Product Item: ASTM A105 Blind Flange
Type: Blind Flange
Standard: ASME B16.47 Series B
Material: ASTM A105
Size: 42 Inch
Pressure: Class 150 LB
Surface: Black Painting
Facing: FF (Flat Face)

Source: https://www.landee.cn/astm-a105-blind-flanges-asme-b16-47-series-b-42-in-cl150.html