Some of your terms arn't found in the list, so
a) Brush pig: see cleaning pig
b) Gauging pig see listing
c) Cup Pig often used for separating two fluids, as in batching pig
d) Foam Pig used for semi-drying soaking up liquids, such as after a hydrotest
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"The problem isn't finding the solution, its trying to get to the real question." BigInch