At Zeman Manufacturing, carbon steel is a trusted material for strong, durable, and cost-effective tubing used across a wide range of industries—including agriculture, construction, heavy equipment, transportation, and industrial systems. Known for its strength and machinability, carbon steel tubing is ideal for structural applications, support frames, and components exposed to mechanical stress.

We work with round, square, rectangular, oval, and extruded carbon steel tube profiles. Our in-house processes support a variety of tubing forms and finishes to match both functional and performance requirements.

‍Manufacturing Processes

• As Welded 
• Welded and Drawn 
• Drawn Over Mandrel (DOM)
• Seamless
• Flash Controlled
• Annealed / Heat Treated
• Straightened 
• Extruded 

Alloys

• EMT
• Bundyweld

Shapes

• Round
• Square
• Rectangle 
• Oval
• Extrusion

Certifications

• ASTM A513 – Electric-resistance-welded (ERW) tubing for mechanical applications
• ASTM A500 – Cold-formed welded and seamless carbon steel tubing for structural use
• ASTM A179 / A192 – Seamless tubes for heat exchangers and boilers
• ASTM A513 Type 5 (DOM) – Drawn over mandrel tubing with uniform wall thickness and smooth interior
• SAE J524 / J525 – Seamless and welded low-carbon steel tubing for automotive and hydraulic applications
• ISO 9001 – Quality management systems for consistent production and process control‍
• ISO 13485 – Quality management systems for medical device manufacturing‍

Explore our quality process.

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Why Zeman?

Our experience with carbon steel tubing spans decades of manufacturing for structural and mechanical systems. We collaborate with customers to select the right steel grade, optimize part geometry, and ensure cost-effective, high-performance results. Whether you're designing robust support frames or fabricating hydraulic components, Zeman delivers carbon steel tubing solutions that meet strength, tolerance, and quality expectations—every time.