Socket Weld Flange Raised Face 1 in Nominal Pipe Size Flanged x Socket Weld 4 7/8 in Flange Outside Diameter 9/16 in Flange Thickness 4 7/8 in Overall Length Steel Black Coated Class Class 300 For Pipe Schedule 80 725 psi Maximum Operating Pressure 725 psi Max Steam Pressure 80 Degrees to 780 Degrees F Number of Bolt Holes 4 5/8 in Bolt Hole Diameter