Product Name: ASTM A105 Figure 8 Blind Flange
Type: Figure 8 Blind Flange/Spade Flange
Design Standard: ASME B16.48
Material: ASTM A105, Forged Carbon Steel
Size: 4 Inch, DN100
Pressure Rating: Class 150 LB, PN20
Facing Type: Flat Face
Surface Treatment: Black Paint

Source: https://www.landeeflange.com/astm-a105-figure-8-blind-flange-asme-b16-48-4-inch-150-lb.html