Because the best current cellulose bead rods, Lincoln 6010+ and 6P+, are specifically designed for open butt V pipe welds, uphill or down. Many, many decades of refinement have made those rods what they are. And they're the best choice given quality and production hands down, within the pipe...
CCB1 says "there's nothing more unnerving to a contractor than having the project engineer show up, un-announced at the site with a clip board and a camera".
I say that's a good thing. The greatest compliments, the best advertising our little company (usually a sub) has ever recieved was under...
mikeeggs, there are hundreds of tons of rods burned every week, downhill in pressure piping.
Cross country mainlines, station work, distribution systems and gathering systems are all welded downhill in the U.S.
JTMcC.
www.firstratefabricators.com
Several employee costs not on your list,
Overhead just to carry the employee, ie cost to make out payroll, correct payroll mistakes : ), send out all "end of tax year forms", every record related to employing this person, ect. Someone has to do this stuff.
Some percentage of your liability...
rmw I own a pipe welding outfit and have no engineering degree as I'm sure you are aware.
We work with engineering on a regular basis and employ engineers from time to time. I have of course an abiding interest in that engineering which affects our work.
JTMcC.
www.firstratefabricators.com
Just as an example, using Lincoln Pipeliner 6P+ (a new designation for 5P+)You will typically see mechanical properties like this: yield strenght in the mid 70,000 range, tensile strength in the mid 80,000's, elongation in the mid 30's, and charpies in the mid 60's @ -20F
Using 8P+ (the new and...
Most people already will know, but traditional uphill with LoHi consumables has been used inside the fence (ie in-plant), and downhill with cellulosic consumables has been used outside the fence (ie cross country,distribution and gathering)
This has evolved over the last few years to where more...
deanc I'm happy to be able to provide a bit of entertainment for you.
But P5 is not a slang term for 5P among old timers because old timers remember and used the real P5. As I already mentioned, P5 was the predessor to 5P, a completely different rod, with a white coating.
It was replaced by 5P...
GregLamberson says of pipeline welders, "You can't beat them".
I say, "but you really, really want to sometimes ; )"
unclesid, 798 is THE pipeliners union. There isn't another one.
Happy Memorial Day, fly that flag!
JTMcC.
www.firstratefabricators.com
798 has taken offense, I should of put a little smiley face after that ; )
But if you travel to cities with a large amount of refinery work, such as the east bay area, or during the days of nuke construction, or large scale steamer outages you'll find the rv parks and motel parking lots plumb...
798 has taken offense. When pipeline work is slow where do you think all those UA hands go?? To refineries, powerhouses, chemical plants, ect.
798 runs the best welding school in the U.S. (my opinion of course, but right nevertheless) inclucing tig on exotics, uphill stick, flux core/dual...
Cross country pipelines will typically run around 1200+psi.
I've never worked on power piping in the upper range you quote, how common is that? I haven't set foot in a powerhouse for a few years tho.
The new designation for 5P+ in the "pipeliner" line of consumable is 6P+. I have some...
P5 was the precceded 5P and 5P+, it had a white coating and hasn't been made since I believe the mid to late 60's.
Temperature is rarely a factor in cross country line pipe.
What pressure is your steam running at?
JTMcC.
www.firstratefabricators.com
unclesid you posted information that was flat out wrong. Your responce is to try to insult an entire group of welders. That speaks to your investment in your internet image more than it does to and form of welding.
Considering that every job is a test in my world, 100 tests in the span of 23 or...
GregLamberson,
That's why I made a point of saying my information applies to Mainline construction in the U.S.
I realize there are other parts of the world where different techniques are in use.
I'm always interested to learn what is being done across the globe in this field. Any info you're...
I'll add,
unclesid,
There is no "vertical" in pipe welding (or overhead or flat for that matter), there is of course in plate. Pipe is welded either uphill or downhill progression.
We make full pen welds daily on pipe in downhill mode. Your reference to "low penetration" again applies to...
My goodness there is a lot of wrong information here.
deanc, pipeliners DO NOT run "final passes uphill". "Downhill 7 times weaker than uphill"???? please take a close look at the mechanicals of the downhill pipe rods, 6010's, 7010's, 8010's and 9010's in use.
Pipeline welding isn't 95%...
DaveVikingPE you appear to be assuming that all companies are operating with the optimal level of manpower. I've seen many outfits with too many employees for a variety of reasons from bad management, to an evolution in services provided to you name it. In those cases the right thing to do IS to...
MikeHalloran,
There are many, many situations where outsourcing is the smart choice.
Yes you are (hopefully) paying someone else's profit to perform the function, but there are lot of times where it would cost you that amount of profit plus a lot more to perform that same function in house...
