... load if have 5) Doors and windows 6)Crane (if have) ,Crane span, crane lift height, max lift capacity, max wheel pressure ... Wind resistance rolling door(within 15m2) Window Alu.alloy(can with skylight) Usage Warehouse,workshop,shopping mall,exhibition,supper market ... putianhouse dot com to get quotation (5)Steel structure warehouse with crane(5T,10T,20T) Main structureSingle span shorter than 20m, ...