Our apartment building had to change out the boiler and all the piping which meant we had to redo the steel catwalk, steel staircase and pipe railings completely as the new unit was sized very differently. One plumber we spoke with recommended city steel products as they had worked with them previously. When they met with us they knew exactly what was needed and worked with our architect and engineer closely on the design and installation process, even submitting detailed shop drawings to all the trades so everyone was coordinated making the project much smoother. The finished steel catwalk came out great and looks t0o good to be in a boiler room. We will certainly be using them for our next building and suggest you make life easier and do the same if you have the need.