Plumbing
Pipe Fire Hazard Wall Green 3m
While not as sturdy as solid concrete, iron constructions have high structural integrity, requiring fewer support pillars.
Drops when destroyed
Iron× 1-2
Short Iron Pipe× 1
Where to find (2 POIs)
The Wright Residence (tier 4), Bob's Boars & Carl's Corn (tier 3).
Points of interest built with this block (any of its variants), the highest tiers first, from the game's prefab files.