When your project depends on structural steel with strength, durability, and long-term performance, choosing the right partner matters. At Mark Metals, we understand that material quality is the foundation of every successful build. That’s why we source and fabricate only certified, American-produced structural metals from trusted U.S. mills and suppliers. Our commitment to domestic sourcing ensures consistent quality, full traceability, and dependable lead times for even the most demanding structural applications.
Certified American Steel for Demanding Applications
In structural fabrication, there is no room for compromise. Inferior materials can lead to costly delays, performance issues, and safety risks. Mark Metals prioritizes premium structural metals that meet strict industry specifications, giving engineers, contractors, and project managers confidence in every component we produce.
We maintain rigorous quality control processes and documentation, ensuring that all structural metals used in our fabrication projects comply with or exceed standards established by AISC (American Institute of Steel Construction), ASTM (American Society for Testing and Materials), and AWS (American Welding Society). This disciplined approach supports superior weldability, load-bearing performance, and long-term structural integrity.
Comprehensive Structural Metals Options
To support a wide range of industries and project requirements, Mark Metals offers multiple grades and types of structural metals. Each material is selected for performance, availability, and compliance with demanding engineering specifications.

Carbon Structural Steel
Carbon structural steel remains one of the most widely used structural metals due to its excellent strength-to-cost ratio and versatility. It is ideal for commercial buildings, industrial facilities, equipment supports, and general structural frameworks. Our certified carbon steel products deliver consistent mechanical properties and reliable fabrication performance.

Stainless Steel
For projects requiring corrosion resistance and long service life, stainless structural metals provide exceptional durability. Stainless steel is commonly used in harsh environments such as food processing facilities, water treatment plants, chemical operations, and architectural applications where both strength and appearance matter. Mark Metals fabricates stainless components to precise tolerances while preserving material integrity.

Bridge-Specific Steel Grades
Infrastructure projects demand specialized structural metals engineered for heavy loads and environmental exposure. We supply bridge-grade steels that meet stringent transportation and DOT requirements. These materials are designed to perform under dynamic loading conditions while maintaining long-term structural reliability for public infrastructure.

Weathering Steel (COR-TEN®)
Weathering structural metals such as COR-TEN® are engineered to form a protective oxide layer that reduces the need for painting and ongoing maintenance. This makes them a popular choice for bridges, outdoor structures, architectural features, and exposed structural elements. Mark Metals ensures proper material handling and fabrication techniques to maximize the performance benefits of weathering steel.
Domestic Sourcing for Maximum Reliability
Our relationships with reputable U.S. suppliers enable us to deliver consistent quality across projects of all sizes. Whether supporting commercial construction, heavy industrial builds, or infrastructure work, our team is committed to providing structural metals that meet the highest expectations.