Socket Weld Flange Raised Face 1/2 in Nominal Pipe Size Flanged x Socket Weld 3 3/4 in Flange Outside Diameter 1/2 in Flange Thickness 3 3/4 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 1/2 in Bolt Hole Diameter