Manufacturer may vary by location, Wrot copper, End Connections: FTG x Sweat, Plain end, Unaffected by sunlight, has no special storage requirements and cannot produce toxic fumes in a fire, Nonflammable, Biostatic and inhibits bacterial growth on its surface, Lightweight, strong and corrosion resistant, ANSI Standards: ASME B16.22, ASME B16.50, MSS SP104