Duvinage is the leading manufacturer of custom metal stairs since 1895. Founded by Pierre Duvinage, the company specializes in fabricating a wide range of metal stairs, including spiral, circular, straight egress, and alternating tread stairs. Duvinage, along with its division Sharon Stairs, is the only American company capable of engineering and fabricating every type of metal stair, offering a single point of contact for architects and contractors. The company's stairs are renowned for their architectural integrity and superior engineering, showcased in projects featured on Science Channel's How It's Made. Duvinage is a key player in the Key Bridge family of companies, providing world-class manufacturing and service in the metal stair industry.