Introduction to Common Specifications of Heavy Duty Shelf Columns

　　Hole type and parameters

　　The cross-sectional shapes of the five types of columns are basically the same, but with different thicknesses. There are two rows of fan-shaped holes on the front of the column, which are used for hanging crossbeams. There are a total of four rows of circular holes on the two sides of the column, of which two rows are rod holes. Here is a technical parameter to remember: the pitch between the adjacent upper and lower fan-shaped holes on the front of the column is 75mm.

　　Specification of columns

　　There are various types of cross-sectional shapes and hole types (diamond shaped holes, inverted eight holes, butterfly holes) for columns, with commonly used sizes of 90 * 70 * 1.8, 90 * 70 * 2.0 (standard), and 90 * 70 * 2.3110 * 70 * 2.3110 * 70 * 70 * 2.5. However, although there is no explicit regulation on the hole type of columns in the industry, diamond shaped holes can be used in conjunction with reinforced column clamps to avoid shelf shaking, making them more stable and becoming the mainstream column hole type.

　　Material of columns

　　Heavy duty shelves have a large load-bearing capacity, and even each layer can bear more than 5 tons. Generally, Q235B steel is used, which is rolled into shape with large coils of steel and is suitable for warehouses operating at room temperature. If the warehouse is operating in a low-temperature cold storage or other conditions, material replacement or thickening of steel plates will be considered to ensure the shelf's service life and safety.

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Summary of influencing factors on the production quality standards of heavy-duty shelves.counter top