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  • Users: rothrock
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  1. rothrock

    304L Passivation

    I once read that stainless steel naturally passivates and that chemical passivation is more cosmetic than necessay to develop a passive layer. Is this true? If a 304L pipe has been exposed internally to salt water and then the saltwater removed and the pipe is refilled with jet fuel, will any...
  2. rothrock

    SS Anchor Bolts and Galvanized Base Plates

    A piping system design in a near marine tropical environment uses galvanized steel supports bolted to concrete foundations with stainless steel anchor bolts (ASTM A192 gr. B8). The engineer is now concerned about dissimilar metal corrosion and wants the contact areas between the two metals...
  3. rothrock

    304L coated pipe buried in tidal water zone

    We are installing 14" diameter fuel distribution pipe with a PE coating for an air base. The trenches are dug deep enough that prior to back fill tide influenced brackish groundwater can submerge the pipe. The owner has told us that allowing the brackish water to come in to contact with...

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