Stainless steel pipe's bright annealing.

What is the bright annealing?

Bright annealing is a heat treatment process performed on stainless steel pipe to improve their mechanical properties and surface finish. The stainless steel pipe is heated in a controlled atmosphere or in a vacuum to prevent oxidation or scaling. It often used the pure hydrogen or liquid ammonia and temperature around 1050 degree(MIN. 1040 degree). The temperature and duration of annealing depend on the specific grade of stainless steel and the desired properties. 

Why the stainless steel pipes need the bright annealing?

Bright annealing is a critical step in the production of stainless steel pipes, providing improved mechanical properties, enhanced corrosion resistance and an attractive surface finish. 

Recrystallization: Bright annealing helps to relieve the stresses accumulated during manufacturing processes such as welding, bending, or cold working. It allows the stainless steel to recrystallize, reducing internal stress and improving its ductility and toughness.

Improved Corrosion Resistance: Bright annealing can enhance the corrosion resistance of stainless steel pipes by creating a clean, oxide-free surface. It removes oxide scales and contaminants that might have formed during the manufacturing process, ensuring a smooth and corrosion-resistant surface finish.

Aesthetic Appeal: Bright annealing improves the visual appearance of stainless steel pipes by producing a bright and shiny  surface. This makes it suitable for applications where aesthetics are important, such as decorative or architectural applications.

Dimensional Stability: The bright annealing process helps to stabilize the dimensions of the stainless steel pipe. It reduces distortion and ensures the pipe maintains its shape and dimensions over time, even when exposed to high temperatures or mechanical stress

Jiangsu ZK Metal Pipe Co.,Ltd is a factory and worked on SS industry more than 10 years. we are grow into one of top 10 manufacturers in China. We have very good reputation and are famous in domestic market as well as international market, we have serviced over 80+ customers all over the world. 

Our main Product: 201,304, 316L welded / seamless tube, AP & BA & EP tubes, pipe fittings(welded, seamless, froged,ferrule), coil, sheet etc.