4+ Decades of Tank and Vessel Construction Expertise
Design, Construction, Repair and Maintenance of Welded Steel Tanks
Trusted by
Milco National Constructors brings 4+ decades of hands-on construction expertise to every build – from storage tanks & pressure vessels, to air-cooled condensers and stack erection. We’re backed by a highly skilled workforce and a weathered track record of delivering complex projects safely, on time and within budget. Our approach is grounded in precision, accountability, and a calibur of knowledge that has been cultivated from a leadership team with many years of tank and vessel experience.

Milco National Constructors is Purpose-Built for Tanks and Vessels.
At Milco National Constructors, tank and vessel construction is what we do.
We pride ourselves in our deep, working knowledge of the tank industry, utilizing scalable resources backed by a trusted network of proven partners. The support we offer to streamline and strengthen complex designs is second to none. We have access to top-tier skilled trades, capable of executing at any scale, powered by the integrated strength of the DBM Global family of companies
Our Services:
- Construction of storage tanks and pressure vessels
- Installation of air-cooled condensers
- Maintenance outages
- Stack erection
- Proficient with a variety of metals
- Heavy industrial services
OUR PORTFOLIO
We design and build high-quality field erected tanks and vessels for the power, chemical, pulp and paper, refining, water treatment, and green energy industries.
Testimonials
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Safety & Quality
At Milco National, we know there is no compromise between safety and quality. We pride ourselves on being able to deliver high-quality projects through the safest practices, while still meeting work deadlines. Milco National has an industry-leading OSHA safety record and a comprehensive training institution. We utilize a well-trained quality control department that employs extensive testing and inspection methods to ensure that each project is completed in accordance with all client, industry and code standards and requirements.
We maintain memberships and certifications with national associations and government agencies, including the following:
- The American Society of Mechanical Engineers (ASME)
- American Society of Safety Engineers (ASSE)
- Avetta (formerly PICS)
- BROWZ Contractor Management Services
- Coalition for Construction Safety Certification Program (CCS)
- ISNetworld (ISN)
- Mine Safety and Health Administration (MSHA)
- National Maintenance Agreements Policy Committee (NMAPC)
- National Board Inspection Code (NBIC)
- Occupational Safety & Health Administration (OSHA)
- Occupational Safety Councils of America (OSCA)
Milco National is committed to the continual improvement of craft employee’s knowledge and skill level through rigorous and regular training. Additionally, we offer apprenticeship programs to help future craft professionals hone their skills.
Stamps
We are certified by national associations to use the following stamps:
ASME
- S for manufacture and assembly of power boilers
- U for manufacture of pressure vessels – Division I
- U2 for manufacture of pressure vessels – Division II, Alternative Rules
- H for heating boilers
National Board of Boiler & Pressure Vessel Inspectors
- R for repairs and alterations
- NB to register boilers, pressure vessels and other pressure-retaining items with NBBI
Awards
A first-place winner of the Award of Excellence in the Associated Builders & Contractor’s national competition, Milco National is recognized by both customers and national associations for demonstrating leadership in safety, quality, outstanding customer service.
Contact Us
Western Operations
3930B Cherry Ave.
Long Beach, CA 90807
(562) 595 – 1977
Eastern Operations
1115 Industrial Dr.
Owensboro, KY 42301
(270) 926-2534
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