Stop in for a cup of coffee

Copper and steel dont mix. Otherwise go for it. As long as no steel touches copper. Copper sink drain in my basement. Original owner used coat hangers to hang stuff to dry,and coat hangers were there when i moved in. Wherever there was a coat hanger,the pipe was corroded through. Thats why there is copper pipe strap and copper nails.
You learned me something today! Thanks..