Hollow metal product interior filling device and method

The invention relates to a hollow metal product interior filling device and a filling method, and belongs to hollow metal product interior filling devices in the building material home furnishing industry. The device is composed of a metal shell, a metal keel, a metal bottom empty box, a metal bottom plate, injection holes and a metal hole cover. The metal shell can be processed into various needed shapes, the bottom empty box, the metal bottom plate and the metal shell are welded into a sealed hollow metal product through the metal keel according to the structure, the sealed hollow metal product is supported and divided into spaces of different sizes through the metal keel, the injection holes are formed in the metal bottom plate according to the spaces divided by the metal keel, and polyurethane (PU) is injected into the sealed hollow metal product through the injection holes. The hollow metal product interior filling device is suitable for various hollow metal products of metal surface process construction