Wolf this might make a difference for skyscrapers and bridges but it won't have any effect on our small parts because the actual cost of the steel in a slug is minuscule compared to the value added and a 25% hike will only amount to a tiny fraction of a penny. There is so much volatility in the price of steel anyway that you simply won't notice it at the retail end. See this graph: https://fred.stlouisfed.org/series/WPU101707
Now if this starts a trade war then we could see some serious impacts on our standard of living.
If your suppliers are warning you of price hikes it's because they think this is a perfect excuse to raise prices across the board but their costs of production increases will still be negligible. I.E. shame on them.