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  • Users: Jinunim
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  1. Jinunim

    Allowable Stress Value for ASTM A155

    I'm working on old refinery revamping project, and I need to tie-in from ASTM A155 Gr.C55 CL.I. The material has been replaced in 1978 so, I cannot find any allowable stress values. Few days back in #thread292-16187, A155 allowable stress value is available in ASME B31.3- 1976. So, I'd like to...
  2. Jinunim

    Hot Tapping Hydrotest Buckling Calculation

    I am working on an external pressure calculation for a hot tap during hydrotest. To derive Factor B&A I need L/Do and Do/t according to equation is from ASME Sec. VIII, Div. 1, UG-28. In case of vessel, the "L" value is specified as length between stiffening ring but what about for pipe? I...

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