Get Manufacturer Data Report

The ASME U Stamp is an indication that the pressure vessels adhere to ASME's guidelines including design, fabrication, inspection, and testing. It is used for the certification and acceptance of pressure vessels. Seeing the “U” symbol on a product ensures that it meets the latest edition of the Code.

Often referred to as the “birth certificate” of a pressure vessel or heat exchanger, the data report (U-1 or U-1A, U-3 form) is a document supplied by the manufacturer which describes the specifications, materials used, types of welding employed, etc., for the construction of an ASME certified vessel or heat exchanger.

(Alternative Form for Single-Chamber, Completely Shop- or Field-Fabricated Vessels Only) As Required by the Provisions of the ASME Boiler and Pressure Vessel Code Rules, Section VIII, Division 1.

ASME is the American Society of Mechanical Engineers. This organization pressure-tests vessels and tags them with a U-1 stamp that's registered with a National Board number.

As Required by the Provisions of the ASME Code Rules, Section I. 1. Manufactured by. (Name and address of manufacturer)

U Stamp. The U stamp certifies that a manufacturer meets the quality control system requirements laid out in the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code (BPVC). Manufacturers with this stamp are permitted to design, fabricate, inspect, and test unfired pressure vessels.

The “U” stamp is for the “Fabrication of New Pressure Vessels”. The “R” stamp is for the “Repairs & Alterations of Pressure Vessels”. These stamps signify IAM's processes for the fabrication and repairs of ASME pressure vessels.

(Alternative Form for Single-Chamber, Completely Shop- or Field-Fabricated Vessels Only) As Required by the Provisions of the ASME Boiler and Pressure Vessel Code Rules, Section VIII, Division 1.