Based on the following video we need a full engineering schematic for building the same steamer.
We need dimensions on where to weld in the tubes to the drums and lengths for all pipes and part numbers from grainger.com on the exact fittings to buy.
We need to be able to take these schematics to a machine shop to have everything cut and welded and then we'll assemble it at our facility.
I have Autodesk Inventor, if you use that to design it that's preferred but not required. The most important thing is schematics that I can print out.
I prefer the setup that's shown in this video but additional information on similar systems can be seen at: