I am not a pipeliner. The only training Ive had welding pipe was for my certification. I do weld pipe just not to the standards that a pipeliner would. I have a SAE-300 on the truck that I use just because its smooth and I have twice the arc manipulating opinions as other machines. I find that the buttery arc helps most on small diameter pipe the most. I am not familar with pipeline procedures. I know they run downhill alot and every cap weld I make is uphill. BTW 99% of the time im using 3/32 7018. Can someone who is a pipeliner explain when is a soft arc desirable and when is a forceful arc desirable? Is my thinking off by saying a soft arc helps on smaller pipe? Thanks for any help.