The identification of heavy duty shelves rack can be considered from the following four points:
1. Material. The material of shelf in China should be SS400 steel from Baogang original factory and Shanghai Steel No.1 Factory.It seems that there is not a set of strict and complete shelf industry standard in China, and there are only a few manufacture that can meet the European FEM shelf standard.
2. Structure: shelf column to see whether the section bending is eough and uniform, the higher uniformity ,the symmetrical structure is better.The beam of shelf depends on the structure of the hook and the form of beam vertical column: the hook of cross beam should be more, the more ,the force is better;The hook of beam hangs on the column, and check whether the contact of hook and column is close , the inside of hook should be close with column flank ,without gap the structure ability is stable and bear force is good.
3. Surface treatment: the surface spraying treatment of the shelf should be uniform and have strong adhesion. Whether the surface spraying of the shelf is uniform depends on whether there is any omission at the inside edge of the shelf column hole.It is good that there is no omission. You can tap it with a hard object during inspection. If it falls off easily, it means the shelf is easy to rust.
4. Welding process: This is the best one to identify.