｜ HOME ｜ Products handled ｜ Achievements list ｜ Unit price list ｜ Company information ｜ Dam construction work <Sales destination> Obayashi Corporation / Kajima Corporation / Shimizu Corporation / Taisei Corporation and many others Ultra-high voltage tower construction work <Sales destination> Kanden Engineering Corporation / Kinden Corporation / Kurihara Kogyo Co., Ltd./Sumitomo Densetsu Co., Ltd. and many others Bridge Anchorage construction work <Sales destination> Obayashi Corporation / Kajima Corporation / Shimizu Corporation / Taisei Corporation and many others With strict quality control, we have earned the trust of many clients. We deal with a total of more than 300 major construction companies and their affiliates. Our company was established by Sadao Komamine with the aim of establishing modern steel sales by making use of his many years of experience in steel sales. Since its establishment, the company has been manufacturing, selling, and leasing unique products developed by itself for concrete dam construction, ultra-high voltage power transmission construction, and large bridge construction that are constructed all over the country. Sales partners are Ministry of Land, Infrastructure, Transport and Tourism, Ministry of Agriculture, Forestry and Fisheries, (Germany) Water Resources Organization, Honshu-Shikoku Bridge Public Corporation, Civil Engineering Department of each prefecture, Kansai Electric Power, Chubu Electric Power, Chugoku Electric Power, Shikoku Electric Power, Kyushu Electric Power We are a major contractor and related companies involved, and we deal with a total of more than 300 companies, including 150 sales destinations and 180 suppliers. We manufacture stable parts with the needs and support of each site. To maintain safety, we always carry out strict quality control. Concrete has the property that heat is generated by the hydration action of cement after casting and the temperature rises rapidly. The magnitude of this heat of hydration varies depending on the type of cement, amount used, thermal characteristics of concrete, outside air temperature, etc., but it may rise by about 30 ° C from the temperature of concrete placement. Especially in the case of mass concrete such as a dam, the internal temperature is not dissipated to the surface, so the temperature becomes quite high and the temperature difference between the inside and the outside becomes very large. For this reason, tensile stress is generated on the surface of concrete, and if the tensile stress exceeds the degree of tensile stress of concrete, cracks and other fractures of concrete will occur. In addition, since concrete with such a large temperature difference undergoes a large volume change until it becomes concrete at a constant temperature over a long period of time, cracks occur near the foundation rock that cannot be expanded or contracted due to being restrained by the rock. , The unity of the dam lacks a series, and it becomes an extremely big problem in terms of safety. Furthermore, before storing water, the dam needs to bring the concrete to the final stable temperature and grout to prevent water leakage from the vertical joints and horizontal joints. For these purposes, pipe cooling must be performed to cool the heat of hydration, and seam grout piping must be used to make seam joints to stabilize the concrete. We manufacture a wide variety of piping materials that meet the above objectives, but the expansion joints and various parts introduced on this website have been used for many years based on the needs of each site, as well as related ministries and agencies, as well as dams. It was completed with the tremendous support of everyone in the construction industry. We manufacture it after strict quality control and inspection, so please use it with confidence. Main Menu Products handled Telescopic coupling series Cooling pipe and grout pipe Seam grout material Dam formwork bolt Delivery / Delivery record list Delivery record Delivery record Unit price list Company About us Greetings from the president Company Profile Department introduction Main sales destination Taiyo steel machine Co., Ltd. Yubinbango533-0033 Osaka Higashi-Yodogawa-ku, Higashinakashima 2-chome, 8-6 TEL. 06 (6325) 0678 FAX. 06 (6325) 0748 Copyright © 2021 TAIYO-KOUKI Co., Ltd. All rights reserved.