Curved Steel Wood Modular Stairway 1.Stringer/Beam -mild steel stringers with parts -baking varnish or powder coated 2.800 1000mm width wood tread -timber:rubber wood,beech,oak,walnut... -color optional 3.Steel railing -mild steel baluster -stainless steel rail -stainless steel or wood handrail 4.Your special requirements are welcomed also