Viega Press Systems have the most marine approvals in the shipbuilding industry. Viega ProPress® in copper and stainless steel sizes ½" to 4" is the original press joining solution. Viega MegaPress® from ½" to 2" is suitable for use with carbon steel pipe. The Viega SeaPress® system for marine pipe joining applications uses 90/10 copper nickel alloy to withstand the harsh environment of the sea. It is the only copper nickel press fitting with a double-press connection for use in a variety of pipe applications from potable water, to fuel, to fire sprinkler.