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How to distinguish JIS G3455 STS410 seamless steel pipe

2021-04-06 14:32:59

Inferior JIS G3455 STS410 seamless steel pipe is not only unsatisfactory in use, but also have a short service life. However, many customers cannot distinguish inferior JIS G3455 STS410 seamless steel pipe when purchasing. In fact, as long as one of the following five problems occurs, it is a low-quality JIS G3455 STS410 seamless steel pipe.

1. Surface pores

The pores are also well understood, that is, on the surface of JIS G3455 STS410 seamless steel pipe, many small holes can be seen with the naked eye. Most of these pores are very shallow, like transverse cracks.

2. Longitudinal split
Longitudinal cracks are the longitudinal cracks that appear on the surface of the steel ingot, which generally appear in the upper and corners, and the longitudinal cracks that appear on the top will be deeper.

3. Shrinkage
Shrinkage cavities are JIS G3455 STS410 seamless steel pipe in a liquid state when shrinking in the mold, sometimes due to environmental influences, such as air, temperature, etc., some shrinkage cavities are formed. From a professional point of view, it is called shrinkage.

4. Scars
As mentioned above, longitudinal cracks may appear in the upper or corners of the JIS G3455 STS410 seamless steel pipe, and the metal splashing and sticking sometimes appear in the lower area, which looks like a scar, so it is called Scarred.

5. Transverse crack
Transverse cracking is easier to understand, that is, transverse cracks have occurred on the surface of JIS G3455 STS410 seamless steel pipe. Generally, transverse cracks occur during the ingot period, but most of them are shallow in depth.

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