June 12, 2025

High-Pressure U-Stamp Expansion Joint for KBR-licensed fertilizer plant in Egypt

High-Pressure U-Stamp Expansion Joint for KBR-licensed fertilizer plant in Egypt

We have successfully completed the design and fabrication of a High-Performance Expansion Joint for a fertilizer plant licensed by KBR, following a dedicated audit by the licensor. This unit is specifically engineered to operate under extreme service conditions and was manufactured in full compliance with ASME Section VIII Division 1, bearing the U Stamp certification.

Key features of this expansion joint include:

  • Design Code: ASME VIII Div.1, APP. 26 & ASME VIII Div.2, 4.19 - Edition 2023
  • Size DN 1350
  • Hydroformed bellows made of Alloy 625 Gr. 2
  • Design pressure: 42.70 barg (619.31 psig)
  • Test pressure: 64.05 barg (928.97 psig)
  • Design temperature: 399 °C (750 °F)
  • Medium: Hydrogen + hydrocarbons
  • U Stamp certified under ASME VIII Div.1
  • Integral equalizing and reinforcing rings machined in a single piece
  • Extensive NDT and PMI testing per KBR standards

The assembly, incorporating a robust tie rod system and shipping rods for pre-compression, was fully hydrotested at MACOGA's facilities. A comprehensive documentation package was provided to the client, including radiographic testing, liquid penetrant inspection, PMI, dimensional checks, and complete material traceability.

This project reinforces MACOGA’s reputation as a trusted manufacturer of engineered Expansion Joints for high-demand applications in the fertilizer, petrochemical, and energy sectors.

More information https://www.macoga.com/en/expansion-joints-for-specific-applications/fertilizers