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1. The material of the shelf: The material of the shelf should be SS400 steel from Baogang Original Factory and Shanghai Steel No. 1 Factory. There seems to be no strict and complete set of shelf industry standards in China, and there seem to be few that can meet the European FEM shelf standards.
2. The structure of the shelf: the shelf column depends on whether the bending of the section is more and uniform, and the more about uniform and symmetrical the structure, the better. The beam of the shelf depends on the hook structure of the beam and the form of the beam hanging to the column: the hook of the beam is better, and the more force is good; The hook of the beam is hung on the column, to see whether the contact between the hook and the column is closely consistent, the inside of the hook should be tight with the side of the column, there is no gap, so that the structure can be stable and strong, durable.
3. Surface treatment of the shelf: the surface spraying treatment of the shelf should be uniform and have strong adhesion, whether the surface of the shelf is sprayed uniformly depends on whether there is any omission on the inner edge of the shelf column hole, and it is good to use hard objects to tap if it falls off easily, indicating that the shelf is easy to rust.
4. Welding process: This is a good identification.
