Segmented and radius duct elbows with airtight seam welds.
Custom HVAC duct fittings
Precision-manufactured fittings built to engineering drawings for commercial ventilation and heavy industrial exhaust systems.
- CNC laser cutting and precision forming to tight tolerances
- Galvanized, stainless steel (304/316), and aluminum alloys
- Custom elbows, tees, reducers, and flanged connections
Custom sheet metal duct fittings
We fabricate precision custom elbows, tees, branches, reducers, and offset transitions tailored to your exact duct geometry and project requirements.
Our facility manages full end-to-end OEM contract production, combining automated CNC laser cutting, roll forming, and robotic seam welding to meet tight commercial schedules.
Every fitting undergoes rigorous seam integrity and static pressure testing to eliminate airflow leakage and streamline jobsite installation.
Any angle and configuration
Custom radius elbows, offsets, multi-branch tees, and eccentric transitions.
Tight tolerances
Automated CNC cutting and precision seam forming for rapid on-site assembly.
Certified quality
Built to SMACNA pressure standards with 100% seam and weld verification.
Standard & Custom Alloys
Galvanized, 304/316 SS & Aluminum sheet gauges up to 10 GA.
Core fitting types & features
Engineered duct components fabricated from galvanized steel, stainless steel, and aluminum to meet strict static pressure limits and SMACNA leakage classes.
Elbows & bends
Precision-formed short and long-radius bends built with continuous welded seams or Pittsburgh locks for minimal static pressure drop.
Tees & branches
Full-flow branch takeoffs and dividing tees designed to balance velocity distribution across commercial duct runs.
Reducers & transitions
Smooth cross-section transitions between square, rectangular, and round profiles ensuring laminar airflow profiles.
Flanges & access doors
Rigid companion flanges, companion rings, and cam-lock inspection doors built for airtight maintenance access.
Standard production workflow
From initial CAD review to final quality release, every custom enclosure and sheet metal component follows a documented, repeatable manufacturing route.
Drawing Review
DFM analysis & CAD audit
Tolerance validation, material yield checks, and tooling feasibility before production starts.
Cutting
Fiber laser & punch press
High-speed CNC nesting with clean edge retention across steel, aluminum, and alloys.
Forming
Multi-axis CNC bending
Precision press brake setup with dynamic crowning to match tight angle tolerances.
Related reading: sheet metal bending process
Joining
TIG, MIG & spot weld
Certified welding procedures with clean seam grinding and hardware insertion.
Related reading: sheet metal welding processes
Sealing & Finish
Coating & gasket prep
Powder coat, anodize, zinc plating, or poured-in-place environmental gaskets.
QC Inspection
CMM & full dimensional check
First-article verification, coordinate measurement, and weld seam integrity reports.
Delivery
Custom packing & logistics
Export-grade crating, kitting, barcode labeling, and scheduled global freight routing.
Custom Inspection & Quality Plans
Need specialized hold points, FAI reports, helium leak testing, or salt-spray validation? We tailor control plans to your project drawing requirements.
Material and finishing options
Select the alloy, gauge, and protective treatment engineered for your operating airflow, static pressure, and environmental exposure requirements.
Related reading: galvanized vs galvannealed steel
Key performance
High rigidity with self-healing zinc sacrificial protection in standard HVAC environments.
Target applications
- Standard spiral and rectangular ductwork
- Volume control damper frames and blades
- Plenum boxes, transitions, and roof curbs
Key performance
Zero oxidation in caustic washdown, cleanroom, and corrosive fume exhaust conditions.
Target applications
- Chemical laboratory and cleanroom exhausts
- Commercial kitchen hoods and grease ducts
- Marine, coastal, and wastewater treatment systems
Key performance
Up to 60% weight reduction compared to steel, ensuring low structural load and zero ferric rust.
Target applications
- Natatoriums, pools, and high-humidity air systems
- Lightweight roof-mounted architectural louvers
- Specialized sound attenuator baffles and silencers
Key performance
UV-stable exterior finish resistant to chalking, chipping, and harsh outdoor weathering.
Target applications
- Exposed architectural open-ceiling duct runs
- Color-coded industrial airflow zoning systems
- Weatherproof exterior building discharge vents
We support sheet thicknesses from 26 gauge (0.5 mm) to 10 gauge (3.5 mm) with in-house powder coating, anodizing, passivation, and continuous seam welding to meet SMACNA and DW144 standards.
Related reading: sheet metal thickness and gauge
Product advantages
Built for reliability and repeatability. Our fabrication processes ensure every part meets structural tolerances, structural strength, and exact installation requirements.
Verify your tolerances and production specs
Send your DXF, STEP, or PDF drawing sets. Our engineering team reviews formability, joint designs, and material options within 24 hours.
Application scenarios
Custom-fabricated ductwork and ventilation modules engineered to exact specification across critical industrial, commercial, and cleanroom facilities.
Commercial HVAC
Precision-formed spiral and rectangular ducting for high-capacity office towers, retail complexes, and healthcare facilities.
Industrial Ventilation
Heavy-gauge welded ductwork built to handle high static pressure, abrasive particulate, and demanding factory airflow requirements.
Clean Rooms
Airtight, smooth-interior stainless steel ducts engineered for pharmaceutical labs, cleanrooms, and semiconductor production.
Kitchen Exhaust
Continuous-welded, liquid-tight grease ducts fabricated to strict fire codes for high-temperature commercial kitchens.
Fresh Air Systems
Intake and heat recovery ventilation duct modules with low leakage ratings for continuous fresh air exchange.
Environmental Exhaust
Specialty coated and alloy duct assemblies configured for chemical scrubbers, fume extraction, and emission control setups.
Frequently Asked Questions
Find straightforward answers about our sheet metal capabilities, technical tolerances, and manufacturing workflows.
Have a custom technical inquiry?
Speak directly with our fabrication engineers about tolerances, CAD files, and production timelines.
Related Services & Products
Expand your production line with integrated metal engineering, duct fabrication, and certified airflow controls manufactured to strict specifications.
Request a custom fabrication quote
Upload specifications or design parameters for high-precision sheet metal enclosures, duct fittings, and custom production runs.
24-hour turnaround
Rapid engineering review, manufacturability analysis, and itemized cost breakdown delivered within one business day.
Strict confidentiality
Your proprietary CAD models, tooling files, and IP are protected under bilateral NDA before any drawing review.
Any file format
Direct ingestion of STEP, STP, IGES, DXF, DWG, SLDPRT, and 2D engineering PDFs with geometric dimensioning.