Project Overview

Bellows Systems, Inc. recently designed and delivered high-pressure reinforced expansion joints for a leading power generation plant, specifically for boiler piping applications. These expansion joints were engineered to handle extreme temperatures, high pressures, and thermal expansion, ensuring seamless performance and enhanced operational reliability.

The project scope included three size variants (6″, 4″, and 2″), each built using high-grade stainless steel and Inconel 625 to withstand aggressive operating conditions. With reinforced root rings and RTJ flanges, these expansion joints provide exceptional leak-proof performance and extended service life in demanding power plant environments.

Specifications of Delivered High-Pressure Reinforced Expansion Joints

Specification 6″ Expansion Joint 4″ Reinforced Expansion Joint 2″ Reinforced Expansion Joint
Overall Length 14.13″ 23.5″ 14″
Flanges 6″ Class 600# RTJ, Both Welded 4″ Class 1500# RTJ, Both Welded 2″ Class 1500# RTJ, Both Welded
Bellows Material ASTM A240 Gr. 316 ASTM A240 Gr. 321 Inconel 625
Root Ring Material ASTM A240 Gr. 304 ASTM A240 Gr. 304 ASTM A240 Gr. 304
Flanges Material ASTM A105 ASTM A105 ASTM A105
Pressure 500 psi 2,000 psi 2,000 psi
Temperature 470°F 637°F 637°F
Axial Movement 1.1″ 1″ 1″

Engineering & Testing Excellence

To guarantee safety and durability, each expansion joint was subjected to rigorous quality control and performance testing, including:

  • Dye Penetrant Testing – Detecting any imperfections in welds and metal surfaces.
  • Hydrostatic Pressure Testing – Ensuring structural integrity under real-world pressure conditions.
  • Dimensional Accuracy Check – Verifying compliance with client specifications and industry standards.

These testing protocols ensure reliable and long-lasting performance in high-temperature and high-pressure boiler applications.

Delivering Performance & Reliability

Bellows Systems, Inc. is a trusted leader in metal expansion joints and piping solutions for power generation, oil & gas, chemical processing, and industrial applications. Our commitment to engineering excellence and precision manufacturing allows us to deliver customized, high-performance solutions tailored to our clients’ needs.

Looking for a custom-engineered expansion joint solution for your next project? Contact us today!