Hot-dip galvanized steel has been effectively used since the mid 1800's to prolong the life of building and machine components. Hydra-Spread uses galvanizing to protect the end-gate, push-gate and beater pan of selected models. Immersing the welded assembly in molten zinc ensures total protection. Because the process takes place at 700 degrees F the zinc is literally welded to the steel. Inside surfaces of structural tubes, seams, overlapped components—all are completely covered by a protective layer of zinc. All of this protection comes at a small price. Because the metal is heated to 700 degrees F there is some, unavoidable, shape distortion in the sheet metal components—a small price for years of extra component life.