... 2,long using life 3,easy to install and operate 4,high effiency SS100/100 Material Hoist is a vertical handling ... for users. The standard sections of Double-caged are 4 pieces of ø76 * 4 seamless steel pipes, which can also be taken ... as guide rail, while those the Single-caged are 2 ø51 * 4 pipes. Mezzanine used platform