CD Stud welding machine

1- CD Stud welding machine weld specification as follow:

must to could weld stud types of insulation pins
Welding Range : M3 - M8 (in Mild Steel and Stainless Steel)
M3 - M6 (in Aluminum and Brass)
Work piece thickness 0.5 mm – 3 mm
Welding process : "Gap" or "Contact"
Mains supply : 230 V - 50 / 60 Hz - 10 AT
Insulation Class : 1