Plastic pipework

Okay kiddo, imagine you want to build a pipeline - a big straw that can carry water or gas or other things from one place to another. Now, we can build this pipeline out of many materials like steel, copper, or even plastic.
Plastic pipework is made from special types of plastic that can withstand water flow, heat, and pressure. These plastics come in long tubes that look like long straws.
When you want to make the pipeline, we first cut the plastic pipes into the length we want. These pipes have special connectors that can fit into each other quickly and easily, like when you link your toy blocks together. This creates a long, strong chain of pipes that can go in any direction- even up and over if we want to go up a hill or a building.
Once we've connected these pipes, now we can use the pipeline to carry things like water, gases, or other liquids from one place to another. Just like a straw lets juice flow from a glass into your mouth, the pipeline lets the water or gas flow from one place to another.

That's it, kiddo. Simple as that!