Hi, there is an engineering firm in East Lothian that has one.I had the use of it a couple of years ago to roll box section the box was 40 x 40 x 3 and i managed to roll it to 1250 dia. to make cattle feeders.The foreman showed me other sections he had rolled one of them was 50 dia. st/stl looked pretty good to me the other was 50 x 12 flat bar on edge quite a versatile machine for the money.The have been using it for three years without any problems