Our Capabilities
Full-service precision metal fabrication — from raw material to finished assembly.
One Fabrication Partner. Complete Capability.
Since 1976, Tri-Lett Industries has invested in the people, equipment, and processes to handle the most complex metal fabrication challenges across a broad spectrum of industries. From precision CNC machining to heavy structural steel, we provide a complete range of services under one roof in Portland, Oregon.
Our experienced team works directly with engineers, designers, and project managers to translate drawings into precision fabricated components — on time and on budget.
Certifications & Quality
- AISC Member — American Institute of Steel Construction
- AWS D1.1 Structural Steel Welding
- Certified Welding Inspectors (CWI) on staff
- WPS/PQR documentation maintained
- Material traceability and mill cert documentation
- In-process and final dimensional inspection
Services & Processes
Precision Cutting
- Plasma cutting — structural steel and plate up to 6" thick
- Laser cutting — thin gauge sheet metal to ±0.005" accuracy
- Waterjet cutting — complex shapes in any material, no heat-affected zone
- Oxy-fuel cutting — heavy plate and structural sections
- Saw cutting — bar stock, tube, and structural shapes
Structural & Precision Welding
- AWS D1.1 Structural Steel certified welders
- MIG (GMAW), TIG (GTAW), Stick (SMAW), and Sub-Arc (SAW) processes
- Carbon steel, stainless steel, aluminum, and specialty alloys
- Full-penetration and PJP welds per engineering drawings
- Weld procedure qualifications (WPS/PQR) available
- NDT-compatible procedures
CNC Machining
- 3-axis and 4-axis CNC milling
- CNC turning and lathe operations
- Tolerances to ±0.001" standard
- Large-format machining available
- Tight-tolerance hole drilling and boring
- Surface finishing and grinding
Plate & Sheet Forming
- Press brake bending — up to 1" thick plate
- Plate rolling — cylinders, cones, and custom profiles
- Angle and bar forming
- Complex multi-bend assemblies from single blanks
- Tight-radius forming for specialty applications
Custom Assemblies
- Structural sub-assemblies and weldments
- Complete mechanical assemblies with hardware installation
- Pipe and tube assemblies
- Frame and rack assemblies
- Enclosures, panels, and housings
- Final assembly and fit-up inspection
Layout & Fit-Up
- 3D layout from customer drawings
- Precision fit-up on complex assemblies
- Weld prep and edge preparation
- Jig and fixture fabrication for production runs
- In-process dimensional inspection
Finishing & Surface Treatment
- Grinding, wire-brushing, and blasting
- Weld spatter removal and cosmetic finishing
- Passivation for stainless steel
- Primer and topcoat painting coordination
- Hot-dip galvanizing coordination
- Electropolish and sanitary finishing for food-grade work
Engineering & DFM Support
- Design-for-manufacturing review
- Drawing interpretation and clarification
- Value engineering to reduce cost and schedule
- Material and process selection guidance
- Prototype and first-article development
Specialty Fabrication
- Stainless steel — 304, 316L, duplex alloys
- Aluminum alloys — 6061, 5052, 3003
- Heat-resistant alloys — 310SS, Inconel
- Specialty shapes and profiles
- Large-scale structural assemblies over 50,000 lbs
Materials We Work With
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