Buttweld toolbar: Tee 
Command line: RTESW
Places a tee with the branch rolled at a 45 degree angle from the X-Y plane.
Middle
Places the tee at the centerline intersection of the branch and main of the tee.
Up
Rotates the branch of the tee 45 degrees in the positive Z direction.
Down
Rotates the branch of the tee 45 degrees in the negative Z direction.
This command is only available for welded fittings.