What's the point of having insulated pipes if they're going to freeze and get damaged?
Steps to Reproduce
1. Build an insulated pipe in cold (mine froze at -20F) 2. Pump water through pipe and hold it there (stop flow) 3. Wait for pipe to get damaged (this particular corner pipe got damaged after only about 15 minutes) 4. Curse the game's bad design and frustation since you just spent so much time redoing the pipes to insulated!
This issue has not been confirmed by a developer yet.