ASME Vessels

Code Stamps and Authorizations 

American Society of Mechanical Engineers:

            “A”  Stamp for Assembly                                Certificate   #     A1176

            “M”  Stamp for Miniature Boilers                      Certificate   #     3919

            “PP” Stamp for Pressure Piping                      Certificate   #     12,068

            “S”   Stamp for Power Boilers                          Certificate   #     4996

            “R”  Stamp for Boiler & Pressure                      Certificate  #     R 69

            “U”  Stamp for Pressure Vessels                     Certificate   #     605

            “H”  Stamp for Heating Boilers                         Certificate   #    17,995

American Petroleum Institute:

            API-650 Welded Steel Tanks for Oil Storage

            API-653 Tank Inspection, Repair, Alteration, and Reconstruction

            API-620 Large Welded Low Pressure Storage Tanks

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