Plumbing
Pipe Small Wall Corner Green
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 (4 POIs)
Vanity Tower (tier 5), Bob's Boars & Carl's Corn (tier 3), Pass-N-Gas Plaza (tier 3), Ma Baker & Sons Bakery (tier 2).
Points of interest built with this block (any of its variants), the highest tiers first, from the game's prefab files.