Welding, Capping, 6010

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Hey guys new to the form and glad I found this site!  Had two questions about arc/stick welding on sch40 pipe with 6010  1/8".  When capping on a vertical joint what is a good pattern and range of heat?  Currently I run a shoe lace type weave pausing slightly at the ends but I feel like there might be a better method short of using 7018 haha.  (welding at ~85-90, root, hot pass which brings me up to about 7/8 to surface then the cap)Also I read somewhere that running loops or "C"s on horizontal joints isnt ideal ??? due to the chance of slag being caught over each loop?  How true is this?  I currently weld root, hot pass, and two stringers for horizontals for a hot water system (approx 150 ~ 200 lbs pressure) just curious if I'm welding ideally.Its funny you ask ten people in person these questions you get ten different answers...Thanks!
Reply:What diameter is the pipe?  Is it A-53 pipe or A-106?1" Sch 40 (Std Wt) A-53 pipe is "rated" for 226 psi up to 400°F2 1/2" Sch 40 A-53 pipe is "rated" for 533 psi up to 400 °FThe joint that takes the most stress in pipe is the long joint.  The girth joint is subjected to about half the stress of the long joint.  Since you're welding girths, you shouldn't have a problem using 6010 from a stress perspective.I don't think trapping slag will be a big issue with the shoelace pattern, but I like to run a scratch pass with a grinding wheel between passes to make sure I didn't get any slag inclusion.  Dye checking between passes also helps to see where you may have trapped slag.I don't know if this completely answered your question, but I hope so.
Reply:I found figure 8s' work well for 6010 cap. tight arc with fluid consistent motion.Obviously you can weld downhill if space or range of motion is limited. 95% of the time, I burn 5P+ for root, 1/8, and switch to 3/32 7018, and never touch heat.Nat Gas piping, I just run 6010 the whole way out.Lincoln Power MIG 210 MP ( boat anchor )Lincoln Weld-Pac 100 HDHobart IronMan 230Cutmaster 42Jackson NexGenSumner Ultra ClampsDWM120
Reply:Diameter of the pipe is anywhere from 4 inch to 8 inch.  Im interested to see the look on my co workers faces if I asked them to dye test, xray or grind down passes... Im lucky I get a wire wheel lol...  Hmm never tried a figure 8 might have to check that out...  back in school when I learned to weld they made us use 7018 always to cap.  But I've gotten use to the 6010 by now just trying to see if there was a better way.  Always room for improvement!Thanks
Reply:Old Boilermaker showed me that one...If travel is vertical, you would loop down, and slow down at toe, then rise, loop down etc....If you do it bass-ackwards, it will look like trashLincoln Power MIG 210 MP ( boat anchor )Lincoln Weld-Pac 100 HDHobart IronMan 230Cutmaster 42Jackson NexGenSumner Ultra ClampsDWM120
Reply:I cap with a whip technique. Moving back and forth with even uniform whipping action. I got a few pics of 6010 caps in my album in my profile