We are in process of ordering a guyed mast tower (meteorological tower) from China. The supplier has said that all structural material would be Q235B. Can body give me the equivalent in ASTM.
For ASME NB ,What is the requirement of Impact testing for A 182 F22. Does it is mandatory for all forging parts above 5/8 inch thickness. Is there a limiting temperature above which Impact test is not required?. What is MDMT of this material. If i am using it above 40 C , do i have to perform...
I have been asked by my plant engineer to procure ASME Class 1 & Class 2 Pipe fitting. I have searched the market and found some suppliers. One of them is having ASME QSC certificate. Does his products can be used in Class 1 & 2 application. Or i need to have a supplier having NPT certificate, a...
Thank you very much for all the informative advice. Can anybody comment on the surface finish we should consider for the Babbitt ID surface in mm system.
Regards.
Ok, i am attaching the view of Bearing. Please have a look at it.
Regardshttp://files.engineering.com/getfile.aspx?folder=324a22cc-ceb0-42e0-ac1a-7b984699790f&file=S3x.pdf
Dear Fellows
We have a Babbitt lined journal bearing with excessive wear. Now we want to re-Babbitt the bearing. For the re-babbiting we have to give finished ID to be maintained. The shaft dia (journal) is 330 mm, with a speed of 3000 rpm.It is an oil lubricated bearing. What should be the ID...
In our power plant , at one location we have a ASTM A 106 pipe of size 1 ¼ , sch 80 is running. Water with a pressure of 1550 psig at a temperature of 550 F runs through it. During an inspection when the plant was in shut down state ( pipe having atmospheric conditions and filled with normal...
Thanks again.
What about the other two properties, the %age elongation and Hardness. The % age elongation has decreased and the hardness has increased from the maximum permissible in ASTM. Does the rise in hardness and decrease in % age elongation shows a decrease in ductility. So now the tube...
Thank you very much for the kind replies.
No appreciable denting or wall thinning is visible on the the pulled tube.Vibrations are in safe zone. We have 5 tube leakages in a bundle of 1875 U-Tubes in 30 years history.
However, the tubes are as per ASTM B 163 (UNS N04400), which gives Y.S 193...
I am a maintenance engineer in a power plant. We have heat exchangers in our process water cooling circuit. The heat exchangers have Monel 400 material tubes. These heat exchangers have given us excellent service for last 30 plus years. Now we want to assess the tube material condition to check...
I am a maintenance engineer in a power plant. We have heat exchangers in our process water cooling circuit. The heat exchangers have Monel 400 material tubes. These heat exchangers have given us excellent service for last 30 plus years. Now we want to assess the tube material condition to check...
