ASTM A53 B Black Carbon Steel Pipe_size 24" 4 - Eng-Tips

Hello BGD011

The maximum allowable pressure for pipe of various materials is a function of the pipe diameter and the wall thickness. It also depends upon the temperature of the pipe at the required maximum temperatures and it depends upon the method of manufacture (seamless or seam welded and what type of seam weld was used). You should also give some thought to how much corrosion allowance should be addressed in the calculation. If you would provide all the required information I would guess someone would run the (easy) calculation for you. Just remember that YOU will be responsible for the design even if somebody else gives you your answer.

Regards, John. Thank you both for the help!

I know that temperature of the fluid (cold water in this case, T<68^F) is important parameter. I also know for Barlow’s formula (it is not too good, talking about the bursting pressure and it does not include the pipe material, fluid temperature, pipe seamless or not,…)

What I do not understand is that the table on the above link has listed the pipe diameters only up to 20”!? What about the larger ones?

Thanks for the comment that I should be responsible for the project. It is one of the reasons why I would like to see what ASTM says that it should be the maximum working pressure for a 24” Black Steel Pipe A53 B ERW PBE, Sch.20ST?

Could you, please send me that "ASME B31.1" formula?

The equation that Nozzle & Breen are referring to is also in the NAVCO Piping Datalog--page 17 of Edition No. 11

Previous thread lists info to order a copy
thread378-

Recommend that you procure a copy

BTW--page 29 of the above referenced Datalog
Pressure-Temperature Ratings
Plain End SEAMLESS Carbon Steel pipe A53 Gr B Sch 20
Temp range (-)20 to 650 deg F
max working pressure is 415 psig
HOWEVER, YOU SHOULD PERFORM THE CALCULATION AS MENTIONED BY NOZZLE and BREEN
BGD011

The thing to remember is that all pressure piping is designed to the prevailing Codes and Standards. The equations cited above in the Datalog come from B31 Pressure Piping Codes. You will note that the cited equations include the allowable stress at temperature for the material and this data comes from Appendix A of the B31 Codes.

The Datalog is a very useful publication (I use it every day).....


.....but remember the Datalog cannot show the latest Code values for allowable stress for all materials (the B31 Codes have changed some of thes SE values after the most recent Datalog was issued). In the case of the specific material that you are using, you are OK with the value for SE shown in the datalog but do not always take that for granted with other materials.

Regards, John. You ask the question:

What I do not understand is that the table on the above link has listed the pipe diameters only up to 20”!? What about the larger ones?

Note that on the Engineering Toolbox page that you cite there is a blue hypertext reference to ASME/ANSI B 36.10. This type of pipe is manufactured to the B36.10 Standard and if you click on the hypertext you will be taken to a page that shows diameters and associared wall thicknesses up to 42 inches. When web sites are limited by available space (bandwidth) they will provide the most commonly used data.

Regards, John