FRAMSTAELLNINGSFOERFARANDE FOER EN ROERKOKILL MED REKTANGULAERT RESPEKTIVE KVADRATISKT TVAERSNITT

摘要

A round copper or copper-alloy tube is internally coated with a relatively thick nickel or nickel-alloy layer and formed into a tube of rectangular or square-shaped cross section; the tube or cut-off sections thereof will serve as molds for continuous casting.