a. Bar preparation; b. Heating; c. Hot perforating; d. Cutting head e. Pickling; f. Grinding; g. Lubrication; h. Cold rolling process I. Degreasing; j. Solution heat-treatment; k. Straightening; l. Pipe cutting; m. Pickling; n. Finished product testing.
a. Bar preparation; b. Heating; c. Hot perforating; d. Cutting head e. Pickling; f. Grinding; g. Lubrication; h. Cold rolling process I. Degreasing; j. Solution heat-treatment; k. Straightening; l. Pipe cutting; m. Pickling; n. Finished product testing.