I am asking anyone for help on this subject. I want to put a washer and dryer and sink in a spare room behind the kitchen in my house. The plumbing and gas lines are easily accessible (I pulled down a wall to get rid of rotting insulation and it is still open). I was told that there is a "special" pipe needed for a washing machine by TWO plumbers and that it costs more than regular copper pipe. This runs counter to everything I have seen and feel that they are tying to rip me off. Is this true that there is a "special" pipe for washing machines? Please let me know, since I have sweated pipes in the past I'll do this myself. One thing to note, these are the ONLY two plumbers in town that do residential work. My other problem is the drain line. This is galvanized steel (?) and I have never worked with that. How would I go about adding a drain line for a sink? Is this something I can do myself or should I suck up to one of the two plumbers and have them do the work. Thanks in advance.