Enter the minimum thickness of the actual plate or pipe used to build the vessel, or the minimum thickness measured for an existing vessel. Many pipe materials have a minimum specified wall thickness which is 87.5% of the nominal wall thickness. Some commonly used thicknesses are:
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0.0625 - 1/16 "
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0.1250 - 1/8 "
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0.2500 - 1/4 "
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0.3750 - 3/8 "
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0.4375 - 7/16 "
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0.5000 - 1/2 "
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0.6250 - 5/8 "
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0.7500 - 3/4 "
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0.8750 - 7/8 "
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1.0000 - 1 "