- Carbon steel, Stainless steel, Cooper, Alumnium stud - DIN, EN, ISO, ANSI/ASME, and JIS standard - Koco and Nelson type welding bolt Model1000i1200i1600iStud rangeΦ4mm—Φ12mmΦ4mm—Φ16mmΦ4mm—Φ20mmWelding current200A—1000A200A—1200A200A—1600AWelding time0.1S—3.0S0.1S—3.0S0.1S—3.0SWelding speedΦ12 10pcs/minM16 10pcs/minM20 10pcs/minInput powerAC 3~280-440VAC 3~280-440VAC 3~280-440VInput ...