Choosing the right 2 inch square steel tubing involves considering wall thickness, length, and manufacturing standards. This guide highlights five strong options commonly used in framing, machine supports, and architectural frames. Each product is described with key specs to help you compare fit for your project, whether you’re building a small DIY frame or a larger industrial structure.
| Product | Brand | Length | Wall Thickness | Notes |
|---|---|---|---|---|
| 2″ x 2″ x 1/4″ | Online Metals | 36″ | 1/4″ | Carbon steel, ready for modification |
| 2″ x 2″ x 1/4″ | Zonon | 47.2″ | 1/4″ | Hot rolled, versatile for indoor/outdoor use |
| 2″ x 2″ x 1/4″ | Zonon | 6″ | 1/4″ | Compact length option for smaller builds |
| 2″ x 2″ x 3/16″ | Online Metals | 36″ | 3/16″ | Hot rolled carbon steel, easy to modify |
| 2″ x 2″ x 3/16″ | Online Metals | 24″ | 3/16″ | Shorter length, compact build option |
Hot Rolled Steel Square Tubing, 2″ x 2″
Brand: Online Metals. This carbon steel square tubing combines strength with modifiability, making it suitable for structural frames, machine supports, and architectural components. Dimensions: 2″ height, 1/4″ wall, 36″ length. The tubing is ready for cutting, welding, or drilling to fit specific designs. It’s a reliable option for engineers and hobbyists working on robust metal projects.
2″ x 2″ Steel Square Tube, 1/4″ Wall (6″)
Brand: Generic. This 2″ x 2″ square steel tube features a 1/4″ wall and offers cut length options with a tolerance of +/- 1/8″. It’s useful for quick-build frames, supports, and light-duty structural components where flexibility in length matters.
2″ x 2″ Square Tube, 1/4″ Wall, 4′ Length
Brand: Small Parts. Unpolished mill tubing 2″ square with 0.083″ wall thickness rated for general structural tasks. The four-foot length provides convenience for shop fabrication and custom assemblies, with typical compatibility for welding and joining processes common in metalworking projects.
2″ x 2″ Square Tube, 1/4″ Wall, 47.2″
Brand: Zonon. Hot rolled 2″ x 2″ steel tube with 1/4″ wall thickness, 47.2″ length. Suitable for industrial accessories and DIY projects, this tubing emphasizes durability and versatility for indoor and outdoor use, with strong corrosion resistance and structural strength typical of hot rolled profiles.
2″ x 2″ Square Tube, 1/4″ Wall, 6″ Length
Brand: Zonon. This 6″ length tube provides a compact option for small frames or bracketing tasks. With a 1/4″ wall thickness and hot rolled construction, it offers a balance between rigidity and ease of fabrication for targeted projects or prototypes.
OnlineMetals A500/A513 2″ Square Tubing, 3/16″ Wall, 36″
Brand: Online Metals. Carbon steel square tubing rated for A500/A513 standards with a 3/16″ wall and 36″ length. This option emphasizes structural integrity for frameworks, supports, and machine components, and is ready for modification with welding, drilling, or cutting.
OnlineMetals A500/A513 2″ Square Tubing, 3/16″ Wall, 24″
Brand: Online Metals. The 24″ version of the 3/16″ wall square tube provides a shorter option for compact assemblies, offering similar structural performance with easier handling and storage in smaller shops or projects that require shorter sections.
Buying Guide: Key Purchase Considerations
- Wall thickness and material grade: Thicker walls and higher-strength grades improve load-bearing capabilities but add weight and cost. For structural frames, 3/16″ to 1/4″ walls are common choices in 2″ x 2″ profiles.
- Length and cutting tolerance: Longer tubes may be cut to fit, while shorter pieces save on fabrication time. Consider +/- 1/8″ length tolerances when planning joints.
- Manufacturing process: Hot rolled tubing generally offers good strength and affordability, while cold-formed options provide tighter tolerances and smoother finishes for certain assemblies.
- Finish and coatings: Uncoated tubes are straightforward to weld or drill, but consider coatings for outdoor or corrosive environments to extend service life.
- Compatibility with hardware: Ensure the tubing’s inner diameter and corner geometry suit fasteners, brackets, or gussets planned for your project.
- Project scale: For large industrial frames, standard stock lengths help with quick fabrication, while custom lengths can reduce waste for smaller builds.
- Standards and certification: If your project requires compliance, verify that the tubing meets applicable ASTM/A500/A513 or A36 specifications for predictable performance.
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