Identification the Fake of Thick Walled Steel Pipes

1. Shoddy thick-walled steel pipe prone to folding.
2. Bad thick-walled steel pipe surface prone to scarring.
3. Pseudo-inferior material surface is easy to crack.
4. Fake thick-walled steel pipe easy to scratch.
5. Shoddy thick-walled steel pipe without metallic luster, pale red or similar pig iron color.
6. Counterfeit thick-walled steel tube of fine and low cross-ribs, often appear dissatisfied with the phenomenon.
7. Fake thick-walled steel pipe cross-section was oval.
8. Fake thick-walled steel pipe material containing impurities, steel density is too small.
9. Forged thick-walled steel pipe diameter size fluctuations.
10. Quality control of the trademark and printing are more standardized.
11. Three large diameter pipe diameter 16 or more, the spacing between the two trademarks are above the IM.
12. Shoddy steel The longitudinal reinforcement of rebar is often wavy.
13. Counterfeit thick-walled steel pipe manufacturers do not drive, so packaged more loose. The sides are oval.