Brief explanation of installation steps for crossbeam shelves Preparation in advance: Clean up the installation site to ensure a flat surface; Mark the column positioning line according to the design drawings, check whether the shelf components (columns, beams, bolts, etc.) are complete, and prepare tools such as wrenches, level gauges, and tape measures. Assembly of column sheet: connect the column with the cross brace and slant support to form a column sheet frame with nylon self-locking bolts, adjust the perpendicularity (error ≤ 1mm/m) through the level and plumb bob, and tighten the bolts for fixation. Fixed column pieces: Erect the column pieces according to the positioning line, adjust the spacing to match the length of the crossbeam, and use expansion bolts to fix the bottom of the column pieces to the ground for heavy-duty shelves. Installation of crossbeam: Align the two ends of the crossbeam with the diamond shaped holes on the column, push in and tighten them, insert safety pins to prevent detachment; Use a spirit level to ensure that the crossbeam is level and the floor height error is ≤ 5mm. Installation of accessories and acceptance: Install auxiliary accessories such as anti-collision foot guards and shelves; Review the overall dimensions, verticality, and stability, check if the safety pins and bolts are secure, and complete the no-load or full load test.