Fabrication

Built to perform. delivered to schedule.

High-capacity structural steel an miscellaneous metals fabrication—powered by automation, driven by accountability.

Fabrication You Can Count On—From First Cut to Final Delivery.

When fabrication partners miss schedules or lack communication, projects stall and costs rise. MMI’s fabrication division is built to eliminate that uncertainty—combining advanced automation, embedded quality control, and a team that takes ownership from estimate to delivery. Whether supporting general contractors, industrial operators, or fellow fabricators, we deliver consistent quality, reliable timelines, and a partnership you can depend on.

SERVICES SPECIFICS

Reliable Output, Consistent Quality, Built Around Your Needs

Core Fabrication Capabilities

  • Structural steel and miscellaneous metals for commercial, industrial, infrastructure, and agricultural projects
  • Beams, columns, embeds, stairs, rails, and custom assemblie
  • Skids, hoppers, chutes, platforms, and catwalk systems
  • Beam, plate, and pipe processing with high levels of automation
  • Custom fabrication tailored to project-specific requirements

Production & Delivery Strengths

  • High-mix fabrication capability across multiple concurrent projects
  • Reliable overflow partner for fabricators needing additional capacity
  • Schedule-driven production with strong on-time delivery performance
  • Transparent communication and proactive updates throughout fabrication
  • Clear estimating-to-fabrication handoff for seamless execution

Quality & Process Ownership

  • Embedded, on-site QA/QC throughout fabrication—not inspection-only quality
  • Certified Welding Inspectors (CWIs) involved across production
  • Full documentation and traceability for materials and welds
  • Lean manufacturing mindset (2-second lean) driving efficiency and consistency
  • Accountability culture—issues are owned and resolved, not passed along

TECHNOLOGY & EQUIPMENT HIGHLIGHTS

Automation That Drives Throughput, Systems That Ensure Precision

Advanced Processing & Automation

  • Automated beam processing and high-definition plate processing system
  • Robotic welding systems for repeatable, high-quality output
  • Beam, plate, and pipe automation supporting speed and accuracy

Facilities & Capacity

  • Multiple fabrication facilities supporting simultaneous project execution
  • Long members up to 75 feet and heavy pieces handled with specialized planning
  • Significant yard capacity and material handling infrastructure
  • Dedicated storage and staging areas for efficient workflow

Engineering, QA & Compliance

  • In-house QA/QC systems with strong inspection performance
  • Digital tracking and documentation across fabrication processes
  • Air quality and environmental compliance (Mesa facility)
  • Proven ability to meet demanding specifications and project requirements

Certifications & Compliance

  • ISO 9001:2015 certified quality management systems
  • ASME U, S, and PP stamps
  • ASME NQA-1 compliance
  • National Board R Stamp

Structural & Fabrication Certifications

  • AISC Building Fabricator
  • AISC Bridge Fabricator (Basic, Intermediate, Advanced)
  • AISC Hydraulic Fabricator
  • AISC Fracture Critical Endorsement

MESA, ARIZONA FACILITY

High-Mix Production, Precision Execution

  • Design-assist and constructibility reviews
  • Balanced workload across structural steel and miscellaneous metals
  • 228,000+ total square feet with over 50,000 square feet under cover
  • V808 Voortman beam processor and advanced plate processing systems
  • AGT BeamMaster robotic welding systems
  • Eight bridge cranes supporting efficient material handling
  • Strong QA/QC performance with consistent inspection success

EL CENTRO, CALIFORNIA FACILITY

Heavy Infrastructure, Built for Scale

  • Specialization in heavy infrastructure and high-spec structural steel
  • 50,000+ tons fabricated over the past five years
  • Large-scale yard capacity with direct rail access for logistics efficiency
  • In-house cambering for wide-flange beams (up to W44 sections)
  • Semi-automated pipe processing up to 48” diameter
  • In-house blasting and painting, including multi-coat systems
  • Press brake forming for complex plate components
  • V807 Voortman beam processing system
  • Certifications including AISC (bridge, fracture critical, sophisticated paint)
  • Proven expertise in high-spec work including bridge steel and AESS

WHY YOU WIN WITH MMI

Reliability That Keeps Your Project Moving

Schedule certainty
backed by disciplined production and planning
Consistent quality
supported by embedded QA/QC systems
A true fabrication partner—not just a vendor
focused on long-term relationships
Automation-driven efficiency
without sacrificing craftsmanship
Clear, proactive communication
from start to finish
Accountability at every stage—
from estimating through delivery

Built on Experience.
Driven by Accountability.

For more than 50 years, MMI has built its reputation on doing the work the right way—showing up prepared, communicating clearly, and following through at every stage. Our team brings the experience, adaptability, and accountability needed to keep projects moving and outcomes on track. No matter the scope, we approach every job with the same commitment: do it right, stand behind it, and deliver results you can count on.

Our business is driven by our 4H values.

WHY YOU WIN WITH MMI

Choose to be happy and treat others with respect.

hardworking

Be ambitious and obsessed with quality.

hungry

Seek learning and create opportunities. Adapt to change.

Honorable

Demonstrate humility and integrity and put the team first.

Integrated Capabilities. One Trusted Partner.

Let’s Build It Right—
the First Time.

Whether you’re planning, bidding, or already in motion, MMI is ready to step in as your full-service steel partner. Let’s simplify your scope, strengthen your schedule, and deliver a better result—together.

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