Hardness Test - How many readings should be performed per welded pipe diameter?
Hardness Test - How many readings should be performed per welded pipe diameter?
(OP)
Dear Sirs.
I would appreciate your help or advice regarding readings of hardness to be performed in a welded pipe in a HRSG.
I've found some information of the vendor that indicates that in a welded pipe (if the diameter is above 6 inches) it must be carried out 3 readings at 0º - 120º - 240º.
I was searching on ASME I or B31.1 and there dont mention about mínimum of readings to be performed. that is why I ask for some help to you guys.
I think that if vendor approves that just 2 readings are enough, so there is not a problem.
Readings of hardness are within material's requirements.
I would appreciate your help or advice regarding readings of hardness to be performed in a welded pipe in a HRSG.
I've found some information of the vendor that indicates that in a welded pipe (if the diameter is above 6 inches) it must be carried out 3 readings at 0º - 120º - 240º.
I was searching on ASME I or B31.1 and there dont mention about mínimum of readings to be performed. that is why I ask for some help to you guys.
I think that if vendor approves that just 2 readings are enough, so there is not a problem.
Readings of hardness are within material's requirements.





RE: Hardness Test - How many readings should be performed per welded pipe diameter?
RE: Hardness Test - How many readings should be performed per welded pipe diameter?
RE: Hardness Test - How many readings should be performed per welded pipe diameter?
RE: Hardness Test - How many readings should be performed per welded pipe diameter?
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P.E. Metallurgy, Plymouth Tube
RE: Hardness Test - How many readings should be performed per welded pipe diameter?
Regards
r6155
RE: Hardness Test - How many readings should be performed per welded pipe diameter?
do you have any docs or recommended practice that indicates 3 readings per welded joint?
I've searched on website and I cannnot find any recommended practice that specified this quantity.
In my opinion 3 tests seems good
RE: Hardness Test - How many readings should be performed per welded pipe diameter?
RE: Hardness Test - How many readings should be performed per welded pipe diameter?
hardness tested. A minimum of 5% should be hardness tested, unless otherwise specified by the user.
Regards
r6155