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Professional Service
Duct Fabrication & Systems
Precision Engineering for High-Performance Airflow
Diaz Sheet Metal is Maryland's premier destination for custom duct fabrication. Combining master-grade craftsmanship with advanced CNC technology, we produce SMACNA-compliant systems designed for maximum efficiency, structural integrity, and air-tight performance across commercial, industrial, and specialized mechanical projects.
Our Services
Advanced Production
High-volume automated coil lines and CNC-plasma cutting ensure surgical precision and rapid project turnaround.
SMACNA Certified
All components are fabricated strictly to SMACNA standards for gauge thickness, reinforcement, and pressure class.
BIM Coordination
Full 3D CAD modeling and shop drawing services to identify and resolve field conflicts before they reach the job site.
Specialized Alloys
Expert fabrication in Galvanized, Black Iron, 304/316 Stainless Steel, and Aluminum for any environment.
Why Choose Diaz Sheet Metal?
Precision-fit custom transitions, offsets, and plenums
Liquid-tight welded grease duct (NFPA 96 compliant)
High-performance spiral and flat oval aerodynamic systems
Acoustic and thermal internal lining (1/2" to 2")
Significant reduction in on-site installation labor and waste
Emergency fabrication support for critical field-fit adjustments
Our Process
1
Blueprint Review
Our engineering team analyzes your mechanical plans to identify optimal routing and sizing.
2
Drawing Approval
Detailed fabrication drawings are submitted for client approval to ensure 100% field-fit accuracy.
3
CNC Fabrication
Approved drawings are exported directly to our CNC-plasma systems for precision manufacturing.
4
Quality Logistics
Ductwork is cleaned, tagged by system, and delivered on-schedule for rapid staging.
Frequently Asked Questions
Which standards do you follow during fabrication?▼
Every piece of ductwork leaving our shop is fabricated in accordance with SMACNA (Sheet Metal and Air Conditioning Contractors' National Association) standards, ensuring the correct gauge, reinforcement, and sealing for the specified pressure class.
Do you offer shop drawings and coordination?▼
Yes. We specialize in design-assist services. By creating detailed 3D shop drawings, we help mechanical contractors avoid collisions with other trades, significantly reducing field rework and delays.
What is your typical turnaround time for custom orders?▼
While it varies by project scope, our automated facility allows for very rapid production. Standard commercial orders are typically completed in 1-2 weeks, with emergency field adjustments often handled in 24-48 hours.
Do you provide fire-rated duct solutions?▼
Yes. We fabricate heavy-gauge welded grease duct and supply 3M™ Fire Barrier Duct Wrap systems, providing a complete, code-compliant solution for kitchen exhaust and fire-rated air duct assemblies.
Ready to Get Started?
Contact us today for a free estimate on your duct fabrication & systems project.