How to identify fake and inferior seamless steel pipes

To identify the advantages and disadvantages of seamless steel pipes, you can start from the following aspects:

1. Identify by inspecting the appearance. The surface of inferior seamless steel pipes is prone to scarring, which is mainly due to more impurities and uneven materials.

2. Dimensional accuracy: the inner and outer diameters of inferior small-diameter seamless steel pipes fluctuate too much. Some will also have wall deflection, and the wall deflection is serious.

3. Folding. Fake and inferior steel pipes are prone to folding. Folding is a variety of fold lines formed on the surface of seamless steel pipes caused by manufacturers' pursuit of high efficiency. This defect usually runs through the entire product. The surface is pitted, prone to scars and cracks, and even easy to scratch, has no metallic luster, and has an oval cross-section.

4. Material, the composition of the steel is uneven, and the end face of the cutting head is not smooth.

In order to pursue high efficiency and profits, manufacturers of fake and inferior steel pipes have adopted various unfair means, such as cutting corners, using inferior billets, and using rudimentary equipment. These problems have led to a decline in the quality of steel, which is prone to quality problems such as folding, pitting, scarring and cracks, and may even threaten people's lives.