4. Annealing Following the cold rolling process, the steel strips may require annealing. This heat treatment process relieves internal stresses that develop during cold rolling, restoring ductility and reducing hardness. The annealing process can be performed in a continuous furnace where the steel strip is heated and then gradually cooled.
The manufacturing and installation of steel pipes for gas lines are governed by rigorous standards set by organizations such as the American Society for Testing and Materials (ASTM) and the American National Standards Institute (ANSI). The pipes are categorized by their specifications, including wall thickness, diameter, and material grade. Common standards, such as ASTM A53 and ASTM A106, outline the requirements for carbon steel pipes used in gas applications. Compliance with these standards ensures that the pipes can withstand the operational pressures and conditions they will face in the field.
