Pipe connection

Pipe connection is varied, the commonly used have Butt weld, Flanged, Threaded, Socket weld, Glued, Brazed and Grooved end.

You assign connection types in the Connector Properties dialog box as you build fittings content using the Content Builder (see Adding Connectors to a Parametric Fitting). Assigned connection types are then displayed on the Connection Assignments tab of the Pipe Layout Preferences dialog box.

Unthreaded Connections are not threaded, must be either welded or bolted together. The following table shows the different orientations of pipe connection types:

Butt weld:
A butt weld is two pipes lined up with one another and welded along the contact edge to create a seal.

Butt weld
No extra objects are added.

Fittings and pipe segments connect directly to each other.

Flanged All types
A flange is a plate or ring that is attached to a pipe. Two flanged pipe then create a tight seal by being bolted together.


Threaded, Socket weld, Glued, Brazed
The pipe is the male fitting and the socket is equivalent to a female fitting. To provide a tight seal it is best to line the outside of the pipe and the inside of the socket with a sealant.

Socket welds require a pipe and socket connection.

Grooved end
A grooved end fitting has a groove or shoulder along the edge. This fittings groove allows for a seal without the need for welding.



The Piping domain includes a connection type called Same Connection. When Same Connection is configured for a pipe object that is attached to a hub, connector 1 inherits the connection type of the connection type on connector 2 of the attached hub.

Weled steel pipe specification, Standard and identification

Welded steel pipe (steel pipe manufactured with a weld) is a tubular product made out of flat plates, known as skelp, that are formed, bent and prepared for welding.


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