Precision Piping for Wastewater Treatment: GSM Industrial’s Thermal Hydrolysis System Fabrication in San Francisco

Project Overview

GSM Industrial was contracted to fabricate and assemble critical components for three Thermal Hydrolysis Systems used in an advanced wastewater treatment facility in San Francisco, California.

This project involved fabricating and assembling structural steelwork, staircases, platforms, handrails, and extensive 316 stainless steel process piping, including all valves and pipe supports.

Thermal hydrolysis systems play a key role in wastewater treatment, breaking down organic materials to improve biogas production and sludge management efficiency. The precision and quality of the fabrication were critical to ensuring smooth integration into the client’s existing infrastructure.

Project Challenges

This large-scale project required overcoming several fabrication and assembly challenges:

Complex Organization and Precision Tagging

Each of the three systems required extensive pipework, hardware, and components. Keeping every part properly tagged and organized was critical to prevent mix-ups during assembly.

Stringent Testing & Compliance

• All 316SS piping required hydrostatic testing and passivation to meet wastewater industry regulations.
• Piping racks featured top and bottom sections, which had to be pre-assembled before pipe hanging could begin.
• Every pipe and flange connection needed to align perfectly so that once it left the GSM Industrial shop there would be a seamless installation at the client’s facility.

Scaled Production for Efficiency

Unlike many competitors, GSM Industrial had the floor space and workforce to fabricate and assemble three full systems simultaneously, allowing for efficient execution and on-time delivery.

Key Project Stats

• 150+ Tons of steel and piping used
• 50 Tons of material per system
• 30 Feet finished piping system height
• Hundreds of feet of stainless steel welds
• Passivation & hydro testing completed in-house

Why GSM Industrial?

• Turnkey Capabilities: Fabrication, testing, and assembly are all completed in-house
• Expert Welders: Skilled stainless steel pipe welding for complex configurations
• On-Time Delivery: Ability to fabricate three full systems simultaneously
• Proven Track Record: Repeat business from a satisfied client

As with many of our projects, this was a return order from a company that previously partnered with GSM Industrial.

FAQ: Thermal Hydrolysis Processing Pipe & Fabrication

What is a thermal hydrolysis system used for?

A thermal hydrolysis system is used in wastewater treatment to break down organic material, improving sludge digestion and biogas production efficiency.

Why is 316 stainless steel used in wastewater treatment piping?

316SS is highly corrosion-resistant, making it ideal for harsh wastewater environments where durability and long-term performance are critical.

What testing is required for process piping in wastewater treatment?

Hydrostatic testing ensures that the piping system is leak-free and meets pressure requirements before installation. Passivation further protects the stainless steel from corrosion.

How does GSM Industrial ensure quality in large-scale piping projects?

We use strict quality control measures, pre-planning techniques, and expert welding procedures to meet the highest standards in industrial fabrication.

Looking for Custom Piping Fabrication?

Whether you are looking for piping fabrication or prefer turnkey industrial fabrication and field installation services. GSM Industrial has a proven track record in wastewater, manufacturing, and heavy industry

Contact us to learn more about this project or get a quote.