steel wood stairs1. Style: straight/ L-shaped/ U-shaped/curved/ spiral2. Component: Keel/Spine: Φ108x4.0mmA3 steel/S.S.304 Treadboard: 38mm European beechHandrail: 50mm European beechbaluster: 40x8.0mm A3 steel/S.S.304It is aesthetic but very useful achievement by the diligent work from our profession designers, precise engineers and skilled workers.Our products would be always strictly tested and pre-delivery installation is a must.Any inquiry, contact us.