The Producer Price Index for copper tube and fittings was up 19% month-over-month (up 4.7% in the last update) and was up 98.9% year-over-year (up 70.9% Y/Y last month).
Steel prices are at an all-time high. We have seen a 14% increase already this year (malleable iron and welded nipples) with another 7% expected in Q3 2021.