lap joint - can I weld the stub end to a socket weld fitting?
lap joint - can I weld the stub end to a socket weld fitting?
(OP)
Hi,
I've got an application with a limited space. I wonder if it isn't against any design rules to weld the butt weld end of a stub-end of a lap joint fitting directly into a socket weld fitting (instead of normal butt weld to a pipe)? This is a 1'' size connection in 700psig steam service.
Thanks for any advice
I've got an application with a limited space. I wonder if it isn't against any design rules to weld the butt weld end of a stub-end of a lap joint fitting directly into a socket weld fitting (instead of normal butt weld to a pipe)? This is a 1'' size connection in 700psig steam service.
Thanks for any advice





RE: lap joint - can I weld the stub end to a socket weld fitting?
RE: lap joint - can I weld the stub end to a socket weld fitting?
RE: lap joint - can I weld the stub end to a socket weld fitting?
RE: lap joint - can I weld the stub end to a socket weld fitting?
This is different, say, than inserting a plain butt-welding elbow or tee into a socket-welding fitting, where the radii of the fitting results in an asymmetrical weld when the part is inserted into the socket to the correct depth and hence is considered bad practice. Again I'm aware of no prohibition against doing what I just mentioned in a particular section of B31.3, but it's not something I'd ever do in code piping personally. In those cases, special "long-land" elbows and tees can be procured for the job, or else a pup piece of pipe would need to be added to the fitting.
RE: lap joint - can I weld the stub end to a socket weld fitting?
Regards,
Rafal