a manufacturer specializing for ship, industrial of flange products
Socket Welding flanges have counter bore is slightly larger than the Outer Diameter of the matching pipe, allowing the pipe to be inserted.
A restriction is built into the bottom of the bore, which acts as a shoulder for the pipe to rest on, and has the same ID of matching pipe.
Since socket-welding connections are not as strong as butt-welded joints, the use of this type of flange is almost always confined to NPS 4 (DN 100) and smaller sizes, and to the lower pressure ratings. Its chief advantage lies in the ease of preparation and installation.