About products and suppliers:
Alibaba.com offers 2168 medium duty steel beam shelf storage rack products. About 22% % of these are stacking racks & shelves, 3%% are cargo & storage equipment. 

A wide variety of medium duty steel beam shelf storage rack  options are available to you,  such as warehouse rack, industrial and tool rack.You can also choose from steel, stainless steel and stee wire medium duty steel beam shelf storage rack,As well as from corrosion protection, esd protection, and suitable for outdoors.  and whether medium duty steel beam shelf storage rack is multi-level, boltless / rivet shelving, or selective pallet rack.