Product Name: ASME B16.47 Series B Blind Flange
Standard: ASME B16.47 Series B
Material: Carbon Steel ASTM A105
Size: 42 Inch, DN1050
Pressure: Class 150 LB, PN20
Surface: Black Painting
Facing: FF (Flat Face)

Source: https://www.landeeflange.com/asme-b16-47-series-b-blind-flange-astm-a105-42-in-cl150.html