Product Name: ASTM A182 F316 Weld Neck Flanges (WN Flange)
Standard: ASME B16.5
Material: ASTM A182 F316
Size: DN50
Pressure: Class 150 LB
Schedule: SCH 160
Sealing Facing: Raised Face (RF)
Source: https://www.landee.cn/astm-a182-f316-wn-flanges-asme-b16-5-dn50-2-in-cl150-rf.html