Cast iron and ductile iron pipe was long a lower-cost alternative to copper, before the advent of durable plastic materials but special non-conductive fittings must be used where transitions are to be made to other metallic pipes, except for terminal fittings, in order to avoid corrosion owing to electrochemical reactions between dissimilar metals (see galvanic cell).
Had Tony Brady from Benjamin Franklin in today for service on my toilet. This the first time I have needed to hire a plumber. I has very happy with the service I received. My appointment was set from 10am-2pm, and he arrived by 1030. Everything was explained to me, from what was wrong to the billing info. We had a second issue, and still Tony was done within the hour. When he heard that I had an issue when trying to book my appointment, he was empowered and made it right! I will for sure use Benjamin Franklin plumbing again (that is if I cant figure it out by watching youtube!)!!!