Necromunda Pipes or Zone mortalis pipes, wargaming

This is a set i put together for a board I am building. They are designed so that you can use them as a modular set of pipes or a sewer that you are able to move miniatures through easily. A great way to add to zone mortalis / boarding actions or to spice up the board. 
On my board we treat them as enclosed spaces so you cannot shoot into them but you can shoot through them and within them. It's loads of a fun and a great way to spice up the underhive. 

 
I am using these for my underhive board on youtube @HeresyWargames