... ,ANSI Carbon Steel A 105 ANSI Blind Flange:Specifications:Surface coated with unti rust oil,hot galvanizingSize: 1/2''-72''Material: ... professional manufacturer and exportor of flange,valve and pipe fitting.With the rich experience of making and exporting flanges,our costomers ... are from all over the world,such as American,Germany,Italy,Spain,Canada,Brazil ...