steel construction surrey steels rsj steel beams north london 24 hours leadenhall building city of london steel beams surrey steels steel steel frame building construction universal steel beam surrey steels rsj beams london a13 steel london house extension repoussoir universal steel beam surrey steels steel frame building construction a brick extension with bright yellow bright red steel frame in house extension extensive stock universal rsj beams construction steel beam installation leadenhall building city of london a brick extension with bright yellow steel sections connections rsj steel frame building construction bright red steel frame in house extension rsj steel beams north london 24 hours rsj beam fabrication and suppliers construction steel beam installation info the beams 4 plate splice surrey steels steel