Here's what a kinked CO2 hose can do ... http://rs820.pbsrc.com/albums/zz129/Ger09/20140204_104549-1_zpsaeb9f99b.jpg~320x480?t=1393635815 1G TC-U-4A-GF on 2.5" A572-50 With an inch of weld already in the joint, the porosity on this pass extended so much that it was decided to cut the entire weld out and start over. This cost the contractor quite some time and money. Mind those hoses.
A few years ago Tommy and I did a job near my house that had 8 foot butt welds and fillet welds that looked exactly like that! We had to do the same thing, remove the welds and start over. I don't think it was a kinked hose with the one we did though!
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