Any Inquiry or order on steel stairs is welcom here. Spec.: Width: 800mm-1000mm (when arc shape, Φ>=2300mm) Handrail: Φ38-50.8mm s.steel tube Baluster: 8mm*40mm flat steel (double pieces each) Rails: Φ8mm s.steel rods Stringer: (8mm thickness mild steel plate) X 2 sides, Baking paint Treads: 19mm thickness, toughened glass / 38mm thickness, beech, lacqured * Shape optional: Arc/L *Color optional: see our color chart *Wood type: American Oak/ European Beech Feature: -Supported in double modular stringer( powder coated per color chart ) makes itsturdy and many shapes available. -Ease of installation with instructions provided -Fancy horizontal railing available in stainless steel cable or in glass -All metal are powder coated -Stair is available per building code Just send us your house floor plan or photofor a free drawing to see how it will fit and look in your home. Xinding supply several classic designs of stairs supported by modular steel stringer for your demand. To help you upstairs step by step on our stairs is what we untiringly aspire after.