Product Name: Customized Forged Blind Flanges
Type: Blind Flange with Testing Hole
Standard: ASME B16.47 Series A
Material: ASTM A105N
Size: DN1500
Pressure Rating: Class 300 LB
Sealing Face: Raised Face (RF)

Source: https://www.landee.cn/astm-a105n-blind-flanges-asme-b16-47-a-dn1500-cl300-rf.html