With exceptional talent at every stage of vertical integration – design, engineering, fabrication, testing and assembly – Marks Brothers is able to provide a wide range of fabrication, from laser cut components to modular structures complete with vessels, valves, and piping. The Marks Brothers team of designers, engineers and skilled craftsmen specializes in solving highly complex fabrication challenges for multiple industries in the U.S. and internationally. Marks Brothers is valued as a partner more than as a supplier, establishing long-term relationships with its customers based on problem solving and delivering on its promises. Marks Brothers actively serves the following industries:

  • Air Pollution Control
  • Biomass
  • Chemical
  • Construction
  • Equipment OEMs (Exercise, Food Processing, High Tech, Material Handling..)
  • Geothermal
  • Hydro
  • Liquefied Natural Gas
  • Mining
  • Nuclear Power
  • Oil & Gas
  • Petro Chemical
  • Pharmaceutical
  • Power Generation
  • Pulp & Paper
  • Solar Thermal
  • Wastewater Treatment
  • Water Desalination

Air Pollution Control

air pollution 1

Stainless and alloy fabrication of scrubbers, columns, evaporators, and ducting with top quality in-house laser cutting, CNC-Forming, digital welding and the ability to design and fabricate complex trays and internals.


Marks Brothers has extensive experience building equipment for biomass plants. From Hastelloy C-276 steam screw reactors, pressure vessels, heat exchangers, and skid systems, to full modular batch plants. Marks Brothers specializes in complex fabrications delivering the quality you need.


Whether it’s an absorber column that’s 12-feet in diameter x 150 feet long, an expander gas heater, half-pipe jacketed tank, Hastelloy vessel, small stainless process tank, or a series of shell and tube heat exchangers, Marks Brothers exceeds expectations for stainless, alloy, or reactive metal fabrication.


Rolled pipes, angles, tubes bars, laser cutting plates, laser-cut pipe, forming, welding, architectural stainless fabrication, or any custom fabrication needs for any project, Marks Brothers can make it.

Equipment OEMs (Exercise, Food Processing, High Tech, Material Handling..)

The latest in tube laser cutting, sheet and plate laser cutting, CNC-forming, CNC-rolling, hardware insertion, CNC-mills a CNC-lathe and welding, enable Marks Brothers to fabricate almost any component part needed for any type of equipment.


Heat exchangers, scrubbers, separator vessels, alloy pipe spools, kinpactor cyclonic separators, condensers, and pressure vessels are only a few of the items Marks Brothers, Inc. produces for geothermal plants.


Draft tube elbows, spiral cases, governor tanks, pressure vessels, pipe spools, and other fabrication requirements are right in Marks Brothers’ wheelhouse. Marks Brothers’ reputation for high quality, timeliness and managing costs makes it a key partner for every fabrication need.

Liquefied Natural Gas

Marks Brothers, Inc. is a top supplier for shell and tube heat exchangers, condensers, separators, pressure vessels, pressure piping to ASME B31.1, process piping to ASME B31.3, or whatever the fabrication requirements might be. The highest level of quality ensures Marks Brothers is the best source for the best equipment for any project.


Industries - Mining - 1

Pressure vessels, condensers, heat exchangers, mixers, separators, alloy-fabricated screens, pressure piping to ASME B31.1, process piping to ASME B31.3, skid process systems, stainless and high alloy fabrication are just a few of the areas Marks Brothers serves our customers’ equipment needs.

Nuclear Power

With a robust nuclear Quality Assurance program in accordance with ASME NQA-1 and 10 CFR Part 50 App. B, Marks Brothers has built an unparalleled reputation for high quality fabrication in the nuclear field. Skid assemblies, columns, stainless pots, tanks, ASME pressure vessels, shell & tube heat exchangers, impact limiters, gamma detection pots, glove boxes, pipe spools and various other fabricated components are all great fits for Marks Brothers’ capabilities. In addition to best-in-industry fabrication, the Marks Brothers engineering team supports clients with F.E.A. for seismic analysis, mechanical design of pressure vessels and shell and tube heat exchangers, and thermal design on shell and tube heat exchangers.

Oil & Gas

The Marks Brothers team of designers, engineers, and skilled craftsman specialize in solving highly complex fabrication challenges and excels at feed header vessels, shell & tube heat exchangers, condensers, separators, pressure vessels, pressure piping to ASME B31.1, process piping to ASME B31.3, or other fabrication requirements.

Petro Chemical

Shell & tube heat exchangers, condensers, pressure vessels, process tanks, half-pipe jacketed reactors, internal pipe coils, and vessels with internals are some items we provide. Stainless, duplex stainless, Hastelloys, Inconels, other alloys and reactive metals are where Marks Brothers exceeds expectations for service, quality and fabrication support.


Marks Brothers produces half-pipe coils and dimple jackets in-house for jacketed reactors and vessels. In addition, it has extensive stainless fabrication experience meeting the stringent polished requirements of pharmaceutical vessels. The company also invested in the latest orbital welding technology for providing pipe welding on spools and internal pipe coils.

Power Generation

Quality systems at Marks Brothers comply with ASME Section VIII Div. 1, ASME NQA-1, TEMA, and AWS D1.1, as well as client-specific and designed programs. It also offers a highly robust quality program for nuclear components and it has been considered a top supplier on each of its nuclear contracts.

Shell & tube heat exchangers, pressure vessels, kettle reboilers, power piping in accordance with ASME B31.1 and process piping to B31.3. are a few of the items Marks Brothers routinely fabricates for its customers. The Marks Brothers team works with multiple stainless series, duplexes, Hastelloys, Inconels, titanium, and zirconium.

Pulp & Paper

Shell & tube heat exchangers, de-superheaters, black liquor coolers, sweet water condensers, preheaters, pressure vessels, satellite coolers, dissolving tanks, tanks, mini hoods, liquor guns, black liquor nozzles, air registers, and ducting are some of the components provided by Marks Brothers. It has the experience and ability to fabricate the equipment customers need, from components to fully designed shell & tube heat exchangers.

Solar Thermal

High alloy fabrication of heat exchangers, pressure vessels, pipe spools, skid systems, as well as fabricated structural components and brackets are manufactured at Marks Brothers. With extensive experience in alloy fabrication, ASME quality programs, and deep experience in fabrication techniques, Marks Brothers can provide almost any component a customer needs.

Wastewater Treatment

Whether it’s crystalizers, stripper tanks, launders, vessels, separators, shell and tube heat exchangers, evaporators, condensers, fabricated pipe spools, or a custom fabricated component, Marks Brothers can manufacture it. The company has the depth of services to fabricate almost any stainless or alloy equipment required for wastewater treatment applications.

Water Desalination

Evaporators, pressure vessels, and piping are a few of the alloy fabricated components Marks Brothers provides for water desalination systems. With extensive experience fabricating alloys such as 2205 Duplex, 316L stainless, Hastelloy C-276, C2000, C22, Inconels and other specialty metals, Marks Brothers has the proven experience to fabricate alloy equipment or piping to the highest quality level available.