Price For: Each Standards: ASTM A-197, ASTM A47, ASME B16.3 and B16.4, UL Listed, FM Approved Max. Pressure: 150 psi@450 Degrees F Fittings Sub-Category: Flanges Saturated Steam Pressure: 150 PSI Body Material: Black Steel Item: Blind Flange Class: 150 Pipe Size: 4" Connection Type: Welded Country of Origin (subject to change): China