How to identify counterfeit thick-walled steel pipes?
2013-07-03
How to identify inferior thick-walled steel pipes? The following introduces the characteristics of inferior thick-walled steel pipes:
1. Inferior thick-walled steel pipes are prone to folding.
2. Inferior thick-walled steel pipes often have a rough surface.
3. The surface of inferior thick-walled steel pipes is prone to scabs.
4. The surface of inferior materials is prone to cracks.
5. Inferior thick-walled steel pipes are easily scratched.
6. Inferior thick-walled steel pipes lack metallic luster and appear light red or similar to pig iron in color.
7. The ribs of inferior thick-walled steel pipes are thin and low, often showing signs of being underfilled.
8. The cross-section of inferior thick-walled steel pipes is oval-shaped.
10. Inferior thick-walled steel pipes contain many impurities, and the density of the steel is relatively low.
11. The inner diameter size of inferior thick-walled steel pipes fluctuates greatly.
12. High-quality pipe trademarks and printing are more standardized.
13. For large-diameter threaded pipes over 16, the spacing between two trademarks is above IM.
14. The longitudinal ribs of inferior rebar often appear wavy.
15. Manufacturers of inferior thick-walled steel pipes do not have cranes, so the packaging is relatively loose, and the side appears oval.
Shenyang Tengfei Iron Corporation
Shenyang Tengfei Steel Pipe Co., Ltd.
Address: No.6 A 3, No.13 Road, Economic and Technological Development Zone, Shenyang City, Liaoning Province
E-mail:tfwelcome@163.com
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