Might it not be more practical to invest in a flight case that you can use and resell than investing in a crate that needs to be torn down and rebuilt, adding to the "iffy-ness" of the structural integrity of the enclosure holding the piano?
A flight case is easier to grab, and will lessen the tendency to throw the package around for it's human-friendly box, corners and edges and HANDLES.

In fact you could rebox the flight case with cardboard if you don't want to advertise.
But insurance for over the replacement cost will be your friend.
Or, join uShip and have someone hand deliver your prized piano to the tech.
Many other ways to go on this.