Steel prices are at an all-time high. We have seen a 7% increase already this year (malleable iron and welded nipples) with another 7% expected in Q2 2021.
The producer price index for copper tube and fittings was up 5.1% month-over-month (up 4.8% in the last update) and was up 20.4% year-over-year (up 16.9% Y/Y last month).