배관공
Site: 1st phase of 4th construction project, Samsung Electronics semi-conductor mega cluster(2,880,000m2 )Installed fire protection SUS pipes(25A, 50A, 100A, 150A), air ventilation ducts, and pipe hangers on the main H-beam frame.Read blueprints to determine precise installation locations for pipes and pipe hangers, ducts, and welding points.Assisted.