ASME v PED Certification – Key Differences

The American Society of Mechanical Engineers (ASME) is a not-for-profit professional organization promoting the art, science and practice of mechanical engineering. ASME develops codes and standards that enhance public safety, and provides lifelong learning & technical exchange opportunities benefiting the mechanical engineering community.


The Pressure Equipment Directive (PED) is a European legislation aimed at removing the technical barriers to trade relating to the supply of pressure equipment throughout Europe. It is based on Essential Safety Requirements (ESRs) that govern design, manufacturing, inspection & testing.

Pressure vessels made for US companies follow ASME while those destined for Europe are governed by PED. The latter is mandatory for the European Union. The documentation requirements for PED are a bit more stringent. There are also different costs associated with the various PED categories & modules depending on volume, pressure & hazardous/non-hazardous gas / fluid.

There are no major technical differences between the two system requirements for material testing. But while the two system designs are slightly different, they both provide “good engineering” practices assuring the production of sound pressure equipment.

BEPeterson ASME vessels are designed & fabricated following the guidelines and protocol of the ASME Code guidelines. All material test certificates (MTR’s) and ASME forms are made available with every vessel.

In addition, BEP can build your PED pressure vessel here in the United States and ship to any country in the European Union with PED certification compliance. To further ensure the quality of our PED vessels, BEPeterson is ISO 9001:2015 certified. All PED vessels are supplied with full documentation including material test reports (MTR’s), Hydrotest reports, RT (xray) test results, and full dimensional reports. BEPeterson is also certified for ASME and TUV.