On Thu, 11 Jun 2009 06:25:17 +0200, Yvan
wrote:

I have to weld few 1 11/16 pipe 1/8 thick wall, and I have access to 170
amp MIG welder. Can I use that one, or I need to find more powerfull
welder?

170 amps is ample for 1/8" thickness.