PURPOSE: To safely and surely fed or supply molten metal without bringing the molten metal into contact with the air by connecting a holding surface for molten metal to a forming machine consuming the molten metal with a molten metal feeding pipe and arranging a molten metal feeding pump on the way of a connecting pipe.

CONSTITUTION: In molten metal feeding pipes 1, 3, 4..., heat insulating means and heating means are arranged and molten metal feeding pumps 32a, 32b... are constructed by assembling these molten metal feeding pipes in vertical and horizontal directions, and pressure reducing means by inert gas are connected at the upper parts of the pipes. The vertical molten metal feeding pipe 4 is inserted below the molten metal surface, and by exhausting inert gas from the upper parts of the pipes 4 and 3 as shown with the arrow mark 33, the molten metal is ascended in the pipe 9 as shown with the arrow mark 34, and is descended in the pipe 3 through a connecting pipe 5 by gravity and caused to flow into the molten metal feeding pipe 1. Successively, by exhausting inert gas from the upper part of pipes 6, 7, 9, 8, as shown with the arrow marks 36, 37, the molten metal is caused to flow as shown with the arrow marks 39, 40, 41, 42, and the molten metal descended as shown with the arrow mark 40 can be supplied into the forming machine and the molten metal fed as shown with the arrow mark 42 can further be fed and supplied in order.