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Medium-sized shelves are composed of pillars, beams and laminates. An independent group has two pillars. Such shelves are called main shelves. If several groups are assembled into one column, the other groups can share one column with the group in front of them except the first group which needs two columns. Such shelves are called sub-shelves. If the shelf is to be moved frequently, it is recommended to use the main shelf. The shelves connected by the main rack and the auxiliary rack must follow the main rack. Main frame: two pillars (one pillar: two pillars plus several transverse stayed cable-stayed). Beams (two beams on the first floor). Laminates (Laminates are placed on two beams). Sub-frame: one column (one column: two columns plus several transverse stayed cable-stayed columns). Beams (two beams on the first floor). Laminates (Laminates are placed on two beams). Different types of shelves have different passes to facilitate the connection of beams. Nowadays, the commonly used passes in the market are trapezoidal hole, butterfly hole, rhombic hole, bean sprout hole, octagonal hole and so on. Specifically, there is no standard for which pass to be adopted, most of which are adopted by each manufacturer according to their own production process. For medium-sized shelves, trapezoidal holes and butterfly holes are commonly used in the market. The trapezoidal hole is easy to press and expand for customers. The butterfly hole is beautiful and easy to install. Southern manufacturers also adopt their own unique pass, so customers have to rely on their manufacturers for shelf renovation. Installation steps 1. Stand up a pillar piece and insert two beams out of the bottom butterfly hole to pay attention to alignment. 2. Set up another column piece and insert the beam in step 1 to pay attention to alignment. 3. According to the above insertion method, insert the rest of the beams into the attention alignment according to the required height. 4. Place the laminates on the P-beam in turn and finish.
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