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Hastelloy® Piping Installation for Sodium Hydroxide System

Written by Admin | Apr 29, 2026 10:37:06 PM

The Challenge


High Purity Systems’ (HPS) fabrication services, clean system installations, welding capabilities, and extensive industry knowledge recently won our team a fabrication and installation project with a leading water and wastewater management service provider.

The customer, a general contractor working with a water and wastewater treatment plant, needed to install Hastelloy® piping for its sulfuric acid and sodium hydroxide systems. Neither the contractor nor the end user had much experience with this material, whose exotic nature posed huge risks of welding failures and added costs. Unable to find anyone capable of welding Hastelloy® pipe, the customer turned to the welding experts at HPS.

The Strategy


Not only did HPS have the experience and qualifications to work with this rare piping material, but we were able to adjust our project schedule to fit the customer’s needs, as well as fabricate much of the work offsite to minimize congestion on the project. We visited the customer’s site to detail the piping, then fabricated as much as possible in our Manassas, Virginia pipe fabrication shop before returning to the site for installation.

Using pipe cutting equipment and TIG welding machines, HPS installed 200 linear feet of the 0.75” Hastelloy® 40 pipe, and when complete our team pressure tested the entire installation to ensure that it met American Society of Mechanical Engineers (ASME) B31.3 power piping standards.