1. The workers only need to stack the pipe fittings neatly in the preparation box, and the loading rack will automatically sort the single pipe fittings.

2. Robot No. 1 sends the pipe fittings to the clamping die of the pipe bending machine for pipe bending. After the pipe bending is completed, robot No. 1 grabs the pipe fittings and sends them to the expansion end forming machine for A-end forming processing (adding flange).

3. After the pipe end is formed, robot No. 2 grabs the pipe fittings and sends them to the clamping die of the groove spinning machine for groove spinning. After completion, robot No. 2 grabs the pipe fittings and sends them to the No. 2 pipe end forming machine for B-end forming.

4. After forming, robot No. 2 grabs the pipe fittings and sends them to the conveyor belt, and then falls into the receiving box.