About Us
Griffin Supply is the authorized Allied Tube & Conduit mechanical tubing distributor for the Midwest — delivering dependable product, competitive pricing, and responsive service to manufacturers across Indiana, Illinois, Wisconsin, Minnesota, Western Michigan, and Western Kentucky.
Today, Griffin Supply is the exclusive Allied Tube & Conduit mechanical tubing distributor for the Midwest, offering direct access to Allied’s proprietary product lines including Gatorshield® and Zinc Flo-Coat®. Our customers benefit from consistent mill supply, reliable lead times, and a local team that knows the product and picks up the phone.
About Griffin Supply
Professional and Expert Galvanized Tubing
Griffin Supply is a steel tubing distributor headquartered in Hammond, Indiana — strategically positioned at the crossroads of the Midwest. We specialize in galvanized and mechanical steel tube products, serving a diverse base of industrial manufacturers and fabricators throughout our territory.
Need help? Contact us
+1 419 289 3183or info@griffinsupply.com
In February 2026, Griffin Supply was acquired by Ohio Galvanized Tube (OGT), a Midwest-based steel and tube distributor with deep roots in the industry. Backed by OGT, Griffin Supply gained the resources, purchasing power, and stability of an established organization — while preserving the responsive, relationship-driven service our customers have always counted on.
Today, Griffin Supply is the exclusive Allied Tube & Conduit mechanical tubing distributor for the Midwest, offering direct access to Allied’s proprietary product lines including Gatorshield® and Zinc Flo-Coat®. Our customers benefit from consistent mill supply, reliable lead times, and a local team that knows the product and picks up the phone.
Blake Corbin
President
Territories
The Allied Tube & Conduit Distributor for the Midwest
As the authorized Allied Tube & Conduit mechanical tubing distributor for our region, Griffin Supply serves customers across a six-state Midwest footprint:
• Indiana (full state)
• Illinois (Champaign and north)
• Wisconsin
• Minnesota
• Western Michigan
• Western Kentucky
Our Hammond, IN location puts us at the heart of this territory — enabling fast, cost-effective delivery to manufacturers throughout the region.
Our Services
What We Offer
Inline Galvanized Steel Tube (Gatorshield® and Zinc Flo-Coat®)
Allied’s premium zinc-coated tube for superior corrosion resistance
A513 Mechanical Tube
ERW and HREW mechanical tubing for structural and industrial applications
Square-Fit Tubing®
precision-formed square tube designed for tight-tolerance assemblies
Zinc Plated Round Bar
Schedule Pipe
Why Griffin Supply
Manufacturers choose Griffin Supply because we combine the advantages of a major authorized distributor with the service culture of a regional partner:
Exclusive Allied Mechanical Distributor:
We are the exclusive Allied Tube & Conduit mechanical tubing distributor for the Midwest — giving you direct access to Allied's full product line with consistent supply.
Backed by OGT:
As part of Ohio Galvanized Tube, we bring expanded purchasing power, operational depth, and financial stability to every order.
Midwest-First Positioning:
Headquartered in Hammond, IN, we are built for the Midwest market — shorter lead times, lower freight costs, and a team that understands your production environment.
Competitive Pricing:
Our Allied authorization and OGT resources allow us to offer competitive, reliable pricing on high-volume and project-based orders alike.
Why Choose Us
Why Griffin Supply
Fast Lead Times
Stocked, ready material means your production line keeps moving.
Custom Fabrication
Precise, custom-cut and formed steel solutions built to your specs.
On-Time Shipping
Hammond-based, Midwest-centered — reliable delivery.
Trusted Allied Distributor
Authorized Allied distributor for MN, WI, IL, IN, Western MI, and KY.