assembly and installation on site.
Civil-engineering products
Centered on undergrounding products, also providing PCF wall parapets and embedded formwork.
Coretrell
A chemical agent that, when applied, blocks photosynthesis and kills lichens and blue-green algae, removing dark discoloration from stone and concrete surfaces.
Split poles (3-part poles)
Poles that can be transported and installed in narrow locations; 20E and 24E types developed for power transmission and distribution with a crack test load of 15 kN.
Hyper-MEGA construction method
A latest-generation, final-model pre-boring high-support-capacity construction method.
COPITA pre-boring pile method
A pre-boring pile method conforming to the Specifications for Highway Bridges and Commentary (March 2012).
Sources5 sources
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