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sales@robenmfg.com
(732) 364-6000
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Home › Custom Exhaust Stack Fabrication

Custom Exhaust Stack Fabrication

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Roben, Mfg., Inc. specializes in the custom engineering and fabrication of exhaust stacks for chemical, fine chemical, petrochemical, pharmaceutical, food and beverage, defense, and power-generation industries. Every project is designed to ASME Section VIII Division 1 (with optional Division 2), is National Board registered, complies with the European Pressure Equipment Directive (PED 2014/68/EU) for CE marking, and is registered under the Canadian Registration Number (CRN) system for all Canadian provinces.

What Exhaust Stacks Are

An exhaust stack is a tall, vertical structure that vents combustion gases, process emissions, or scrubbed exhaust streams to the atmosphere at a sufficient height to ensure dispersion, regulatory compliance, and worker safety. Industrial exhaust stacks include process vents, flue-gas stacks, FCC regenerator stacks, gas-turbine exhaust stacks, and flare stacks.

Why Exhaust Stacks Matter

Exhaust stacks are required wherever combustion or process gases must be discharged to atmosphere — power plants, refineries, chemical plants, incinerators, and industrial boilers. Stack height, diameter, and metallurgy are dictated by emissions dispersion modeling, applicable air-quality regulations, and the chemistry of the exhaust stream.

Exhaust Stacks — Specifications and Capabilities

  • Heights: Custom — from 50 ft up to 500+ ft
  • Diameters: 24 in. up to 470 in.
  • Materials: Carbon steel (with internal lining if required), 304/316L stainless steel for corrosive flue gas, FRP-lined or refractory-lined for high-temperature service
  • Configurations: Self-supporting, guyed, tower-supported, derrick-supported
  • Engineered for: Wind loads, seismic loads, vortex shedding, FEA-verified

Certifications and Codes

  • ASME Section VIII Division 2 — available on request
  • National Board registration — R-stamp
  • PED 2014/68/EU — CE marking with Notified Body coordination
  • CRN — registered for all Canadian provinces
  • NACE MR0175 / ISO 15156 — sour-service compliance
  • AWS D1.1 / ASME Section IX — qualified welding procedures and welders

Frequently Asked Questions About Exhaust Stacks

Carbon steel is most common, with internal coatings or refractory lining for hot or corrosive service. 304/316L stainless steel is used for sulfur-rich or chloride-bearing flue gas. FRP and alloy linings are used for acid-condensing services.
Stacks are self-supporting (free-standing), guyed (with cables), or supported by an external structural tower or derrick. Roben designs the foundation, anchor bolts, and base ring as part of the package.
We perform wind-load and vortex-shedding calculations per ASCE 7, CICIND, or ASME STS-1. FEA verifies the dynamic response, and helical strakes or tuned mass dampers are added when vortex shedding is a concern.
Yes. We supply caged ladders, intermediate platforms, top platforms with handrails, mounting brackets for aviation obstruction lighting, and lightning protection per OSHA and FAA requirements.
Stacks are designed to ASME STS-1 (Steel Stacks), ASCE 7, AISC 360, or CICIND as required, with all welding to AWS D1.1 or ASME Section IX. Pressure-rated stacks (such as flare stacks) carry the ASME U-stamp where applicable.

Request a Quote on This Project

Contact Roben Mfg., Inc. to discuss your project specifications, timeline, and material requirements.

📞 (732) 364-6000 ✉ sales@robenmfg.com 📍 760 Vassar Ave, Lakewood, NJ 08701
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