Product Name: ASME B16.48 Figure 8 Blind Flange
Type: Figure 8 Blind Flange/Spade Flange
Standard: ASME B16.48
Material: ASTM A105
Size: 4 Inch
Pressure Rating: Class 150 LB
Facing Type: Flat Face (FF)
Surface Treatment: Black Coating

Source: https://www.landee.cn/asme-b16-48-figure-8-blind-flange-a105-4-in-cl150-lb-ff.html