Made in the USA Since 1895.
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Alternating Tread Stairs
Alternating tread stairs achieve vertical access with a shorter horizontal span than traditional stairs and greater functionality than traditional ladders. Duvinage custom designs and fabricates alternating tread stairs to the highest industry standards.
Available in steel, stainless steel, and aluminum, with finish options in mill, primer, paint, powder coat, and hot-dip galvanizing.
Ideal for mezzanines, roof access, production lines, parapets, equipment access, catwalks, storage tanks, emergency egress, and loading docks.
Alternating Tread Stairs and Related Product Lines
Alternating Tread Stair Projects
From bridges and water treatment facilities to hotel rooftops and schools, learn more about Duvinage custom designed and fabricated alternating tread stairs.
Ships Ladders
Permanent ladders with grab rails and slip-resistant treads are custom designed and fabricated for your specific application.
Industrial Stairs
From silos and water tanks to towers and storage facilities, Duvinage has been designing and fabricating custom metal stairs since 1895.