Warehouse heavy duty storage rack is a common pallet racking system in use today. Selective pallet rack systems provide easy accessibility to all products at all times - important if the inventory is rapidly depleted and restocked (called quick turnover). A selective pallet rack system is commonly used in a "big-box" distribution application, as well as in retail store inventory rooms, cold storage applications, wholesale stores, etc.
Warehouse heavy duty storage rack has two major type selective pallet racking .Roll form clip-in configeration and structural bolt-together configuration.
1.Clip-in Configuration. Welfor provide two type of holes on the column of the upright , Teardrop shape and Diamond shap, these two different design just fit for regionality design, American market more like teardrop shap, Euro and Australian more like diamond shape. There don't have any load capacity different between these two style holes. Pallets then rest on the horizontal load beams that are held in place by mounting clips. Because the clips on teardrop configurations can be quickly moved, the shelves can be easily adjusted to different heights to accommodate various load sizes. This is convenient for a warehouse that needs to store a wide variety of product sizes.
2.Structural pallet rack systems are very similar to roll formed pallet rack systems except the horizontal load beams are attached to the uprights with bolts and have much greater weight-bearing capacity. The bolt fixings make this a form of adjustable shelving - racks can be constructed, reconfigured, and dismantled and reused as necessary.