HP Steam piping

[yaar123]

I have HP steam piping with pressure 120 bar and temperature around 375 deg C. What kind of piping material would bev suitable??
Please share your experience. Any specific comment if I will use SA 53 Gr B??

 

[curtis2004]

Where are you planning to install this line? What are pipe sizes we are talking about? Does the facility has an owner? Does the owner has piping material specs?
I think, A106 Gr.6 seems more approptiate from for the service conditions.

 

[uaepiping]

In my experience, I have seen ASTM A335 P11 and ASTM A106 Gr. B. But I have not seen ASTM A53 Gr. B for high pressure steam.
Try to put this query in material forums.

 

[weldstan]

06B and A106C are most commonly used for this service. In the last 20 years in which I have been involved with over 75 Power Projects, I have never seen A-53 B specified for this service.

 

[MJCronin]

At 375C(707F) you are near the transition point defined by ASMEB31.1/B31.3 where chrome-moly material is required.

http://www.eng-tips.com/viewthread.cfm?qid=389192

SA106 B/C material is a seamless piping material recommended for this lower temperature steam service. It has been specified specifically for steam service for many, many decades.

A53B is also a carbon steel piping material that may or may not be seamless

At 120 bar, you have a significant pressure system. This design pressure will control your pipe wall thickness.

Suggest that you purchase and review the "Piping Handbook" by Nayaar. It has a chapter on steam piping systems.

MJCronin
Sr. Process Engineer