Measure the quality of stainless steel pipe five indicators

Measure the quality of stainless steel pipe five indicators

In the face of the increasingly strict requirements of stainless steel quality, it is generally believed that the measurement of stainless steel quality should at least include (chemical) composition, (microscopic) structure, various properties, (steel) purity and surface quality of the five content, or known as the five criteria.

At present, the chemical composition of stainless steel must be qualified, the microstructure must be normal, various properties must meet the requirements of national standards (or technical conditions), and so on, although these have been recognized by the domestic regular stainless steel production enterprises, but through a large number of fatigue and application examples, has been fully proved:

The purity and surface quality of stainless steel (surface condition and surface processing) also have extremely significant difference to the quality of stainless steel, but has yet to gain widespread recognition at home and take effective measures to ensure that this is also the domestic stainless steel among normal production enterprises, product quality difference is bigger, the growth of the domestic and foreign famous stainless steel stainless steel enterprise brand stainless steel, there is a certain gap in the quality of the important reasons.