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[MW:16586] Leakage during Silo Pneumatic test at 1 bar

By Materials & Welding
Dear Experts,
 
We are trying to do Pneumatic testing of SS silos (4mmthk shell thk) 3.5m dia x 12.0m Long
 
We are observing leakage at plate flange of bottom Cone .
 
Gasket used is 3mm rubber..
 
Can you suggest on this issue...
 
Silos is foe wheat storage application
 
Water fill test is not being done due to less thickness 3 or 4mm
 
Ali Mhaskar

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