• This step is for processing the parts to be used during the manufacturing of the damper.
• The steel sheet is first laser cut and then it is processed by bending.

• It is the stage of making the overall outer housing of the damper and proceeds with Fit up-Welding-Calibration-NDE(PT).
• Welding works using GTAW according to the WPS, and once the NDE (PT) is completed the task is finished by Pickling & Passivation.

• This is the step of assembly where the receiving inspected damper body, blade, and various accessories and this step brings in process of line qc or self-inspection.
• Once assembly of the damper body has been completed, the entire assembly process is finished by the installion of the actuator for driving.

LEAK TEST

• To check the sealing properly, the damper connected with sealing air fan is tested.

HEAT TEST

• The integrity of the damper must be checked through the heat test as the actual damper will be exposed to high temperatures exceeding 350℃.