Characteristic of fake and inferior thick-walled steel pipes

1. Easy to fold.

2. The appearance is often numb.

3. The surface of the steel pipe is prone to scars.

4. The surface of fake and inferior materials is prone to cracks.

5. Steel pipes are easily scratched.

6. The steel pipe has no metallic luster, and is light red or similar to pig iron.

7. The transverse bars of steel pipes are thin and low.

8. The cross section of the steel pipe is oval.

10. The material of the steel pipe contains many impurities, and the density of the steel is relatively small.

11. The inner diameter of the steel pipe fluctuates greatly.

12. The trademarks and printing of steel pipes are relatively standardized.

13. The longitudinal bars of fake steel rebar are often wavy.