Folding Stair Product Details FOLDING STAIR Folding stair is used at safety passageway between platform and tank. Folding stair is mainly composed of footfall,armrest,spring cylinder balance system etc.footfall adopts the tooth grid structure, prevent slippery performance is good,very suitable for snow and rain days or heavier oil pollution.High intensity structure design,the design bearing more than 300 kilograms.Overall use galvanized processing,beautiful, durable. Land Loading Arm, Main Seal, Rotary Joint Supplier. Looking for land loading arm, folding stair or lining PTFE loading arm? Welcome to contact us, We will provide you with professional product knowledge. More information please view here.