Face to Face Dimensions:ANSI B16.10
Flange end Dimension :ANSI B16.5
Butt Welded Dimensions:ANSI B16.25
Design and Manufacture:API 600
Pressure Test:API 598
Main material: C95800,C95500,C95200,C95300,C95600,C61900,C63200, ect. http://www.pressure-valves.com