Slip-on: The Slip-on flanges are attached by welding inside as well as outside. These flanges are of forged construction.
Socket Weld: The Socket weld flanges are welded on one side only. These are used for small bore lines only.
Screwed: The Screwed-on flanges are used on pipe lines where welding cannot be carried out.
Lap Joint: The Lap Joint flanges are used with slub ends. The slub ends are welded with pipes & flanges are kept loose over the same.
Welding Neck: The welding neck flanges are attached by Butt Welding to the pipe. These are used mainlyfor critical services where the weld joints need Radiographic Inspection.
Blind: The blind flanges are used to close the ends which need to be reopened.
Reducing: The Reducing flanges are used to connect between larger and smaller sizez without using a reducer. In case of reducing flanges, the thickness of flange should be that of the higher diameter.
Integral: Integral flanges are those, which are cast along with the piping component or equipment.
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