Product Name: ASTM A182 F55 Slip-On Flange
Standard: ASME B16.5
Size: 3 Inch
Pressure: Class 150 LB
Facing: RF (Raised Face)
Material: ASTM A182 F55 (Super Duplex Stainless Steel)
Source: https://www.landee.cn/astm-a182-f55-slip-on-flange-asme-b16-5-3-inch-cl150-rf.html