Suncall Corporation

Sadao Oiko

Katsuhiro Imasaki

Hiroyuki Furukawa

Toshitsugu Ookubo

An outer pipe and an inner pipe are formed by drawing. Inner pipe is inserted into outer pipe and a metal core is inserted into inner pipe From this state, drawing is performed so that outer pipe presses tightly against inner pipe Metal core is pulled out, resulting in a two-layer clad pipe Alternatively, a two-layer clad pipe can also be made by drawing outer pipe and inner pipe without inserting metal core

Growing community of inventors

Kyoto, Japan

Sadao Oiko