Column is one of the components of storage shelves.

Upon careful observation, it can be seen that there are many regularly arranged perforations on the column. So, what is the purpose of these perforations?

The invention of perforated columns was to replace the traditional welding process in the early days. The connection method between columns and beams changed from welding fixation to plug-in assembly, making the installation and disassembly of storage shelves more convenient and aesthetically pleasing.

2. At the same time, these perforations are arranged in a regular pattern, with a certain distance between each hole, and the spacing between storage shelves can be adjusted according to customer needs.

3. Additionally, it can be observed that there are two rows of identical perforations on the columns. This is because storage shelves are often connected by main and auxiliary frames during use, and two rows of perforations on a single column can accommodate two crossbeams.

So what are the differences between different hole shapes? Due to the lack of relevant regulations and standards on the hole shape process of storage shelves in the storage shelf industry, it is generally decided by shelf companies based on their own production technology and process to adopt what hole shape.

Butterfly holes and diamond holes are currently the most common in the domestic market.

As the name suggests, butterfly shaped holes resemble butterfly wings, while diamond shaped holes are diamond shaped.

Below, the editor will mainly talk about the difference between butterfly hole and diamond hole shelves.

1. Material

The cross brace and slant support of the butterfly hole shelf are square tubes or round tubes, and the diamond hole shelf is C-shaped channel steel.

2. Structure

The cross brace slant support of the butterfly hole shelf is welded to the column, and the common spot welding bears the load for a long time, which is easy to be out of welding and deformed; The diamond shaped hole shelves are connected by bolts, which can effectively avoid the danger caused by welding detachment. The columns are the support of the entire shelf, and once deformed, it will be very dangerous.

3. Bearing capacity

The profiles used for butterfly hole shelves are generally small, carrying 50-250KG; Diamond hole shelves can be paired with reinforced column clamps, which will be tightly pressed against the cargo column clamps and columns to prevent the shelves from shaking. Therefore, they are generally used to carry large heavy-duty shelves.

4. Price

Butterfly hole shelves are relatively cheap, while diamond hole shelves are slightly higher.                      

5. Installation

When assembling and disassembling butterfly hole shelves, it is necessary to use a rubber hammer to strike them forcefully, and the material is small and prone to deformation. Diamond hole shelves do not require tools and can be installed directly without worrying about deformation.