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If you need metric size square tube, we provide world-class metric carbon steel square tubes, made of welded structural grade carbon that is perfect for structural and construction applications.

Our metric carbon steel square tube is ideal for:

  • Agricultural implements
  • Industrial applications
  • Cargo trailers
  • Truck beds
  • Bollard construction
  • Shipbuilding
  • Wastewater transportation
  • Distillers
  • Chemical equipment

Our carbon steel square tube is made of long-lasting material constructed of carbon steel. It provides improved uniform strength, recyclable properties, and torsional strength.

Our carbon steel square tube is available in two different grades:

  • 1005/1018: A non-alloyed low carbon steel designed for primary shaping into wrought items and are suitable for the cold-wrought, strain-hardened state. Among forged carbon or non-alloy steels, it has a relatively high heat conductivity. Furthermore, it has a limited electrical property and a low tensile strength.
  • S355: A high-strength, low-alloy carbon steel that is easy to weld and has excellent impact resistance, even at sub-zero temperatures. S355 grade is frequently supplied untreated or normalized, and it is offered in a range of varieties, designated by additional characters or numbers, that offer minor chemical and mechanical characteristics S355 material has machinability comparable to mild steel.

Benefits of Carbon Steel Square Tube


Our carbon steel square tubes have uniform size and shape, including wall thickness and concentricity. They are steel tubes with the same length on both sides made of rolled steel strips that have been processed and treated. Also know as ERW (Electric Resistant Weld) is produced by means of a strip of steel passing through the rollers to form a certain size. Seam is welded and the flashed removed from the OD of the tube.

Increased Yield and Tensile Strength

Cold formed carbon steel square tubing has a higher yield and tensile strength than the hot formed steel. As a result, the material can tolerate extremely high temperatures, high pressures, and other damaging elements.

Various Sizes Are Available

Each is available in a huge variety of OD and wall thickness parameters. It is ideal for a variety of uses and requirements, including specific, hard-to-find, and custom sizes.

Get Your Carbon Steel Square Tube

Parker Steel holds North America’s largest inventory of metric metals. We provide top-of-the-line carbon steel square tubes in a variety of sizes to meet all of your requirements.

Once you know what and how much you need, call us at 800-333-4140 or request a quote from us online so you can get moving on your next big project.

Items appearing on our website do not necessarily reflect current inventory. Please contact us for current stock.

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