As a material widely used in industry, construction, home and other fields, the surface treatment technology of stainless steel is crucial to enhance its performance, improve its appearance and meet the specific needs of use. There are a wide variety of surface treatment technologies for stainless steel, and each method has its own unique advantages and application scenarios. Common stainless steel surface treatment technology, including mirror treatment, sandblasting, chemical treatment, surface coloring, surface drawing treatment and spraying.

Seamless steel pipes come in a wide variety of specifications, typically indicated by outer diameter, wall thickness, and length. The manufacturing processes include cold rolling and hot rolling, with cold-rolled pipes having a maximum nominal diameter of 200 mm, while hot-rolled pipes can reach up to 600 mm. Wall thickness ranges from very thin to relatively thick, and different standards and applications correspond to various specifications, requiring comprehensive consideration of multiple factors when selecting.

Knowledge on Production Control and Improvement of Stainless Steel Pipe Fittings

Solution annealing is a metal heat treatment process. Its main purpose is to change the internal structure of the metal through heating and rapid cooling, in order to optimize the material properties. For stainless steel pipes, this process is particularly important.

Hardness: It is a performance indicator used to measure the softness or hardness of a material. There are numerous methods for conducting hardness tests, and the principles vary as well. The hardness values obtained and their meanings are not exactly the same.

This article provides a detailed introduction to the common methods for testing the hardness of steel and their corresponding tables, including Brinell hardness (HB), Rockwell hardness (HRC), and Vickers hardness (HV), etc. Brinell hardness is suitable for softer materials, Rockwell hardness is suitable for high-hardness materials, and Vickers hardness is suitable for microscopic analysis.