It is not so simple as you describe it. It is a combination of total loss of back reflection with continuous indications.
Read 8.1 carefully and make a sketch of your indications
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Dr. Georgios Dilintas
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Ali Asghari ---02/02/2015 11:39:57---Dear All In lamination check by straight probe , some lamination and inclusion
From: Ali Asghari <asgharialigl@gmail.com>
To: materials-welding@googlegroups.com
Date: 02/02/2015 11:39
Subject: [MW:22789] ASTM A 578 LEVEL B
Sent by: materials-welding@googlegroups.com
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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