Ihara Science is a company which applies science for “optimum piping” for all fluids in all industries. Of course, we make optimal fittings and valves for this purpose. Since fittings and valves are part of piping, we pride ourselves on being a “scientific manufacturer”, seriously pondering how we can further improve the flow of fluid.


We design piping, including processing, assembly and maintenance as well. We not only seek and consider what is “optimum” from various perspectives but also properly put it into shape and provide. Although people tend to think of it as “just piping,” we work on establishing piping. With such obsession and pride, we provide “optimum piping” to customers.


The wisdom and technology of Ihara Science turns your problems such as cost reduction (reduction in material costs and man hours), sales expansion (stock reduction and piping optimization) and so on to solutions.

Reduce the quantity of fittings and reduce material costs.

Material selection through a reduction in connecting process, quality improvement and usage is achieved.
By reducing material costs, we provide low-cost and high quality piping systems.

Introduction of custom fittings

Integrate plural fittings and valves (adaptorless, connectorless and so on)

Introduction of long fittings

Bend tube and set fitting (welding)