The attached pic is the shower/bath drain that was roughed in when our house was built in 2006, and I'm trying to figure out what this is & how to use it. I know it's a drain rough-in (duh), and the pipe is metal with a 2" inside diameter and full of concrete (at least at the top of it). I thought most plumbing was PVC, so this metal pipe and the red base is throwing me. Do you suppose this drain pipe is metal and it is metal all the way to where it links up to sewer drainage? Or do you think this metal pipe is just a cap that needs removed somehow to reveal a PCV drain pipe. If the metal pipe is permanent then I guess I'll just need to cut it off at the appripriate height once the shower base arrives.
I will be installing a shower base over the pipe, but I really want to understand what the deal is with this pipe before w begin. Thanks for any input, and yes I am hiring a licensed plumber to run all the water lines...I'm just doing some of the easier things to save some $$$ and to learn.