CADWorx Plant I tab: Setup Size/Spec > Socket Weld 
Setting toolbar: Socket Weld
Specifies the socket welded fitting mode for hub-based components, and sets the mode in the CADWorx Plant Setup. Dimensions and engagement properties are based on the socket welded section of the specification. To route in socket weld, right-click the pipe component in the Spec View palette, and then select Socket weld Router. For more information, see Draw pipe components.
You can also change the fitting mode in the CADWorx Plant Setup dialog box. For more information, see Setup.