Monday, February 2, 2015

[MW:22789] ASTM A 578 LEVEL B

Dear All
In lamination check by straight probe , some lamination and inclusion detected but they have a echo height less that 15%. Acceptance of project is level B of ASTM A578.
Now  I want to know in 8.2 of A578 , small discontinuities must have total loss of back reflection or not?
Grade of material is API 2H GR 50 Z.
Regards.

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