Cast iron drain pipes have seen several improvements in the past 100 years. Cast iron pipes in the past were known for corroding over time. The manufacturing processes of cast iron pipes have been greatly improved. Stainless steel clamps and rubber gaskets have replaced the molten lead in joining of the cast iron fittings. Cast iron pipes can be ordered online at
. http://www.charlottepipe.com/Default.aspx?Page=CastIron&type=CastIron.