![Image](https://forums.factorio.com/images/ext/7eca82413c2bbbb9f48a65412d265417.png)
Top is normal pipe to ground
Next is a long pipe to ground, which costs proportionally more
Then on the bottom there are two new things. The cross in the middle is a "pipe to ground tap", which always connects in all four directions above AND below ground. And to the south and west of it are the new one-tile mostly-underground pipes, which will be repeatable for unlimited distance, with the caveat that you can't build anything on top of them.