Expansion Joints for PTA Plant-Hinged & Gimbal Type
A comprehensive package of Hinged and Gimbal Expansion Joints was engineered and supplied for process piping in a PTA (Purified Terephthalic Acid) plant. The bellows were manufactured using high-performance Alloy 625 or equivalent grades, including UNS No. 6625, with internal lining of C276 for enhanced corrosion resistance. The design incorporated 2-ply testable bellows with leak detection capabilities for the inner ply, ensuring the highest level of safety and reliability. All wetted parts were constructed using dual grade stainless steel. The plant operates under a process license from BP, reflecting stringent engineering and quality standards.
Expansion Joints for PTA
Tied Lateral, Hinged & Gimbal Expansion Joints for HDPE/LLDPE Plant
In an HDPE/LLDPE plant, a package of 42” Tied Lateral, Hinged, and Gimbal Expansion Joints was developed for Cycle Gas Compressor piping. These bellows were made from Alloy 600, incorporating 2-ply testable technology with a leak detector to monitor inner ply integrity. The hinges were designed with special low-friction bushes, facilitating smooth articulation with minimal resistance. Additionally, each unit featured a removable full-bore sleeve to ensure uninterrupted flow of semi-solid particles, enhancing operational efficiency and system longevity.
42″ Tied Lateral, Hinged & Gimbal Expansion Joints for
Cycle Gas Compressor Piping in HDPE/ LLDPE Plant
Externally Pressurized Expansion Joints
for Catalyst Regeneration System
A specialized set of Externally Pressurized Expansion Joints was supplied for the catalyst regeneration system, designed to accommodate substantial axial movement under extreme pressure and temperature conditions. The bellows were crafted from Alloy 625 and featured a 2-ply testable construction with integrated leak detection. The connecting components were fabricated using 321-grade stainless steel, offering robust mechanical strength and high temperature performance suitable for the harsh service environment.
Catalyst Regeneration System
Expansion Joints for Flare Stacks
Multiple expansion joints were manufactured and delivered for use in Flare Stack applications. The bellows were constructed using Alloy 800, known for its superior resistance to oxidation and high temperatures. All remaining components were made from 316-grade stainless steel, ensuring durability and corrosion resistance in the demanding flare stack environment.
