Your mid west source for high-quality mechanical tubing and steel supply
As the authorized mechanical tubing distributor for Allied Tube & Conduit across IN, IL, WI, MN, Western MI, and Western KY, Griffin Supply delivers dependable, premium-quality products to manufacturers across the Midwest.
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Who we are
Responsive Service. Competitive Pricing. Ready to Ship.
At Griffin Supply, your success drives everything we do. Backed by the resources and expertise of Ohio Galvanized Tube, we deliver high-quality steel tubing and supply solutions with the speed and personal service that only a regionally focused team can provide. Strategically positioned in Hammond, IN, we're at the crossroads of the Midwest — meaning faster delivery, lower freight costs, and a team that picks up the phone.
Ready to discuss your next project or request a quote? Reach out today — we'll respond fast.
Our Products
Products Built for Performance
Gatorshield®
Maximum corrosion protection for demanding environments. Higher zinc content delivers superior rust resistance for outdoor, agricultural, and wet or damp applications like greenhouses, and more.
Zinc Flo-Coat®
The original in-line galvanized tube. Allied's patented triple-coat process — pure zinc, conversion coating, and clear polymer top coat — provides reliable, long-lasting corrosion protection.
A513 Mechanical Tube
ERW mechanical tubing with precise tolerances and flash control. Available raw or pre-galvanized. Ideal for high-performance OEM applications like appliances, lawn equipment, and more.
Zinc Plated Round Bar
Electroplated steel rod available in 3/8", 1/2", and 5/8" diameters — commonly used in awning systems and other structural applications requiring corrosion resistance.
Square-Fit Tubing®
Our popular telescoping square tubing, available pre-galvanized or plain, in sizes from 1.50" to 2.50". A versatile solution for adjustable-length structural applications.
Galvanized Pipe
Galvanized pipe for corrosion-resistant applications in outdoor, industrial, and moisture-prone environments — including fencing, guardrails, structural framing, water lines, and agricultural or marine settings where rust resistance matters.
Why Choose Us
More Than a Supplier — A Committed Partner
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, MI, and KY
Territories
The Allied Tube & Conduit Distributor for the Midwest
Ready to get started?
The Griffin Supply team is here to help
Location
Head Office
5026 Columbia Ave, Hammond, IN 46327
Hammond, IN 46320
(219) 932-2122
info@griffinsupply.com