Senior Military Member
i can tell by the bead i'm pretty sure its an 1/8" rod and 155 amps is 155 amps regardless if its a Miller 225 Bobcat or a 1979 Lincoln cracker box.we also use 6010 to root thin wall pipe, completely different procedure though.
most of our thick(1" to 2 5/8"s ) pipe/vessels is mig root, with 7018 fill, and subarc cap.
I currently have my C pressure, subarc, and mig root tickets.
he didnt even state the size of rod nor the type of mechine used, and theres also arc force to consider..