... steel, carbonsteel aluminum, bronze, 304L, 316L, and other alloy.carbon seep aluminium, strengthen polypropylene, strengthen nylon6, strengthen ... , HYPAK filling has lower pressure reducing and higher efficiency, and liquid in layer has good distributingc. ... steel, carbonsteel aluminum, bronze, 304L, 316L, and other alloy.carbon seep aluminium, strengthen polypropylene, strengthen nylon6, strengthen ...