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Re: [MW:26963] Acceptance criteria for piping sagging and alignment

My reply may be pertaining to Inspection but if you are looking for Design point then a Piping Engineer may be in a better position to answer.

Normally Straightness measured can take care of Sagging and Alignment. Please refer to ASME Sec.IIA  SA530. Snap shot provided below.

Inline image



Thanks & Regards

J.Gerald Jayakumar

0091-9344954677



On Friday, November 3, 2017, 2:24:48 PM GMT+4, Amul Raj <win.amul@gmail.com> wrote:


As per ASME sec B31.3 Process Piping

CS -  ASTM A106 Grade B
LTCS - ASTM A333 Grade 6
Low Alloy - ASTM A335 Grades P11, P22, P5, & P9
High Alloy - ASTM A321(312) Grades 304L,316L, 347, 321 Stab HT

What acceptance criteria for sagging and linear alignment

My concern about the concentration of hoop stress increase, pressure loses, turbulence flow, fatigue... Etc

Please looking forward your valuable response

Thank and Warm Regards


Amul Raj T

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