straight staircase / metal frame / metal steps / without risers
lateral stringer, precast, metal railing
Double straight/winder structures layout. Patented stair system.
STRUCTURE: Coated double structures with “Z” or “I” shape (th. 8mm)
TREADS: Coated metal sheet, (th. 10mm)
RAILING: Fixed on step or on structure’s side
Sample stair displayed: “I” shape with special railing made of R5 posts and R7 handrail