Searching for the right 2 inch steel tube involves considering material type, wall thickness, and whether a round or square profile fits your project. The following selections cover common options including drawn-over-m mandrel (DOM) tubing, A513 alloy, and hot-rolled square and rectangular tubes. Each product listing includes its key dimensions and a link to a purchase page for quick comparison. Use this guide to compare rigidity, weldability, and durability when choosing the best 2 inch steel tube for your application.
| Product | |||
|---|---|---|---|
| A513 Cold Roll Carbon Steel Round Tubing | Round | 2″ OD, 0.12″ wall | High-carbon A513 with good strength and rigidity |
| 2″ OD x 1/8″ Wall DOM Steel Tube | Round DOM | 2.00″ OD, 1/8″ wall | Seamless DOM steel for uniform thickness |
| 2″ OD x 1/4″ Wall DOM Seamless | Round DOM | 2.00″ OD, 1/4″ wall | Higher strength with thicker wall |
| Zonon 2″ x 2″ Square Tube | Square | 2″ x 2″ x 1/4″ wall | Hot rolled A35 steel for versatility |
| Small Parts 2″ Square Tube | Square | 2″ square, 0.083″ wall | Unpolished mill finish for quick fabrication |
A513 Cold Roll Round Tubing — 2 Inch
A513 steel is a high-carbon alloy offering strong rigidity with slightly reduced machinability and weldability. The tube features a 2″ outside diameter with a 1.76″ inside diameter and a 0.12″ wall, sized at 12″ in length. This profile is commonly used for pins, shafts, and structural components where strength is critical. For fabrication, consider welding and heat-treatment needs given the alloy’s properties.
2″ OD x 1/8″ Wall DOM Steel Tube
This DOM (drawn-over mandrel) steel tube provides a consistent wall thickness and seamless construction, with a 2.00″ outside diameter and 1/8″ wall. DOM tubes are favored for precise bends, high-strength frames, and applications requiring tight tolerances. Use of DOM steel supports improved straightness and uniformity in longer assemblies.
2″ OD x 1/4″ Wall DOM Seamless Round Tube
This thicker-walled DOM tube offers higher stiffness and payload capacity, with a 2.00″ outside diameter and 1/4″ wall. Its seamless DOM construction supports enduring strength under bending or torsional loads. It’s suitable for structural frames, supports, and machinery housings where extra rigidity is beneficial.
2″ Square Tube — 0.083″ Wall
This 2″ square tube from Small Parts features a 0.083″ wall thickness and a 1.834″ inner diameter. The square profile provides flat surfaces for mounting and a predictable cross-section for bending calculations. The mill finish makes it suitable for quick fabrication, painting, or powder coating after cutting and deburring.
Zonon 2″ x 2″ Square Tube, 1/4″ Wall
The Zonon hot-rolled square tube measures 2″ by 2″ with a 1/4″ wall thickness. Made from A35 steel, it’s designed for durability and outdoor or industrial use. The hot rolled finish typically yields a textured surface with good welding compatibility and corrosion resistance when properly treated or coated.
Buying Guide
Key considerations when selecting a 2 inch steel tube include profile, wall thickness, and material type. Round tubes (DOM or A513) are often favored for mechanical shafts, frames, and load-bearing applications due to uniform thickness and bending performance. Thicker walls (1/4″) increase stiffness but add weight and cost, while thinner walls save material and weight but may require more careful handling under load.
Profile choice matters: round tubes are common in automotive and equipment frames, while square tubes provide flat mounting surfaces and straightforward assembly with brackets and fasteners. For fabrication, assess weldability, machinability, and post-cut treatment needs. DOM tubing offers consistent wall thickness and smoother finishes, which can simplify finishing and coatings compared to hot-rolled square profiles.
Durability and environmental exposure should guide selection. Hot-rolled tubes (like Zonon) are robust and versatile, but may require de-burring and coating for moisture-prone settings. For projects demanding precision and tighter tolerances, DOM tubes are typically preferred. Always verify exact dimensions, tolerances, and finish requirements with the supplier before purchasing.
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