Product Name: Carbon Steel Plate Flanges
Type: Plate Flange
Design Standard: DIN 86044
Material: ASTM A105, Forged Carbon Steel
Size: 22 Inches, DN550
Surface Treatment: Black Painting
Source: https://www.landeeflange.com/carbon-steel-plate-flanges-din-86044-a105-22-inch-dn550.html