Ostro’s welded-frame red iron system — a tapered “welded three-plate” (fabricated I-beam) design — is built for the largest, most demanding jobs: warehouses and distribution centers, manufacturing and industrial plants, aircraft hangars, and data centers. For lighter, smaller-span buildings, we also offer a cold-formed steel system, and you can add a second level in the same footprint with an Ostro Mezzanine System. See our completed projects, or tell us what you’re building below to get your factory-direct estimate. Up to 90% of our welds are completed by robotic or machine-operated weld heads, resulting in extreme consistency and quality. While often called “red iron” buildings in conversation due to the red oxide shop coatings used in the industry, Ostro also offers a grey shop coat, which pairs incredibly well with hot-dipped galvanized framing to give your project a high-end, professional look. All our buildings come standard with 26ga exterior wall sheeting and trim, specially coated with a siliconized polyester baked-on finish to withstand years of heavy-duty use. Our standard “PBR” (purlin-bearing rib) profile features an elongated overlap from panel to panel and comes with extra-tacky butyl tape to create a tight seal. All our fasteners are stainless-steel capped and painted to match your wall and roof sheeting.
Ostro provides a full set of drawings with each building, stamped by a professional engineer licensed in your state. Pairing these drawings with our easy-to-read assembly instructions makes installation of your Ostro Steel Structures building a breeze.

