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Can anyone tell me the dimensions of a 6", 90 degree, socket weld pipe fitting? Or advise where this info can be found? Thanks
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ive been in piping contn'/fab/design since the 70's and thebiggest size of sw ell ive seen is 2" 9000. ive checked by old ladish/vogt catalog and max size is 2" also. not satisfied, ive look up the sherwood piping guide - table also show a max of 2".
but why have it custom made and cost u an arm and leg when a bw elbow would also probably do the job.
but why have it custom made and cost u an arm and leg when a bw elbow would also probably do the job.
As discussed by many above, i also have an opinion that socket weld fittings in 6" size are not standard manufactured items and hence it will be difficult to tell you the dimension as it is not a standard item. However butt welded pipe fittings of 6" size are standard items whose end to end dimensions can be checked in ANSI/ASME B 16.9
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Hello all,
Perhaps a more important issue for non-standard fittings would be Code pressure design.
I you use a standard B16.11 (only up to NPS 4) socket welding fitting, the fitting is prequalified for the pressure/temperature class (assume the class is chosen correctly). If you use a B16.9 butt welding fitting of a certain schedule, it is similarly prequalified for the matching pipe schedule. Sometimes we take this for granted.
If you use a non-standard fitting in a B31.3 piping system, it must be qualified for pressure design to the requirement$ of paragraph 304.7.2 and thi$ colul get very expen$ive.
Regards, John.
Perhaps a more important issue for non-standard fittings would be Code pressure design.
I you use a standard B16.11 (only up to NPS 4) socket welding fitting, the fitting is prequalified for the pressure/temperature class (assume the class is chosen correctly). If you use a B16.9 butt welding fitting of a certain schedule, it is similarly prequalified for the matching pipe schedule. Sometimes we take this for granted.
If you use a non-standard fitting in a B31.3 piping system, it must be qualified for pressure design to the requirement$ of paragraph 304.7.2 and thi$ colul get very expen$ive.
Regards, John.
311.2.4 of b31.3
precautinoary note. sw larger than dn 50 (nps 2) shall not be used under severe cyclic condition.
even if this is a one-off application, it hardly justify the cost and effort. propabaly u may have to make adjustment also to the wps (pipe range). but if youre involve in piping layout design, normally u would not want the designer to check out every now and then whether the service is cyclic condition or not, so u put a cap - its a no no for 2 inches. a fillet all around weld joint on a 4 inch or above line would probably require qualififcation - not a full penetration.
precautinoary note. sw larger than dn 50 (nps 2) shall not be used under severe cyclic condition.
even if this is a one-off application, it hardly justify the cost and effort. propabaly u may have to make adjustment also to the wps (pipe range). but if youre involve in piping layout design, normally u would not want the designer to check out every now and then whether the service is cyclic condition or not, so u put a cap - its a no no for 2 inches. a fillet all around weld joint on a 4 inch or above line would probably require qualififcation - not a full penetration.
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