Hirano Iron Works Co., Ltd.

Quality is fundamental! Pursuing reliable ultra-precision parts processing.

Hirano Iron Works Co., Ltd. manufactures cylinder and piston machining for jet hammers, machine tool parts, drill machine parts, and more. Our strength lies in our ability to perform integrated production using equipment such as material cutting, NC lathes, internal and external grinding machines, thread rolling machines, and NC milling machines. We can accommodate everything from small-batch production of various types to large-scale production using robots, and we pursue ultra-precision machining technology that can achieve roundness and cylindricity in microns and surface roughness of 1.5S or less.