Recent content by KD007

Hello All, I am designing carbon steel heat exchanger however the tube and tubesheet material is specified as Type 405/410S on client dataset but I am not able to find equivalent grades in asme code. As TP 410S is only available in plate material and TP 405 material is only available for tube...

Hello jt1234, Thankyou for feedback. Just to clarify I would be for sure using "M" grade bolting for application, just wanted to know if there are other higher strength Carbon steel bolting material except SA-193 Gr.B7M and SA-320 Gr.L7M which we can use in Sour service/H2S service requirement...

DP - 42 kg/cm2 and DT- 320 Deg C

B7M bolting requirement is coming from client specs only.

Hello Si-bo, Thanks for the reply. Above solution can be practical for large flanges however it would not be viable solution to design standard small size flanges i.e from 2" to 14" as per Appendix 2 everytime when the no of flanges is more in equipment. I just need alternative higher strength...

Hello TGS4, With B7M bolting I am getting error for UG44b clause error message. Also as per client specs they have mentioned to use bolt with "M" grade for H2S service. Also same bolts have been used in connected piping PMS specs. Have you used any other higher allowable CS bolting material for...

Any suggestions on above query based on your experience with sour service vessel with high pressure? Need your expertise on same.

Hello TGS4, Yes you are right code case 2901-1 wont help. The vessel which I am designing is carbon steel vessel for which I guess typically we have used B7M bolting only. Can we use B8M (S.S) bolting in CS vessel with wet H2S service? Isnt there any other CS bolting grade with higher allowable...

Hello All, I have to design high pressure vessel as per Div 1 for wet H2S service in which bolt material requirement is to use 'M' grade material for bolt i.e SA-193 Gr.B7M. However when using UG44b for flange derating the B7M bolting is not fulfilling the requirement of having higher allowable...