Forged Steel Blind flanges also known as the blind, it is called the flange cover.Blind Flange Is the middle of the flange without holes, for sealing pipe plugs.Blind Flangesare made with forged carbon steel or stainless steel and alloy steel, etc. Flange is widely used in such basic projects as chemical engineering, construction, water supply, drainage, petroleum, light and heavy industry, freezing, sanitary, plumbing, fire protection, electricity, aerospace and shipbuilding. Type: DIN2527 Pressure: PN6 to PN64 Material: Carbon steel or other required material Surface: Original Color, Galvanizing or Paiting as clients requirements.