1) Hung structure used for column disc and crossbeams2) Designed for medium and heavy load capacity3) The height of each layer can be adjusted by pitch 50mm freely4) Flexible, easy expandable and adjustable5) Parts: upright poles, layer plates, crossbeam, cross bar, bracing, safety pins, wire footing plates etc.6) Material: high quality steel7) Max. load capacity: ≤550kg per layer producing area:China payment:T/T, L/C supplying capacity:100,000pcs/month