Twin-Wire Pulsed Tandem Gas Metal Arc Welding of API X80 Steel Linepipe

Table 3

Welding parameters.

Welding pass	Welding current I/A	Arc voltage U/V	Velocity v/mmin^−1
Root	240	27	0.8
Hot	240	27	0.5
1st filler
Leading wire	210	28	0.3
Trailing wire	190	30
2nd filler
Leading wire	210	28	0.3
Trailing wire	190	30
Cap
Leading wire	210	28	0.3
Trailing wire	190	30