Some sets of refractory bricks, i''m afraid I have no idea why they built in such a way. It looks like they go on the sides of the furnace at a high level. http://www.aditnow.co.uk/Photo/Reline-2000_105186/
This photograph is by christwigg and was uploaded April 1st 2016. © christwigg please do not copy or distribute without prior express permission.
You can close this window to return to the main site.