Welding a pipe beveled end with SW elbow is possible?
Welding a pipe beveled end with SW elbow is possible?
(OP)
Same people say Yes, other no, (both in Carbon steel) what is the correct option?
Thank you very much for your answers
Thank you very much for your answers





RE: Welding a pipe beveled end with SW elbow is possible?
Yes, it is possible.
RE: Welding a pipe beveled end with SW elbow is possible?
Thanks.
Ok, Is technically necessary to remove the bevel?
or you can leave it? since the material welding would in other different point in the elbow socket. (I have 24 four cases)
RE: Welding a pipe beveled end with SW elbow is possible?
Your question:
Is it possible to weld a beveled end pipe to a SW elbow?
The answer is Yes it is possible.
The only issue is, is it the right thing to do?
- Did you deliberately bevel the end of the pipe for this purpose?
- Or was it a case of the piece of pipe that was handy just happened to already be beveled?
- What is the commodity in the line?
- Is it a fluid that could cause problems because there is a slightly larger gap in the socket?
There are all kinds of questions and the answers to them could justify doing it or not doing it.
Sometimes its possible to do all the right things and still get bad results
RE: Welding a pipe beveled end with SW elbow is possible?
In assembly of the socket joint before welding, the pipe or tube is inserted into the socket to the maximum depth and then withdrawn approximately 1/16" away from contact between the end of the pipe and the shoulder of the socket. The bottoming clearance is to reduce the residual stress at the root of the weld that could occur during solidification of the weld metal, and to allow for differential expansion of the mating elements.
The expansion gap and internal crevices left in socket welded systems promotes corrosion and make them less suitable for corrosive or radioactive applications where solids buildup at the joints may cause operating or maintenance problems.
Socket welding systems are unacceptable in food industry application since they do not permit full penetration and leave overlaps and crevices that are very difficult to clean, creating virtual leaks.
RE: Welding a pipe beveled end with SW elbow is possible?
Thus, the very end of the outside of the orginal pipe wall - which has been removed by the butt weld pipe preps in your case - does not "see" any of the pipe weld stress that is coming through the joint.
However! If your pipe wall is very thick, or the butt weld pipe wall prep is ground improperly (so the current prep IS going to be welded over), then you MUST fill out the pipe wall (butter it up to near-nominal in the vernacular) BEFORE fitting up the joint as described above. Remember to account for and maintain the 1/16 to 1/8 gap between the end of the pipe and the bottom of the socket weld fitting before welding begins..