Schedule 160 pipe pressure rating
Schedule 160 pipe pressure rating
(OP)
Hi. I can't get my hands on a copy of the ANSI standards - can anyone supply this info? I need to know MAWP and burst pressure for 3/4" Sch160 304SS pipe. A copy of the applicable page would be tremendous!
Thanks!
Thanks!





RE: Schedule 160 pipe pressure rating
So redirect your question to ASME for piping standards. Now, what industry? There are different piping standards for different industries. Boilers apply a different standard than refineries and pipelines.
Piping engineers calculate the value of wall thickness suitable for conditions required. Then select a thickness from the schedules of nominal thickness depending upon the pipe specification, such as ASME B36.19M for stainless.
Different pipe tolerances exist. ASME B31.3 section 304 PRESSURE DESIGN OF COMPONENTS addresses pressure design for straight pipe on page 19 with a table with factors including Austenitic steels on page 20. The next thing to consider is temperature. Then, different stuff applies to bends, etc. See TABLE 326.1, COMPONENT STANDARDS. This refers to other standards including ASME B36.19M for stainless steel pipe.
This explanation does not get you to the answer thus may not help much. If you don't get a better answer, try the ASME in the codes and standards section.
John
RE: Schedule 160 pipe pressure rating
It all depends on the maximum operating temperature (and other factors)that you establish.....
Piping does not have an "MAWP" like a pressure vessel. ASME B31.1 requires that you (1) select an ASME approved material (2) calculate a minimum wall thisckness based upon your allowable stress and corrosion/threading allowances (3) select your pipe schedule
hope that this helps....
MJC
RE: Schedule 160 pipe pressure rating
I'm still looking for a local library that has the ASME B31.3 or Becht's guide to the B31.3. This is an existing pipe, recently installed, used intermittently for high pressure water service (~10,000psi). We just want to comfort ourselves with the knowledge that we're under the burst pressure.
-Fran
Fran McConville
author of the Pilot Plant Real Book
www.pprbook.com
RE: Schedule 160 pipe pressure rating
RE: Schedule 160 pipe pressure rating
Fran McConville
author of the Pilot Plant Real Book
www.pprbook.com
RE: Schedule 160 pipe pressure rating
What is the temperature? I would be uncomfortable based upon the post by TBP.
Perhaps someone with a water piping specification that exceeds 10000 psi might advise the wall thickness and design temperature for the spec requirements in 3/4-inch. Perhaps they canverify that B31.3 is used to calculate the required wall thickness. This could get you to the right standard.
John
RE: Schedule 160 pipe pressure rating
-Fran
Fran McConville
author of the Pilot Plant Real Book
www.pprbook.com
RE: Schedule 160 pipe pressure rating
RE: Schedule 160 pipe pressure rating
In my understanding, if you conform to B31.3, you should not use bursting pressure for limit the allowable working pressure.
Allowable stress from B31.3 should be used for calculation. You should clarify your "intermittent high pressure service condition".
Moreover, please confirm that pipe is the weakest component in your piping system.
RE: Schedule 160 pipe pressure rating
Good luck
RE: Schedule 160 pipe pressure rating
http://www.engineersedge.com/pipe_bust_calc.htm
RE: Schedule 160 pipe pressure rating
Fran McConville
RE: Schedule 160 pipe pressure rating