No I have no way to post pics right now.
We match the filler rod to the composition of the steel.
We utilize a Miller mig/tig machine with a tig micro torch. I also am not the guy behind the welds, that would be my 35+ year experience steam fitter/pipe fitter/welder/steel fabricator... Mr TonyG.
Would I let just anyone, with any welder, and unknown experience weld on my gas systems? Hell no.
Doing a professional job, with the exact tools for the job including alignment jigs and heat sink so as to not cause heat deformations or warping, is essential.
I should add that we do have lots of NM oprod spring guide rods in stock.