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It's unfortunate that almost every welding thread turns into an argument.
x2, I was taught by a "CERTIFIED TEACHER" and i could weld ok, got some info from a real world, not old school, open minded individual, and now my welds are 100 percent better. Sometimes people get upset when they have thought they were right for so long, then find out otherwise. I myself like to learn, and am always open to new ideas, this thread is sweet.
There is nothing wrong with just welding a t joint with no bevel, as long as you do enough passes to make it a big enough weld for strength relative to the thickness of the metal. BUt if you want a even stronger weld with more penetration, bevel whenever you can.
BOTTOM LINE when ever possible Bevel the edge however beveling is not possible in all situations and proper adjustment or alternate welding procedures must be used. AND THATS THE BOTTM LINE BECAUSE I SAID SO
Do you believe that beveling a plate that will be placed in say a T joint orientation and welded from one side as opposed to fillet welding it with a weld the same size as the thickness of the material being welded increases the strength of that assembly? Any of the "debaters" feel free to give an opinion.
So "they" consider that a full pen weld with no backing plate or backgouging?
Is complete penetration in pipe welding from one side verified with some type of testing?
Correct, picture this, when you bevel the plate, its at a angle, when you put the weld back in there, it becomes part of the plate and through the full thickness of the plate, where they meet it has fusion. Now without a back gouge or backing plate you need to make sure the weld does goes all the way through. That is where skill comes in, along with a root opening. Pipe welding is done one side only a lot, you have a open root, and you use a 6010 rod so it shields it from the inside too. Usually its got a 1/8inch re-enforcement on the inside. A backing plate or back gouge, leaves very little error.
In testing for production pipe welding they either RT or UT test though correct? Coupons are only cut out of test plates for welder position certification/qualification testing right?
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