What Mason Manufacturing does

Mason Manufacturing is a privately held custom industrial fabricator headquartered in Decatur, Illinois, specializing in shell and tube heat exchangers, ASME pressure vessels, columns and towers, rotary dryers, and tanks and bins. The company fabricates to ASME Section VIII Division 1 (holding both U and R stamps), TEMA standards (all types, B/C/R classes), and API 650/620 standards, with capacity to produce units up to 15 feet in diameter and 320,000 pounds from a 50,000 sq. ft. facility equipped with a 105-ton bridge crane, CNC burn table, and 120-ton turning rolls. Its product portfolio is paired with in-house engineering (mechanical, structural, thermal analysis), materials sourcing across stainless, carbon, duplex, and nickel alloys, fabrication services, formal Quality Control, and logistics coordination for oversized shipments.

The company serves at least eleven processing-industry verticals including biofuels/bioenergy, petrochemical, chemical processing, grain and oil seed, agricultural chemicals, pulp and paper, power generation, water treatment, mining and minerals, rendering, and biotechnology. Notable penetration includes over 100 North American ethanol plants supplied since 2004 and vessels placed in two of the three large cellulosic ethanol plants launched in 2014. GTM is direct enterprise/inside sales with single-point customer contact from RFQ through delivery, supplemented by long-term relationships with engineering intermediaries who specify Mason in customer projects.

The business model is project-based custom fabrication with per-project quoting, typical lead times of 8-16 weeks after approved drawings, and revenue concentrated 67% in shell and tube heat exchangers with the balance in pressure vessels, columns, rotary dryers, and tanks. The company is recognized as a qualified bidder by major Ag Chem, Grain, Oil Seed, Petrochemical, and Chemical processing companies, and has completed over 7,000 vessels across 5,500+ unique jobs over its 60+ year operating history.

Name

Mason Manufacturing

Legal name

Mason Manufacturing, LLC

Website

https://masonmfg.com

Company type

Private

Founded year

1960

Operating status

Operating

Headcount range

11–50 employees

Short description

Mason Manufacturing is a privately held custom industrial fabricator in Decatur, Illinois, producing ASME-certified shell and tube heat exchangers, pressure vessels, columns, rotary dryers, and tanks for processing industries including biofuels, petrochemical, chemical, grain, and pulp and paper across North America.

Ownership category

akta.pro rank

Product category

Industrial Pressure Vessel Manufacturing

NAICS

Boiler, Tank, and Shipping Container Manufacturing (3324), Other Metal Valve and Pipe Fitting Manufacturing (332919)

SIC

Metalworkg Machinery & Equipment (3540), Special Industry Machinery, Nec (3559)

akta.pro primary industry

Pressure Vessels, Columns & Storage Tanks (ASME/Process Vessels) (IMAHAEAF)

Keywords

• Industrial pressure vessels
• Shell tube heat exchangers
• ASME pressure vessels
• Custom metal fabrication
• Industrial process equipment

Headquarters

HQ city

Decatur

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, Operations, Infrastructure, Technology or R&D, Marketing or Sales

Revenue model

1. Custom Vessel Fabrication: Mason Manufacturing generates revenue through custom fabrication of shell and tube heat exchangers, ASME pressure vessels, columns, towers, rotary dryers, and tanks. Each unit is fabricated to unique customer specifications with pricing quoted on a per-project basis. 67% of annual production is dedicated to shell and tube heat exchangers, with remaining capacity in ASME pressure vessels and tanks.

Pricing tiers

Go-to-market motion2 records

Distribution channels2 records

Marketing channels5 records

Core offering

Mason Manufacturing is a custom fabrication company that designs, engineers, and builds industrial pressure vessels including shell and tube heat exchangers, ASME pressure vessels, columns and towers, rotary dryers, and tanks. Products are custom-fabricated to customer specifications under ASME Section VIII Division 1, TEMA, and API 650/620 standards, with units ranging from 3 inches to 15 feet in diameter and up to 320,000 pounds. The integrated service offering includes front-end engineering, mechanical and thermal design, fabrication, materials sourcing, quality control, and oversized-load logistics coordination.

Product overview

Mason Manufacturing is a custom fabrication company offering a portfolio of industrial vessel products centered on shell and tube heat exchangers, ASME pressure vessels, columns and towers, rotary dryers, and tanks and bins. These products are complemented by integrated service offerings including engineering (mechanical, structural, thermal analysis), fabrication (welding, cutting, machining), materials sourcing, quality control and safety management, and logistics and shipping support. The company operates from a 50,000 sq. ft. Decatur, Illinois facility with extensive fabrication capabilities including plate rolls, CNC burn tables, multiple bridge cranes up to 105 tons, and tank turning rolls. Engineering services use industry-standard software including PV Elite, AMETank, Aspen Tech, and AutoCAD LT. The portfolio is tied together through a formal custom fabrication process that provides one-on-one customer communication from inquiry through delivery, with projects tracked from RFQ receipt through design, material ordering, fabrication, hydro-testing, inspection, and shipping.

Differentiator

Problem solved

Functional benefit

Products and services

• Shell & Tube Heat Exchangers Custom-fabricated shell and tube heat exchangers conforming to ASME and TEMA standards, ranging from 3 inches to 15 feet in diameter and up to 320,000 pounds. Includes condensers, vacuum condensers, evaporators, re-boilers, and heaters fabricated to B, C, and R TEMA classes for industrial processing applications.
• ASME Pressure Vessels Custom-fabricated ASME pressure vessels including reactors, extractors, oil seed processing vessels, separator columns, and jacketed vessels with half pipe coils, dimple jackets, conventional jackets, and internal coils. Held both U and R stamps for ASME Section VIII, Division 1 conformance.
• Columns & Towers Custom-fabricated trayed and packed columns and towers including rectifying, distillation, fractionation, stripping, absorbing, disc & stripper, high pressure contractor, and lethal service scrubber columns for industrial processing applications.
• Rotary Dryers Large custom-fabricated rotary dryers up to 14 feet in diameter, available with tires and gears installed or loose, including replacement and spare parts such as undercarriage, drive assemblies, and peripheral equipment.
• Tanks & Bins Custom-fabricated storage tanks and bins up to 15 feet in diameter conforming to API standards, customer specifications, and accepted industry standards, available in carbon and stainless steel with paint and liner options.
• Custom Fabrication Services End-to-end custom fabrication services for shell and tube heat exchangers, ASME pressure vessels, rotary dryers, and tanks including front-end engineering, mechanical and thermal design, CAD drafting, fabrication, quality control, and logistical support for industrial processing customers.

Quantifiable outcome

• Over 7,000 shell & tube heat exchangers, ASME pressure vessels, and tanks fabricated in over 5,500 unique jobs
• +4 more outcomes

Segments11 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Scale indicators12 records

Recent moves6 records

Expansion highlights5 records

Broad incumbents

• Chart Industries: Manufacturer of heat transfer and process equipment including brazed aluminum heat exchangers and cold boxes serving energy and industrial gas — overlapping on heat exchange equipment with Mason's biofuels/petrochemical customers.
• Alfa Laval: Global leader in heat transfer, separation, and fluid handling — competes with Mason in custom shell-and-tube heat exchangers for process industries, though at significantly larger scale and broader product line.
• API Heat Transfer (formerly APV): Manufacturer of shell and tube heat exchangers, plate heat exchangers, and air-cooled exchangers for industrial process markets — competing with Mason in custom heat exchanger fabrication at larger scale.
• Kelvion (formerly GEA Heat Exchangers / SPX): Global manufacturer of shell and tube heat exchangers, plate heat exchangers, and custom process equipment across chemical, energy, and biofuels — broader portfolio but directly overlapping in industrial shell-and-tube fabrication.
• Mersen: Global industrial group with a dedicated heat exchanger business (graphite, metallic, and composite) serving chemical, petrochemical, and energy markets — broader portfolio but overlapping in process heat transfer equipment.

Direct peers

• Wessels Company: Manufacturer of ASME pressure vessels, expansion tanks, and storage tanks for HVAC and industrial process applications — overlapping in custom ASME-coded fabrication though smaller in unit scale.
• Holtec International: Engineered heavy industrial equipment manufacturer producing ASME pressure vessels and heat exchangers for energy and process industries — comparable in custom fabrication capabilities and certification requirements.
• Joseph Oat & Sons: Custom metal fabricator of pressure vessels, reactors, columns, and tanks for chemical, petrochemical, and pharmaceutical processing — overlapping on ASME-coded equipment and custom-engineered process vessels.
• Ross Metal Fabricators: Custom metal fabrication shop producing pressure vessels, tanks, and process equipment — comparable regional custom fabricator serving overlapping process industries with similar ASME-coded product offerings.
• BE Peterson, Inc. Custom fabricator of ASME pressure vessels, shell and tube heat exchangers, and process columns serving chemical, petrochemical, and biofuel customers — directly comparable in product mix and customer verticals to Mason Manufacturing.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks5 records

Key highlights6 records

Customer concentration

• Xx.com/masonmanufactur
• LinkedInlinkedin.com/company/mason-manufacturing-llc.

Compliance4 records

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds5 records

Investors1 record

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 Mason Manufacturing