1. The square rectangular steel tube forming machine thinks that the fake and inferior steel pipes are prone to folding.

　　Folds are various fold lines formed on the surface of the steel pipe, and this defect often runs through the longitudinal direction of the entire square rectangular steel tube forming machine products. The reason for the folding is that the counterfeit and inferior manufacturers pursue high efficiency, and the reduction amount is too large, resulting in ears, and folding occurs during the next rolling. The folded product will crack after bending, and the strength of the steel will be greatly reduced.

　　2. The appearance of the fake and inferior steel pipe of the square rectangular steel tube forming machine often has a pockmarked surface.

　　The pitted surface is the irregular unevenness on the surface of the steel due to the serious wear of the rolling groove. Due to the pursuit of profit by manufacturers of fake and shoddy steel pipes, groove rolling often exceeds the standard.

　　3. The surface of fake and inferior steel pipes is prone to scarring.

　　There are two reasons for the analysis of the square rectangular steel tube forming machine company: (1) The material of the fake and inferior steel pipe is uneven and there are many impurities. (2) The guide and guard equipment of the fake and inferior material manufacturers are simple and easy to stick to the steel. These impurities are prone to scarring after biting the roll.

　　4. The surface of the fake and inferior material of the square rectangular steel tube forming machine is prone to cracks. The reason is that its blank is adobe, and the adobe has many pores. During the cooling process, the adobe is subjected to thermal stress, resulting in cracks. After rolling, there are cracks.

　　5. The fake and inferior square rectangular steel tube forming machine is easy to be scratched, because the fake and inferior steel pipe manufacturers have simple equipment, which is easy to produce burrs and scratch the surface of the steel. Deep scratches reduce the strength of the steel.