urgent need of thicknesses of 24" sch 40 tee
urgent need of thicknesses of 24" sch 40 tee
(OP)
URGENT
We erect a lot of "standard" tees in our HRSG but never received detailed thicknesses. We urgently need the various thickness of the 24" sch 40 tee (fitting) to evaluate by ourself the conformity of our tees.
thanks
We erect a lot of "standard" tees in our HRSG but never received detailed thicknesses. We urgently need the various thickness of the 24" sch 40 tee (fitting) to evaluate by ourself the conformity of our tees.
thanks





RE: urgent need of thicknesses of 24" sch 40 tee
http:
David Baird
Sr Controls Designer
EET degree.
Journeyman Electrician.
RE: urgent need of thicknesses of 24" sch 40 tee
Related threads:
thread292-127371
thread378-122201
jt
RE: urgent need of thicknesses of 24" sch 40 tee
Best regards
Morten
RE: urgent need of thicknesses of 24" sch 40 tee
the thicknesses can be up to 1.5 the pipe thickness, and it is a manugacturer knowledge, but if it is a "standard" tee, I think that it will not be a great difference between manufacturers.
the thicker parts have to be the 45 degree of the neck and after this the meridian line.
NEED URGENTLY
THANKS
RE: urgent need of thicknesses of 24" sch 40 tee
RE: urgent need of thicknesses of 24" sch 40 tee
RE: urgent need of thicknesses of 24" sch 40 tee
Since you're looking for "standard" measurements to compare with "as-received" pieces, I think that for the most part you're not going to find that information.
I'll ask one question of you - why do you need this information? Do you have tees failing on you? Are the failures a direct cause of insufficient thickness? This is starting to smell like an exercise dreamed up by a pointy-haired boss.
RE: urgent need of thicknesses of 24" sch 40 tee
thanks, I learn a lot
Specially to JTE that send me to related threads ( I am not alone...and the JOHNBREEN answer was very interresting) and to the "Good luck" of TGS4.
friendly
huguette
RE: urgent need of thicknesses of 24" sch 40 tee
I know e.g. also in the very old Crane manuals, outlet "nozzles" were either "Standard" (fabricated with straight pipe, no reinforcement)) or "Reinforced" in some fashion (pads, collars, wrapper plates ,etc. as required by the service pressure) Forged steel fittings such as tees then appeared referred to not by schedule, but by rating in "Pound class" etc. (these would indeed have variable thickness depending on configuration/working pressure etc.)
While I don't doubt it is now done, it just seems strange to refer to a tee fitting by "schedule", particularly if the pressure conditions require that a standard schedule thickness is not adequate!
RE: urgent need of thicknesses of 24" sch 40 tee
RE: urgent need of thicknesses of 24" sch 40 tee
jte is correct (please look at the references). VERY LITTLE GEOMETRY IS "STANDARDIZED" BY THE ANSI B-16.9 STANDARD FOR WELDING FITTINGS. Also, many manufacturers consider thickness information to be "proprietary" (don't bother asking them). If any two manufacturer's fittings have the same thickness at the same relative location around the fitting it is purely by coincidence.
Actually, if you compare a fitting manufactured to ANSI B16.9 to the ASME "area replacement" rules for fabricated branch connections you will see that the fittings will not comply - yes, they are stronger but due to due to material (grain) continuity (and the radius at the "crotch"). One thing is certain and that is that the fitting's wall thickness will be greater that the (same schedule) matching pipe at all locations other than the weld line. How much thicker? It depends upon the manufacturer. Perhaps more importantly, the general shape of the TEE fitting will differ greatly from manufacturer to manufacturer - some will be very "cylinder-to-cylinder" in shape, some will be "barrel shaped" and some will have pronounce "spherical cheeks". The radii at the crotch will also vary greatly and the thickness at the crotch will also vary.
Fittings are required by ANSI B16.9 to be able to pass a burst test. They are made so that if you weld a fitting (i.e., TEE, elbow,.....) between two pieces of straight pipe and pressurize the weldment to destruction, the straight pipe will fail before the fitting.
So, what is the wall thickness of a "Standard" ANSI B16.9, schedule 40, TEE? First of all it varies around the fitting and also only the UT thickness gage knows for sure.
Regards, John.
RE: urgent need of thicknesses of 24" sch 40 tee
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KB
RE: urgent need of thicknesses of 24" sch 40 tee
Yup, they don't mention that the "T" thickness dimension is wall thickness at the ends of the tee until you jump to their tolerances page and look at Note 3: http:/
The thickness is not uniform throughout the tee.
jt