Decorated brass tube with a thin-walled thickness and many concave decorative veins on its outer surface is very difficult to produce by using common investment casting.Because of the low speed flow of molten brass and high gas evolution

great many shrinkage cavity and gas hole can be generated in the brass tube.By centrifugal pressurizing technology

as a result of centrifugal force strongly driving liquid copper to promote it filling and feeding rapidly

shrinkage porosities in the brass tube can be eliminated or decreased.Meanwhile

liquid copper can strongly drive and squeeze gas in the cavity accompanied with centrifugal force effects.So the gas in the cavity can be exhausted more easily to greatly reduce gas hole in the brass tube.