From Wikimedia Commons, the free media repository
English: Steam boilers that have flue tubes to carry combustion gases through a tank of water, in contrast Watertube boilers.
This category has the following 12 subcategories, out of 12 total.
- ► Bagnall boilers (1 C, 9 F)
- ► Cochran boilers (10 F)
- ► Omnical boilers (13 F)
- ► Robertson boilers (1 F)
- ► Scotch marine boilers (1 C, 44 F)
Media in category "Fire-tube boilers"
The following 22 files are in this category, out of 22 total.