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What we do


For the last 40 years, Alps Welding has been the pressure vessel manufacturer providing custom fabrication services to North America’s most demanding design engineers, equipment designers, and plant operators, for their most complex and time-sensitive projects.


The Equipment We Build

We fabricate a variety of equipment, including pressure vessels, piping systems, stacks, heat exchangers, blower fan wheels, modular plant and skid-mounted equipment, among others.  We have manufactured thousands of registered vessels in our history, and have built an enormous variety of vessels, from small pipe-bodied vessels only a few inches in diameter, up to large flare drums 15 feet in diameter.

As a vessel fabricator, we are accustomed to a high level of NDE and other inspection, as well as demanding customer specifications, which has forced us to develop an extensive QA program, audited and accredited as a ASME Section VIII, Div. 1 fabricator.  We apply this same quality program to all of our projects, and as a result, have developed a reputation for building highly engineered, high-specification, critical equipment that requires a lot of inspection and testing.
Over the years, the scope of our work has expanded, from fabricating vessels, to providing engineering design and detailing, piping fabrication and assembly, installation of electrical and instrumentation parts, structural supports for equipment, insulation, and shipping preparation.  We can integrate these activities to fabricate fully modularized or skid-mounted systems, ready to ship for installation at site.

The Materials We Work With

Whether your requirements include sour service, low temperature service, high-tensile or hardened applications, or highly corrosive environments, we can build your equipment.  We are capable of fabricating in many grades of carbon and stainless steel, including alloys such as Hastelloy, Monel, and Inconel, and we also have the capability of fabricating with titanium.  We currently have over 100 distinct welding procedures, and are adding capabilities every year.

The Industries We Serveasmelogo

We work in many different process industries, including oil & gas extraction and refining, petrochemicals and specialty chemicals, steelmaking, mining, food processing, pharmaceutical, power generation, and water treatment.  Within each industry, we understand and comply with industry and client specifications and quality requirements.  We are on the approved vendor list as a direct supplier or subcontractor for many major plant operators across North America, and we are frequently audited by existing customers and regulatory authorities to maintain our status as one of the highest quality fabricators in every industry we serve.  We invite you to review our organization and procedures and add us to your approved vendor list.

Alps Welding Accessibility (PDF)

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