Pisak Lertvijitpun
Department of Welding Engineering Technology, College of Industrial Technology, King Mongkut’s University of Technology North Bangkok Thailand
Narongdet Pattanaphiboon
Department of Welding Engineering Technology, College of Industrial Technology, King Mongkut’s University of Technology North Bangkok Thailand
Sittipong Sang-in
Department of Welding Engineering Technology, College of Industrial Technology, King Mongkut’s University of Technology North Bangkok Thailand
Phisittawin Reanpradub
Department of Welding Engineering Technology, College of Industrial Technology, King Mongkut’s University of Technology North Bangkok Thailand
