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MARKS Design and Metalworks designs and manufactures custom industrial equipment solutions using American stainless steel from their facility in the Greater Portland Area. Fonded in 2012, the cmpany is a leading manufacturer of stainless steel tanks and piping for sanitary food and industrial usage.

ASME Logo/Icon

ASME certifications adhere to detailed engineering and manufacturing standards, ensuring consistent quality and safety in pressure vessels, including vacuum tanks.

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MARKS is proud to fabricate in accordance with Build American and Buy American standards.

UL508a Icon

UL 508A certification, provided by Underwriters Laboratories (UL), ensures industrial control panels meet stringent safety and performance standards.

UL 142 certification from Underwriters Laboratories (UL) garantees that aboveground fuel tanks adhere to rigorous safety and construction guidelines.

01 Food and Beverage

Sanitary stainless-steel piping, brewing equipment, blending systems, packaging machinery, fermentation tanks, storage tanks, mixing vessels, CIP (Clean-in-Place) systems, and more.

02 Renewable Natural Gas

Biogas upgrading systems, skid-based or container-based systems, methane processing units, gas treatment equipment, gas scrubbers, gas compressors, storage tanks, and more.

03 Pharmaceutical

Custom fermenters, storage tanks, mixing vessels, filtration systems, ASME-certified pressure vessels, bio-reactors, and more.

04 Chemical

Chemical reactors, mixing tanks, storage vessels, heat exchangers, process piping, and more.

05 Wastewater

Welded tanks, treatment systems, clarifiers, aeration systems, sludge handling equipment, and FOG (fat, oil, grease) interceptors.

06 Other

Specialized tanks for cannabis, cosmetic mixers, biotech fermenters, enzyme production equipment, algae cultivation systems, yeast propagation tanks, CBD extraction systems, CO2 capture equipment, and more.

Our vision is to create, fabricate, and provide American-made products that promote clean and renewable energy technologies. To be the leading manufacturer of stainless steel vessels, we work to develop and support the guiding principles of partnership with our customers and employees to enhance the experience of working with MARKS.

Whether it’s craft beer, food & beverage, renewable natural gas, potable water & wastewater, biotech, or general manufacturing industry, we help our partners realize their vision. MARKS fabricates simple to complex industrial skids, stainless steel vessels and equipment using our customers’ designs or creating custom designs with our highly skilled engineering team. Your Ideas – Our Expertise, Solutions for Every Industry.

  • Fabrication of stainless steel tanks with internal production capabilities of 42’ tall and up to 15 tons.
  • Industrial equipment made with American stainless steel.
  • Highly experienced ASME-certified fabricators and welders capable of turning the most complex design into fully functioning equipment.
  • Full engineering team specializing in turning complex projects into practical designs.
  • In-house controls team with a UL508A Panel Shop and automation programming specialists.
  • Full forming capabilities, including a Boldrini press for making dished and flanged heads.
  • On-site fabrication and installation for unique projects.
  • Fully stocked Parts Store for all our customers’ needs.
  • American-made in the Pacific Northwest.

MARKS has traditionally manufactured equipment under its own brand name. The large M on the face of every tank is an emblem representing all that MARKS stands for. After all, we have built equipment with the philosophy “MARKS means quality” since day one. With 145,000 square feet of production space, MARKS manufactures tanks up to a 48,000-gallon capacity. Industrial applications include municipal wastewater systems, large mixing tanks, media separation vessels, and more. Supply chains for these sectors are diverse and quite complex. An EPC Contract (Engineering, Procurement, and Construction) often uses one company’s engineering combined with another’s fabrication capabilities. MARKS has significantly increased its presence as a contract manufacturer. We manufacture each item with the utmost consideration and care with the product branded by the contracting group. MARKS can assist with your contract manufacturing needs, which include skid-based systems, sub-assemblies, extraction systems, mixing tanks, and UL-listed panels.

At MARKS Design and Metalworks, we manufacture custom stainless steel flanged and dished heads for industrial and commercial applications. Our Boldrini dishing press and flanging machine and our in-house engineering department ensure that we meet or beat industry standards and exceed customer expectations. We offer a variety of head types, including ASME Semi Elliptical Head (SE), 2:1 Semi-Elliptical, 1.9:1 Elliptical, ASME Torispherical Head (F&D), 80-10, 100%, and 90%, and finally MARKS Standard Head (F&D), non-ASME. Our commitment to quality is evident in everything we do, from the precision of our manufacturing process to the documentation we optionally provide. If manufacturing a pressure vessel, our customers can expect to receive material test reports and ASME certification on their tank heads, ensuring that our flanged and dished heads are an accepted component of an ASME-certified pressure vessel.

MARKS has its own internal controls department to serve its clients. If you need high-quality industrial control panels, look no further than MARKS. Our skilled technicians dedicate themselves to designing, building, and testing electrical panels and controls to fit your unique needs.

Don’t just take our word for it – we are certified as a UL 508a panel shop, which means that we have met the strict guidelines set by Underwriters Laboratories (UL), an independent company specializing in safety science. This certification is a testament to our commitment to producing safe and reliable panels that meet the highest standards of quality and craftsmanship.

Have a unique problem? At MARKS, we specialize in unique solutions. If you need something stored, piped, processed, or fermented, MARKS engineers can make it happen. Our experts solve the problems others can’t while providing you with exceptional value-added engineering.

Atmospheric, pressure, fermentation, storage, mixing, and filtration, we build it!

MARKS uses only the highest quality 304 and 316 stainless steel, which ensures long-term durability and corrosion resistance. Sanitary stainless is easy to clean and maintain, making it ideal for food processing, pharmaceutical, and other hygienically sensitive industries.

Skid based tank and piping system

MARKS specializes in creative solutions, which include designing and manufacturing skid and container-based systems. Great for brewing in tight spaces or biogas upgrading systems, whatever your needs may be!

Example UL508a control panel from MARKS Design and Metalworks

MARKS has its own internal controls department to serve its clients better. If you need high-quality industrial control panels, look no further than MARKS. Our skilled technicians dedicate themselves to designing, building, and testing electrical panels and controls to fit your unique needs.

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From craft beer and beverage production to industrial and renewable natural gas applications, MARKS is your one-stop shop for success.

From food and beverage production to bioscience applications, MARKS is your one stop shop for success.

Thinking about UL142 tanks for your ethanol storage and mixing needs?
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