One Partner. Every Phase.

IAC is a mid-market industrial EPC contractor delivering fully integrated project execution for industrial processing and air pollution control systems. As both an OEM manufacturer and EPC contractor, we oversee every phase of the lifecycle, including design and engineering, fabrication, construction, installation, and commissioning, within a single, unified organization. IAC supports projects from $500K to $200M+, serving mid-market industrial clients who need the capabilities of a major EPC firm without the overhead.

Our vertically integrated model eliminates handoffs and delays, reduces miscommunication, and strengthens accountability across all disciplines. With in-house engineering, a 500,000-sq-ft fabrication facility, disciplined project management, and self-performed construction, IAC brings the speed, quality, and cost control required in today’s industrial markets.

Through our proven fast-track EPC approach, we accelerate delivery while maintaining uncompromising safety, quality, and compliance standards. Clients gain a streamlined path to operational readiness, supported by clear communication, predictable execution, and a partner committed to meeting project goals on schedule.

Whether building a new greenfield facility or expanding existing operations, IAC provides single-source responsibility that minimizes risk and maximizes performance—turning complex industrial projects into reliable, production-ready assets.

Reverse air baghouse system engineered and installed at a steel mill by IAC as part of a turnkey EPC project.

What Sets IAC Apart as an Industrial EPC Contractor

IAC delivers true turnkey EPC performance through complete vertical integration. Every critical function, including engineering, OEM equipment design, fabrication, construction, and commissioning, is managed by IAC and our wholly owned subsidiary Adelphi Construction LC. This unified structure provides the control and accountability that drive successful fast-track project execution.

Unlike EPC contractors that subcontract field construction to third parties, IAC self-performs civil, structural, mechanical, and electrical construction through Adelphi Construction LC. One organization controls schedule, safety, and quality from the first engineering drawing through final commissioning. No subcontractor markups, no handoff gaps between the design team and the crew in the field, and full accountability across the entire project scope.

Our team of more than 250 employees, including 50+ engineers across structural, civil, mechanical, and electrical disciplines, ensures that each system is designed and built with precision. Projects are supported by a 500,000-square-foot fabrication facility, advanced 3D modeling tools, and a robust project management platform, and client-specific reporting systems.

Because all disciplines operate within one organization, decisions move quickly, and communication stays clear. IAC maintains full visibility from design through startup, allowing for early issue resolution, fewer change orders, and stronger cost and schedule control. The result is a dependable EPC process that reduces risk and helps clients achieve operational readiness on time and within budget.

Most EPC contractors procure equipment from third-party manufacturers, then coordinate delivery, installation, and performance guarantees across separate organizations. IAC designs and manufactures its own industrial equipment, including baghouses, thermal processing systems, and material handling systems, and builds that equipment into EPC project scope. The engineering team that designed the equipment is the same team overseeing installation. This eliminates spec translation errors, reduces procurement lead times, and means IAC can guarantee system performance as a single accountable party rather than pointing to a separate equipment manufacturer when problems arise.

Our EPC Process: Engineering Through Commissioning

IAC’s EPC process is built on precision planning and seamless execution. By integrating engineering, procurement, fabrication, construction, and commissioning under one organization, we deliver consistent quality, reduced downtime, and predictable outcomes for every project.

Engineering and Design

Our in-house engineers apply decades of multi-industry experience to develop efficient, compliant, and cost-effective solutions. Using advanced 3D modeling, CFD analysis, and laser scanning, we ensure every system is optimized before construction begins.

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OEM Manufacturing & Fabrication

Integrated original equipment manufacturing and metal fabrication for high-performance industrial systems. Explore how IAC designs, fabricates, and delivers engineered equipment with tighter quality control and faster project schedules.

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Equipment Procurement & Logistics

Ensure every component arrives on time, in spec, and ready for installation. IAC manages complete sourcing, vendor coordination, and delivery for all project equipment—OEM and third-party—supporting fast-track schedules and seamless EPC execution.  

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Construction & Installation

Through Adelphi Construction LC, IAC provides complete civil, structural, mechanical, and electrical construction services. Self-performing key scopes enables tighter schedule control, improved safety performance, and faster field execution.

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Commissioning and Optimization

Our field teams and commissioning specialists bring each project online efficiently and safely. IAC provides operator training, system optimization, and long-term support to ensure maximum performance from day one. 

Proven EPC Project Experience

IAC has successfully delivered complex industrial projects across North America and worldwide, earning a reputation for precision execution and reliable results. From greenfield plant builds to major system retrofits, our EPC teams combine engineering, fabrication, and construction expertise to complete projects safely, on time, and within budget.

Biocarbon Facility for Green Steel – Mississippi IAC is serving as the EPC partner for SDI BioCarbon Solutions, delivering a…
Read More about Biocarbon Facility for Green Steel – Mississippi
Greenfield Frac Sand Plant IAC served as the EPC contractor for High Roller Sand’s greenfield frac sand (dry) plant in…
Read More about Greenfield Frac Sand Plant – Texas
Greenfield Flat Roll Steel Plant IAC completed an EPC turnkey ventilation and dust control system for the melt shop at…
Read More about Steel Dynamics – Greenfield Flat Roll Steel Plant – Texas
Project Overview IAC executed a full EPC project to design and install lead oxide dust containment systems for a large…
Read More about EPC Lead Oxide Dust Containment Battery Manufacturer – Missouri

Results That Drive ROI

IAC’s EPC model is designed to deliver measurable results for industrial clients. By combining engineering, fabrication, construction, and commissioning expertise within one organization, we help customers achieve faster project delivery, lower total cost of ownership, and stronger long-term system performance.

Accelerated Schedules

IAC’s fast-track execution approach reduces overall project timelines without compromising safety or quality. Clients consistently see faster commissioning and earlier production starts, creating a direct path to revenue.

Optimized Operations

Integrated design and fabrication enable seamless equipment fit and performance. Our engineers work closely with plant teams to balance throughput, efficiency, and emissions control, ensuring every system operates at peak productivity.

Controlled Costs and Reduced Risk

Centralized management and in-house fabrication eliminate unnecessary markups, limit change orders, and improve budget predictability. The result is greater transparency and a lower total installed cost.

Lifecycle Support

IAC’s commitment extends beyond project completion. Our field service teams, inspection programs, and parts network help maintain uptime and protect your investment throughout the equipment lifecycle.

Partner with IAC

IAC stands apart in the EPC market through a combination of experience, integration, and commitment to customer success. We provide a single accountable source for every phase of an industrial project across steel and metals, ethanol and biofuels, power generation, cement and minerals, and frac sand and bulk materials processing. Our people, resources, and expertise deliver lasting value at every project stage.

Integrated Expertise

With engineering, fabrication, procurement, and construction all managed by our in-house team, IAC maintains complete project visibility from start to finish. This integration ensures consistency, communication, and quality across every scope of work.

Proven Performance

IAC has successfully executed hundreds of projects across industries including cement, steel, biomass, and energy. Our record of on-time delivery, repeat customers, and multi-million-cfm system installations demonstrates the reliability and scale of our EPC capabilities.

Commitment to Safety and Quality

Every project follows rigorous safety standards and documented QA/QC processes. IAC’s Experience Modification Rate (EMR) remains well below industry average, reflecting our focus on protecting both people and performance

Long-Term Partnership

Beyond project completion, IAC supports clients with inspections, maintenance, and performance optimization programs that extend equipment life and ensure continued efficiency. We view every project as the start of a partnership built on trust and results.

Start Your EPC Project with IAC

Partner with IAC to turn your industrial project vision into reality. Our fully integrated EPC teams bring together engineering, fabrication, construction, and commissioning expertise to deliver reliable performance and accelerated project timelines.

Whether you need a new greenfield facility or are expanding existing operations, IAC provides the technical depth, project control, and accountability required for lasting success. We work side by side with your team to ensure every system meets safety, compliance, and production goals.

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Frequently Asked Questions About IAC’s EPC Services

IAC delivers turnkey EPC solutions for:

  • Air Pollution Control Systems (baghouses, scrubbers, DSI)
  • Frac sand and bulk materials processing facilities
  • Biomass and biofuel plant infrastructure
  • Industrial dryers, storage silos, and loadout systems
  • Electrical systems, MCCs, and automation
    From greenfield builds to brownfield upgrades, IAC is equipped for projects of all sizes across industrial markets.

EPC stands for Engineering, Procurement, and Construction. IAC provides fully integrated EPC services through a vertically aligned model—managing design, equipment supply, fabrication, field construction, and commissioning in-house. This reduces risk, eliminates handoff gaps, accelerates delivery, and ensures single-point accountability

Yes. While we specialize in turnkey execution, IAC also works alongside your engineering firm or construction partner to deliver discrete scopes—such as OEM equipment packages, automation systems, or specialized installations

IAC’s Special OPS Commissioning Teams ensure seamless startup by handling:

  • I/O checkout and system verification
  • Operator training and safety compliance
  • Maintenance plan development
  • Optimization and performance auditing
    Our approach minimizes downtime and supports early ROI realization


IAC ECO Rapid Deployment Frac Sand Plant with views of Screeners and Thayer Feeders
Watch Video about IAC ECO Rapid Deployment Frac Sand Plant with Screeners and Feeders
IAC offers complete Frac Sand Dry Plant solutions. Our expert engineers and process equipment specialists are available for everything from…
Watch Video about IAC Complete Frac Sand Dry Plant Solutions
Innovative project management pays off! Utilizing the huge experience portfolio from past 10 years in Frac Sand projects, IAC leverages…
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IAC Makes Complex Projects Simple. Find out why IAC is the premier EPC - Engineer, Procure, Construct - Contractor for…
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IAC was awarded a $50 million EPC contract to supply a variety of systems at the Drake Cement, Greenfield, Arizona…
Watch Video about Single Pass Separator Project

Selecting the right project delivery method is one of the most important decisions industrial owners make. The structure you choose directly impacts cost certainty, execution risk, schedule performance, and long-term […]
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IAC awarded contract to build two biomass drying systems that will be used to supply renewable power to an electric-arc-furnace steel mill.
Read More about IAC Awarded Contract to Build Biomass Drying Systems for Renewable Energy
IAC introduces ProSIA 3D laser scanning to enhance industrial construction services, offering accurate measurements, time savings, improved safety, reduced costs, better quality control, and enhanced documentation for projects.
Read More about ProSia 3D Laser Scanning Services for Engineering and Construction
Steel Dynamics, Inc. awarded Industrial Accessories Company (IAC) a turnkey order for alloy additive systems at their new Sinton, Texas mini-steel plant, enhancing their production capacity significantly.
Read More about SDI Awards IAC Supply & Installation of Alloy Additives & HBI for EAF
Industrial Accessories Company (IAC), the premier New Plant EPC Contractor and innovative equipment and service supplier to the Frac Sand industry, has announced the next generation of frac sand plants […]
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IAC's VP of Engineering shares how to have the best dust collection for new greenfield applications, starting with engineering through construction.
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White Paper


While wind and solar dominate renewable energy headlines, an overlooked solution lies in plain sight: woody biomass. With more than 1 billion tons of sustainable wood-based feedstock available annually in […]
View White Paper about The Untapped Potential of Wood Biomass

Brochure


IAC is your single-source EPC contractor for complex industrial systems—from retrofitting dust collection systems to building out greenfield manufacturing lines. As an integrated engineering, procurement, and construction (EPC) provider, we […]
View Brochure about IAC Full EPC Brochure

Projects


Biocarbon Facility for Green Steel – Mississippi IAC is serving as the EPC partner for SDI BioCarbon Solutions, delivering a new biocarbon production facility that will supply renewable carbon for […]
Read More about Biocarbon Facility for Green Steel – Mississippi
Greenfield Frac Sand Plant IAC served as the EPC contractor for High Roller Sand’s greenfield frac sand (dry) plant in Kermit, Texas, delivering one of the most advanced frac sand […]
Read More about Greenfield Frac Sand Plant – Texas
Greenfield Flat Roll Steel Plant IAC completed an EPC turnkey ventilation and dust control system for the melt shop at Steel Dynamics’ new greenfield flat-roll steel mill in Sinton, Texas. […]
Read More about Steel Dynamics – Greenfield Flat Roll Steel Plant – Texas
Project Overview Since 2012, IAC has executed multiple EPC projects for Drake Cement’s production facility in Paulden, Arizona. These efforts have supported plant expansion, improved dust collection, and ensured compliance […]
Read More about Drake Cement Plant Expansion – Arizona
The Nucor Steel, South EAF turnkey project included an IAC M-Pulse Baghouse rated at 1,200,000 acfm at 250 degrees F, 150’ tall Outlet Stack, Load-out Silo with Receiver Filter, MCC […]
Read More about Nucor Steel
SOx-NOx Reduction Project – Carbon Black IAC served as the EPC contractor for Phase 2 of Tokai Carbon Black’s Sox-NOx Reduction Project in Addis, Louisiana, a key initiative to meet […]
Read More about SOx-NOx Reduction Project – Tokai Carbon Black, Louisiana

Industries


Lime Production & Processing Lime production is an essential component in steelmaking, construction, water treatment, and environmental control. With demanding operating conditions and tightening emissions regulations, lime producers require engineered […]
Read More about Lime Production & Processing
Engineering Performance for Modern Frac Sand Operations Frac sand plants operate under high pressure to deliver consistent throughput, reduce fuel cost per ton, and maintain strict silica dust compliance. IAC […]
Read More about Frac Sand & Proppants