Product Name: SS 316L Slip-on Flange
Standard: ASME/ANSI B16.5
Material: ASTM A182 F316L, Stainless Steel SS 316L
Size: 2 Inch, DN50, 50 mm
Pressure Rating: Class 300 LB, PN50
Face: Raised Face

Source: https://www.landeeflange.com/ss-316l-slip-on-flanges-ansi-b16-5-a182-f316l-2-in-cl300.html