Socket Weld Flange Raised Face 1/2 in Nominal Pipe Size Flanged x Socket Weld 4 3/4 in Flange Outside Diameter 7/8 in Flange Thickness 4 3/4 in Overall Length Steel Black Coated Class Class 1500 For Pipe Schedule XXH 3 600 psi Maximum Operating Pressure 3 600 psi Max Steam Pressure 80 Degrees to 780 Degrees F Number of Bolt Holes 4 3/4 in Bolt Hole Diameter