Dear all,
I have problem there are stud mark 1 to 2 mm deep obersrved on flange ASTM A 350 LF1 CL 1 due to overtightening while hydro testing.
As there is leakage while testing still the test is not clear.
Equipment - Condenser
Hydrotest press.- 33 bar(g )
Stud - ASTM A 194 GR. 8
Nut - ASTM A 193 B 8
Can anybody suggest how to rectify it & what are the reason behind it.
With Regards,
Nilesh
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