Custom Plate Orifice.
Pressure design flange CL150.
Facing, Raised face.
Size: Flange DN40, Outside diameter 83mm.
Bore diameter 12mm at 20'C.
Plate thickness 10mm. 
Material: 316 Stainless Steel. RF 12mm 
Type: Concentric.
Includes documentation. 
More info in photos.
Thankyou.