The four-way intensive warehouse shelf is mainly composed of rack pieces, Sub-channel crossbeams, Sub-channel tracks, horizontal tie rod devices, Main channel crossbeams, Main channel tracks, Connection of racks and ground, adjustable feet, back pulls, protective nets, maintenance ladders, The main material of the shelf is Q235/Q355, and the raw materials of Baosteel and Wuhan Iron and Steel are selected and formed by cold rolling.