Our small-diameter steel pipes occupy a significant market share.
Small pipes are our mainstay products.

Since our founding in 1949, Nishiyama Seisakusho has contributed to the growth of the drawn steel pipe industry as a drawing manufacturer of small-diameter steel pipes.
In particular, Nishiyama excels at small-diameter steel pipes with an outer diameter of 10 mm and less. We possess a significant market share for pipes with an outside diameter of 6 mm and less.
Striving to achieve “smaller and thinner pipes with even higher precision,” Nishiyama will continue to create products which respond to customer needs through our superior technical capability and pioneering creativity.