Since our establishment in 1948, we have contributed to Social through the manufacture and sale of tubes . Based on our management philosophy of "our mission as a leading pipe company is to contribute to Social by supplying superior products and living up to the trust of our customers," we are working to improve our corporate value.

Our progress can be broadly divided into three phases.

The first phase was the period of growth and expansion of our domestic business from our founding until 1990. In response to the robust expansion of domestic demand in Japan, we set up production bases one after another in areas of demand (demand-based production system) and established a nationwide sales network that included Maruichi Kohan, thereby establishing ourselves as No. 1 in the industry.

The second phase was the period of overseas expansion from 2000 to 2020. Amid a decline in domestic demand due to factors such as a declining birthrate and aging population, and the transfer of automobile production overseas, we promoted global expansion, primarily in Asia and North America, where market growth was expected, and provided maximum value to customers by providing high-quality products locally in a timely manner.