All steel components are made of steel St 37-2; only scale-free (uncoated) material is used. All exposed weld seams are properly ground. All stainless steel parts are made of material number 1.4301; surfaces are ground with 320 grit: all weld seams are executed by tungsten inert gas welding (TIG) and properly ground; the bars have half-circular weld-on caps at the ends; no visible handrail joints, uniform grinding pattern.
A flat steel frame is fitted to mask the floor slab edge and provide a connection to the flooring and ceiling structure. It is fastened to the unfinished floor with the help of welded-on fishplates.