This depends on the size and the location of the leak. It depends because a leak on the straight piece of the pipe will differ from a leak on the joint of the pipe. It also depends on the corrosion of the pipe and the extent as to how bad it is.
Cast iron is not threaded, steel pipe is.
Male to female threaded adapters.
Demo a section of the wall.
For supply, it is copper and galvanized iron. For waste, ABS (plastic) or cast iron.
You can recycle a cast iron sink at your local recycling depot. For example, Miller Waste offers citizens to bring their cast iron sink to the depot for recycling for a fee.
Yes, cast iron can be recycled. It is a durable material that can be melted down and reused to make new products. Recycling cast iron helps to conserve natural resources and reduce waste.
No, not necessarily. Most likely the drain has become rotten because of something acidic going into it. Vent pipes usually have a good flow of air in both directions. I would just change the bad waste pipe(s).
1/8" - 10" threaded Cast Iron 11/2" - 15" Copper 1/16 - 10" These are the most common sizes
If it's threaded, yes. Fittings are usually difficult to remove because of rust and build-up on threads.
Waste - Vent - water supplyMaterialsCopper - Cast Iron - plastics
You must break or cut the wall at that point. No other option
A cast iron toilet flange adapter is used to connect a toilet to a cast iron pipe. It serves the purpose of providing a secure and watertight connection between the toilet and the pipe. The adapter helps to ensure proper alignment and stability of the toilet on the cast iron pipe, preventing leaks and ensuring efficient waste removal.