Wednesday, January 20, 2010

[MW:4105] Pitting acceptance criteria

Dear all,
 
We received one 40" elbow (ASME 16.9) ASTM A 860 material having so much pitting on full external surface. Which standard we can refer for the acceptance criteria? 
 
 
I referred in ASTM A 860, its talks about only depth of surface discontinuity(5% of the nominal thickness),  there is no detail about the area of the pitting allowance.
 
Please help me on this issue. Very urgent
 
Regards,
 
Gulam Kader 
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