Product Name: ASTM A105N Weld Neck Flange
Materials: ASTM A105N + Alloy 625 Weld Overlay
Standard: ASME B16.5
Size: 16 Inch, DN400
Facing: Raised Face
Surface Treatment: No

Source: https://www.landeeflange.com/raised-face-wn-flanges-asme-b16-5-a105n-alloy-625-16-in.html