What Marks Brothers does

Marks Brothers, Inc. is a privately held, third-generation family-owned custom metal fabricator founded in 1946 by John and Anne Marks in Boring, Oregon. The company produces ASME Section VIII Division 1 pressure vessels, shell-and-tube heat exchangers per TEMA standards, pipe spools to ASME B31.1/B31.3, half-pipe coils, pipe coils, modular skid systems, and OEM components, with deep expertise in exotic alloys including Hastelloy (C-276, C-22, C-200), Inconel (600, 625, 800, 800H), Monel 400, titanium, zirconium, duplex (2205), super duplex (Zeron 100), and 6% moly steels (AL-6XN, 254 SMO, 904L). Its manufacturing technology stack includes multi-laser sheet/plate cutting up to 6,000W, a purpose-built tube-and-pipe laser system, CNC forming, CNC rolling, Mori Seiki precision turning and milling, automated orbital welding, and in-house engineering using Autodesk Inventor and SolidWorks with F.E.A. for seismic, mechanical, and thermal design — backed by P.E. stamping and full QA/inspection (radiography, ultrasonic, dye penetrant, magnetic particle, hydrostatic, leak testing).

Marks Brothers holds ASME U/S/H stamps, National Board R and NB stamps, ASME NQA-1 nuclear qualification (per 10 CFR Part 50 App. B), CE marking under the EU Pressure Equipment Directive, and CRN registration for Canada, with these certifications renewable through May 31, 2028. The company operates from a 55,000 sq ft facility on 5.5 acres of industrial land near three major West Coast ports and supplies customers across 17 verticals including oil & gas, petrochemical, nuclear, LNG, conventional and geothermal power, mining, pulp & paper, pharmaceutical, water treatment, desalination, solar thermal, biomass, hydro, air pollution control, construction, and equipment OEMs — both domestically (U.S.) and internationally (Mexico, Central/South America, South Pacific, Europe, Canada).

Revenue is generated through custom-quoted, project-based B2B contracts sold via enterprise field sales; the company maintains long-term customer relationships rather than transactional volume, and is positioned by management as "a partner more than a supplier." Pricing is not publicly disclosed and varies by material (often exotic alloys), complexity, certification requirements, and volume. No external funding, M&A, or public market participation has been disclosed; the business has grown organically under continuous family ownership.

Name

Marks Brothers

Legal name

Marks Brothers, Inc.

Website

https://marks-brothers.com

Company type

Private

Founded year

1946

Operating status

Operating

Headcount range

101–250 employees

Short description

Marks Brothers is a third-generation, family-owned custom metal fabricator in Boring, Oregon, producing ASME-coded pressure vessels, shell-and-tube heat exchangers, exotic alloy components, skid systems, and laser-cut/CNC parts for industrial customers in nuclear, oil & gas, petrochemical, power, mining, pharmaceutical, and water treatment sectors across the U.S. and international markets.

Ownership category

akta.pro rank

Product category

Industrial Metal Fabrication

NAICS

Forging and Stamping (33211), Forging and Stamping (3321)

SIC

Sheet Metal Work (3444), Metal Forgings & Stampings (3460)

akta.pro primary industry

Metal Forming & Fabrication Machines (Presses, Bending, Shearing, Stamping) (IMAHADAC)

Keywords

• Metal fabrication services
• ASME pressure vessels
• Alloy fabrication
• Shell tube heat exchangers
• Nuclear fabrication

Headquarters

HQ city

Boring

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Supply Chain, Infrastructure, Technology or R&D, Operations, Marketing or Sales

Revenue model

1. Custom Fabrication Services: Marks Brothers generates revenue through custom fabrication of metal components, pressure vessels, heat exchangers, and complex fabrications for industrial customers. Projects are typically custom-quoted based on specifications, materials (stainless steel, alloys, specialty metals), complexity, and volume. Revenue is project-based and one-time in nature, though the company maintains long-term relationships with customers for ongoing fabrication needs.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels1 record

Core offering

Marks Brothers is a precision metal fabrication manufacturer that designs, engineers, fabricates, and assembles custom industrial components and equipment. Core offerings include ASME-certified pressure vessels, shell and tube heat exchangers, alloy fabrication (Hastelloy, Inconel, titanium, zirconium, duplex stainless), nuclear-grade fabrication under NQA-1, laser cutting, CNC forming/rolling/machining, pipe spools, half-pipe coils, and complete skid systems for industrial customers across petro-chemical, oil & gas, power generation, nuclear, mining, and water treatment sectors.

Product overview

Marks Brothers is a metal fabrication company offering a comprehensive portfolio of fabrication products and services. The core offerings include ASME Pressure Vessels, Shell and Tube Heat Exchangers, and various CNC manufacturing services (forming, rolling, machining, laser cutting). The company specializes in Alloy Fabrication using exotic metals (Hastelloy, Inconel, Titanium, Zirconium, Duplex Stainless) and Nuclear Fabrication under NQA-1 quality programs. Supporting services include Pipe Spools/Piping Fabrication, Half-Pipe Coils, Pipe Coils, and complete Skid Systems. Engineering and Design Services provide mechanical/thermal design, F.E.A. analysis, and P.E. stamping. All capabilities are supported by in-house Quality/Inspection services including radiography, ultrasonic testing, liquid penetrant, magnetic particle, visual inspection, and leak testing. The company operates from a 55,000 square foot facility on 5.5 acres in Boring, Oregon.

Differentiator

Problem solved

Functional benefit

Products and services

• ASME Pressure Vessels

Quantifiable outcome

• Reduced material waste through continuous strip-shaping half-pipe coiling systems with multiple revolutions minimizing section welds
• +2 more outcomes

Segments18 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Scale indicators3 records

Recent moves6 records

Expansion highlights5 records

Broad incumbents

• Precision Castparts Corp: Berkshire Hathaway-owned manufacturer of complex metal components and products, including investment castings, forgings, and fabricated metal assemblies for aerospace, power, and industrial markets. Highly comparable on specialty alloy fabrication and pressure-containing components, though significantly larger and more diversified.
• Babcock & Wilcox: Long-established manufacturer of boilers, heat exchangers, and environmental/process equipment with significant nuclear and fossil-fuel power-generation fabrication. Comparable on ASME Section I/VIII work, heat-exchanger engineering, and nuclear component manufacturing.
• Mueller Industries: Public manufacturer of copper, brass, aluminum, and stainless steel products including industrial fabrication, plumbing, and HVAC components. Comparable on stainless and alloy metal fabrication for industrial customers, though broader and more commodity-oriented than Marks Brothers.
• Watts Water Technologies: Public manufacturer of water treatment, plumbing, and flow-control products including pressure vessels and stainless fabricated systems. Comparable to Marks Brothers in ASME pressure vessel work for water and process industries, though focused more on downstream water/building markets.

Direct peers

• Curtiss-Wright Corporation: Public manufacturer with a Nuclear/Process Technologies segment that fabricates nuclear-grade pressure vessels, reactor components, and heat exchangers under ASME NQA-1. Directly competes with Marks Brothers in nuclear and process-industry fabrication and shares similar regulatory certification requirements.
• Chart Industries: Manufacturer of cryogenic and process equipment including brazed aluminum and shell-and-tube heat exchangers, pressure vessels, and liquefaction process packages. Closely comparable to Marks Brothers in shell-and-tube heat exchangers and ASME-coded pressure vessel fabrication for energy and industrial gas customers.
• SPX Technologies (Heat Transfer): Through its Heat Transfer segment, SPX designs and manufactures shell-and-tube heat exchangers, plate heat exchangers, and process cooling equipment for HVAC, refrigeration, and industrial markets. Direct competitor to Marks Brothers in engineered heat-exchanger fabrication.
• Holtec International: Privately held supplier of nuclear fuel cycle equipment, casks, and heat exchangers with deep ASME NQA-1 fabrication capability. Closely comparable to Marks Brothers on nuclear-grade pressure vessel and heat exchanger work, particularly for spent-fuel and decommissioning projects.

Others

• Kennametal: Manufacturer of metalworking tools and wear-resistant solutions, including tooling used in the same CNC machining and cutting operations Marks Brothers performs. Adjacent enabler rather than direct competitor, but relevant to understand the metalworking technology ecosystem.

Regional players

• Hamon: Belgium-based global supplier of heat exchangers, air-cooled condensers, and cooling systems for power generation and process industries. Comparable to Marks Brothers in shell-and-tube heat exchanger design and fabrication, though primarily serving European and global power markets rather than U.S. industrial customers.

Market position

Strengths4 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

Compliance7 records

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Marks Brothers