MARINE METAL FABRICATION ON THE GULF COAST
Pascagoula, Mississippi is home to Ingalls Shipbuilding — one of the largest shipbuilders in the United States — and JMC Fabrication sits in the same industrial corridor. AWS and NAVSEA certified, operating a 50,000 sq ft shop within the Gulf Coast's most concentrated marine fabrication geography, JMC serves shipyard accounts, marine contractors, and offshore clients with pipe spools, structural work, and custom fabricated assemblies that meet the documentation and certification standards marine buyers require.
NAVSEA certification is a prerequisite for a large segment of marine and shipyard fabrication work — and JMC holds it. Our welders are qualified for Navy and marine specification applications. AWS certification covers the broader range of marine structural and piping work. Material traceability, weld log documentation, and project closeout packages are standard practice on marine projects.
JMC's marine capabilities cover the core fabrication scope for shipyard and offshore clients:
- Pipe spool fabrication — AWS and NAVSEA certified, carbon steel and stainless steel
- HVAC and ventilation duct for marine and shipyard applications
- Structural components and custom assemblies
- Penetrations, flanges, and fittings for marine systems
- Custom weldments and equipment packages
JMC is positioned in Pascagoula's marine fabrication corridor. Our in-house engineering team can review customer-supplied isometrics, flag fabricability issues, and go directly to production — reducing the coordination lag that adds time to complex marine packages. Documentation and traceability meet the requirements marine and defense buyers specify.
Pascagoula, MS is the Gulf Coast's primary marine and shipbuilding hub. JMC's 50,000 sq ft facility is positioned minutes from Ingalls Shipbuilding and the Port of Pascagoula — making turnaround times and delivery logistics practical for Gulf Coast shipyard supply.
- Stainless steel (304, 316): marine piping and corrosion-critical applications per NAVSEA specification
- Carbon steel: structural and piping in non-saltwater-exposed or coated applications
- Both materials available from a single shop with a single documentation trail
Every marine project at JMC includes the documentation trail the work requires:
- NAVSEA certified weld procedures
- AWS certified welders
- NDE documentation per project specification
- Material traceability: MTRs, heat certifications, weld logs
- Project closeout documentation packages
- May 13, 2026Carbon Steel vs. Stainless Steel Fabrication: Choosing the Right Material for Marine and Industrial ApplicationsHow carbon and stainless steel compare on corrosion, weldability, and cost, and how to choose between them for marine, oil and gas, and commercial HVAC fabrication.
- May 8, 2026Spooled Piping vs. Stick-Built Piping: When Each Makes Sense for Your ProjectA practical framework for when shop-fabricated pipe spools beat stick-built field piping, and the scenarios where field assembly is still the right call.
Services most often specified for marine projects:
- Pipe Spool FabricationShop-fabricated pipe spools for oil & gas, marine, and industrial applications. AWS and NAVSEA certified welding from Pascagoula, MS. Carbon and stainless steel.
- Stainless Steel FabricationNAVSEA and AWS certified stainless steel fabrication for marine, oil & gas, and specialty industrial applications. 304 and 316 stainless. Pascagoula, MS.
- Custom Metal FabricationCustom metalwork from concept through delivery — pump skids, penetrations, flanges, subbases, copper assemblies. AWS and NAVSEA certified. 50,000 sq ft shop in Pascagoula, MS.
Is JMC Fabrication NAVSEA certified for marine welding?
Yes. JMC holds NAVSEA welding certification, qualifying our welders for work on marine and Navy specification projects. NAVSEA certification is a prerequisite for many shipyard and defense marine contracts in the Gulf Coast.
What marine fabrication services does JMC offer?
JMC produces pipe spools, HVAC and ventilation duct, structural components, penetrations, and custom weldments for marine and shipyard applications. We fabricate in carbon steel and stainless steel with full documentation and NDE capabilities per project specification.
Where is JMC Fabrication located relative to Gulf Coast shipyards?
JMC Fabrication is located in Pascagoula, MS — within the same industrial corridor as Ingalls Shipbuilding, one of the largest shipbuilders in the United States. Our proximity to the Pascagoula shipyard and Port of Pascagoula makes us a practical Gulf Coast supply source.
What materials does JMC use for marine pipe and structural fabrication?
JMC fabricates in 304 and 316 stainless steel for corrosion-critical marine applications and carbon steel for structural and non-saltwater-exposed systems. Contact JMC to confirm additional grades for specific marine applications.
Can JMC handle marine project documentation and material traceability requirements?
Yes. JMC provides material test reports (MTRs), heat certifications, weld logs, NDE records, and project closeout documentation packages for marine projects with NAVSEA or spec-driven traceability requirements.