This 1932 chassis is built from American Stamping stamped frame rails.
They were shipped in by truck along with the front cross member.

All rails have square nuts welded to the inside of the frame rails.  These nuts are held in place with a special indexing tool to center it in the hole.  Stock chassis (fenders) require additional holes and running board brackets.

The frame rails and the boxing plates are beveled for welding.  The whole frame is stitch welded and alternating side to side and end to end.  Notice the "V" that was created by beveling the frame rails and boxing plates.

The tubular center section is welded in another jig then welded in place. All pieces are computer bent and all straight pieces are "CNC" end milled instead of using a notching tool, this assures a perfect fit every time. The rear cross member is "index drilled" on the "CNC" machine for proper alignment of the holes.

The frame rails are removed from our boxing plate jig that is index 13 times across.  Here the finish welding is done on the hard to reach places.

From there the frame rails go on our suspension jig to have the suspension brackets welded in at ride height.  This is very important to maintain assure the best possible ride.  

Because of trade secrets we did not show our boxing, suspension and cross member jigs.

This is a finished Hi-Boy Frame

Notice how low to the ground this frame is and all the suspension and steering rods will be parallel to the ground "at ride height".