Originally Posted by
tankist
Today I had a minor crash - lost balance while climbing too slowly on a steep road. I landed on my left side, got a bruise on the left thigh but no other damage. Or so I thought until I noticed a big scratch or crack on top tube. I don't understand how could it happen? The bike is Bianchi Infinito 2016, one month old, no other crashes. All my previous bikes were steel, I had a few of minor crashes, never any damage to the bikes (except scratched saddle in one case).
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Have you considered that the failure of the tube is most likely the cause of your loss of balance & subsequent crash. Take that bike back for a full warranty refund or replacement.