I will start at the beginning: I ordered the Komatsu Nov. 2012 and four weeks later I received a well packed carton with all the parts in it.
The manual is give in .pdf-form and need to be printed.
The metall parts are made of cold rolled steel.
and at the most parts it is spot-welded.
All weldings are good connected even you can finde holes, which need to be filled later before painting.