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How to identify thick-walled seamless steel pipes?

Published Time:

2022-06-07

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Summary

In the actual trading environment, the quality of Jiangsu seamless steel pipes is uneven, and there are many counterfeit and inferior products. So how to identify thick-walled seamless steel pipes? The following is an introduction: Counterfeit Jiangsu seamless steel pipes often have rough surfaces. The uneven surface refers to the irregular raised defects on the surface of Jiangsu seamless steel pipes caused by serious groove wear. This is because Jiangsu seamless steel pipe manufacturers excessively pursue profits, and the rolling groove process has not been replaced. Counterfeit and inferior Jiangsu seamless steel pipes are prone to scarring on the surface There are two reasons for this: on the one hand, the quality of Jiangsu seamless steel pipes is uneven, and there are more impurities; on the other hand, the manufacturer's guide device is not good, it is easy to stick steel, and impurities are easy to leave scars on the surface of the stainless steel pipe after rolling. Counterfeit wood surfaces are prone to cracking The reason for cracking is that the billet is an earth billet, and the earth billet has larger pores. The earth billet is easily cracked under the influence of thermal stress during cooling, causing cracks in the stainless steel pipe after rolling.

　　Counterfeit Jiangsu seamless steel pipes often have rough surfaces.

　　A flat surface refers to irregular raised defects on the surface of Jiangsu seamless steel pipes caused by severe groove wear. This is because Jiangsu seamless steel pipe manufacturers excessively pursue profits, and the rolling groove process has not been replaced.

　　Counterfeit and inferior Jiangsu seamless steel pipes are prone to scarring on the surface.

　　There are two reasons for this: on the one hand, the quality of poor Jiangsu seamless steel pipes is uneven, and there are more impurities; on the other hand, the manufacturer's guiding device is not good, it is easy to stick steel, and impurities are easy to leave scars on the surface of the stainless steel pipe after rolling.

　　Counterfeit wood surfaces are prone to cracking.

　　The reason for cracking is that the billet is an earth billet, and the earth billet has larger pores. The earth billet is easily cracked under the influence of thermal stress during cooling, causing cracks in the stainless steel pipe after rolling.

Keywords:

Seamless steel pipe performance, use and types

The target of reducing crude steel output under the background of carbon neutrality

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2022-06-07

How to identify thick-walled seamless steel pipes?

2022-06-07

Tianjin Jinnuo Steel Pipe Co., Ltd.

The company's main products are straight seam steel pipes (straight seam welded pipes) and square pipes; the auxiliary products are hot-expanded steel pipes, hot-rolled steel pipes, large-diameter shaped steel pipes (large-diameter steel pipes), welded steel pipes, and galvanized pipes. We supply at low prices all year round, with guaranteed quality, good reputation and credibility, and are trustworthy.

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