Line pipe grade and schedule identification
Line pipe grade and schedule identification
(OP)
Is there a way to determine what grade and schedule of line pipe has been used in an installation by inspection, using nondestructive methods? I assume the wall thickness could be determined by ultrasonic measurement. With that information and the OD, one could identify the schedule. But what about pipe grade determination?





RE: Line pipe grade and schedule identification
I don't know if it would tell you enough to be able to, for example, identify A-516 Gr 70 from another grade of A-516.
RE: Line pipe grade and schedule identification
Once you have that info you can go to a ASME sec. 9 Qw/Qb 422 and find a simular metal to better guess the type/grade. Once you approximate the grade, you should be able to go threw the MDR,MDS,MTR's (material data, reports, material reveiving logs.) and figure out what it was.
For the thickness of the pipe the NDE tech can do a UT thichness test on the pipe. (make sure they take a few readings and average them out, incase the pipe has been in service,corroded, erroded, and lost thickness.
RE: Line pipe grade and schedule identification