Two inch square tubing is a versatile material that’s become indispensable for countless DIY enthusiasts and professionals alike. Its robust strength, clean lines, and adaptable design make it ideal for everything from furniture building to structural framing. In this shopping guide, discover how two inch square tubing can meet your project needs and learn what to look for when selecting the perfect option.
Two Inch Square Tubing: Types, Variations, and Key Comparisons
| Tubing Type | Wall Thickness | Material | Finish | Common Lengths (ft) | Weight (lbs/ft) | Applications |
|---|---|---|---|---|---|---|
| 14 Gauge | 0.083″ | A500/A513 | Black/Bare/Primed | 8, 12, 20, 24, 30 | ~1.91 | Frames, light structures |
| 11 Gauge | 0.120″ | A500/A513 | Black/Bare/Primed | 8, 12, 20, 24, 30 | ~2.97 | Fencing, supports, handrails |
| 3/16″ (0.188″) | 0.188″ | A500 | Black/Primed | 20, 24, 30 | ~4.32 | Heavy-duty, posts, columns |
| 1/4″ (0.250″) | 0.250″ | A500 | Black/Primed | 20, 24, 30 | ~5.41 | Structural, industrial |
| Custom Cut – 16, 18 Gauge | 0.065″, 0.049″ | A513 | Oiled/Bare | Cut to size | Varies | Lightweight, non-structural |
Everyday Uses of 2″ Square Tubing
Two inch square tubing is a versatile building block in structural, fabrication, and DIY projects. Its form—a hollow, square cross-section—delivers both strength and efficiency, making it a top choice for countless applications, such as:
- Metal frames for gates, doors, railings, trailers, workbenches, and display racks
- Structural supports in construction or carports
- Fencing, handrails, and security barriers
- Agricultural implements and livestock equipment
- Home furniture and shelving
Its square shape ensures consistent load distribution and easy alignment, enabling stable, long-lasting designs.
Benefits of Two Inch Square Tubing
When you choose 2″ square tubing, you gain several advantages:
1. Outstanding Strength-to-Weight Ratio
The hollow structure provides significant strength without unnecessary weight, enhancing support without adding bulk.
2. Ease of Fabrication
Most 2″ square tubing types accept welding, drilling, and cutting well, making them user-friendly for professional fabricators and DIYers.
3. Uniform Shape
The consistency of the square profile makes it easy to measure, cut, and assemble, allowing accurate layouts and repeatable production.
4. Versatile Applications
Suitable for light, medium, and heavy-duty projects, options in gauge or wall thickness let you tailor strength to your needs.
5. Availability in Multiple Finishes and Lengths
Find it in black (unfinished), primed, bare, or even oiled interiors and exteriors, as well as a wide range of commercial and custom-cut lengths.
How to Choose the Right Two Inch Square Tubing
Selecting the right tubing ensures safety, quality, and matching requirements. Consider the following factors for your project:
1. Wall Thickness (Gauge)
- 14 Gauge (0.083″) – Common for lighter frameworks; easy to cut and weld; suitable for furniture and light-duty supports.
- 11 Gauge (0.120″) – Stronger, ideal for heavy or load-bearing structures; used for fencing and handrails.
- 3/16″ (0.188″) and 1/4″ (0.250″) – Heavy-duty uses, such as main columns, industrial shelves, and high-stress structures.
2. Material Grade and Specification
- A513 – For general manufacturing; precise dimensions; easy to machine; often used for mechanical or non-structural applications.
- A500 (Grade B/Common) – Used in construction and structural designs for higher strength and resilience; meets governmental and engineering standards.
3. Finish Type
- Bare/Black – Unfinished surface; mild corrosion resistance; must be painted or coated for outdoor exposure.
- Primed – Painted with a corrosion-resistant base layer, ideal for outdoor or exposed conditions.
- Oiled/Dry – May have an oily coat (for rust resistance) or dry surface (ready for priming or painting).
4. Length and Custom Sizing
- Standard lengths are usually 8, 12, 20, and 24 feet, with some suppliers offering up to 30 feet.
- Most sellers provide custom cut-to-length options for tight-fit requirements and minimal waste.
5. Weight and Handling
- Know the per-foot weight to plan for transportation, installation, and meet load requirements in your structure.
6. Price and Availability
- Bulk discounts often apply for larger orders.
- Special handling or shipping for very long pieces (20 feet or more) may affect pricing.
User Tips and Best Practices for Two Inch Square Tubing
- Measuring: Always verify both metric and standard units. The 2″ measurement refers to the outside dimension.
- Cutting: Use a metal chop saw, band saw, or abrasive cutting wheel for clean, square cuts. Mark cut lines carefully and double-check before cutting.
- Welding: Clean the joining areas thoroughly. Use clamps and jigs for precise alignment, especially important in frames and critical structures.
- Coating: Apply primer or paint to bare tubing immediately after fabrication if used outdoors to prevent rust.
- Handling: Wear gloves; sharp edges are common after initial cuts or machining.
- Drilling/Fastening: Support the tubing on both sides to avoid deformation when drilling holes. Use proper bits for steel.
- Load Planning: Always confirm wall thickness will support the intended load or span to maintain structural safety.
- Purchasing: Order extra length to account for test cuts, mistakes, or project adjustments.
- Cutting Charges: Some suppliers charge for each additional cut; plan your ordered lengths strategically.
- Freight/Delivery: Long pieces (often over 8-10 feet) usually require truck freight, so arrange delivery and offloading appropriately.
Technical Features & Specifications Comparison Table
| Specification | 14 Gauge | 11 Gauge | 3/16″ | 1/4″ |
|---|---|---|---|---|
| Wall Thickness | 0.083″ | 0.120″ | 0.188″ | 0.250″ |
| Per Foot Weight (approx) | 1.91 lbs | 2.97 lbs | 4.32 lbs | 5.41 lbs |
| Typical Lengths | 8-24 ft | 8-24 ft | 20-30 ft | 20-30 ft |
| Material Standards | A513/A500 | A513/A500 | A500 | A500 |
| Yield Strength | 46-62 ksi | 46-62 ksi | 46 ksi | 46 ksi |
| Tensile Strength | 58-72 ksi | 58-72 ksi | 58 ksi | 58 ksi |
| Elongation (2″) | 10-23% | 10-23% | ~23% | ~23% |
| Corner Radius | 0.180″-0.375″ | 0.180″-0.375″ | 0.180″-0.375″ | 0.180″-0.375″ |
*Values may vary by supplier or batch; verify with your supplier if precise data is critical for engineering purposes.
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Conclusion
Two inch square tubing is a time-tested, adaptable choice for professionals, builders, and DIY enthusiasts alike. Its range of strengths, finishes, and lengths make it suitable for nearly any project, from lightweight furniture to load-bearing structures. By understanding the options—wall thickness, material, finish, and length—you ensure the best performance and longevity for your application. Careful planning, proper selection, and following fabrication best practices guarantee success in your next build.
FAQ
-
What is two inch square tubing typically used for?
Two inch square tubing is commonly used for frames, structural supports, gates, handrails, trailers, furniture, and light to heavy fabrications in construction, automotive, agricultural, and general manufacturing. -
What does “2 inch” refer to in square tubing?
The “2 inch” measurement refers to the outside dimensions of each side of the tubing’s square cross-section. It is measured from outside edge to outside edge. -
What are the most common wall thicknesses available?
Popular wall thicknesses for 2″ square tubing include 14 gauge (0.083″), 11 gauge (0.120″), 3/16″ (0.188″), and 1/4″ (0.250″). Each thickness suits different loads and applications. -
How do I choose the right wall thickness?
Select wall thickness based on the load, span, and intended use. 14 gauge is light and ideal for non-load-bearing projects; 11 gauge and above are more suitable for heavy or structural work. -
What materials and grades are standard?
Most two inch square tubing is made from carbon steel, especially grades like ASTM A500 and A513. These standards assure certain strength and weldability characteristics. -
Can 2″ square tubing be used outside?
Yes, but bare (unfinished) steel will rust unless painted or coated. Opt for primed, galvanized, or painted finishes for outdoor or exposed settings. -
How heavy is 2″ square tubing?
Weight varies by gauge. For example, 14 gauge is about 1.91 lbs per foot, 11 gauge is about 2.97 lbs per foot, and heavier grades can reach over 5 lbs per foot. -
Is it easy to weld and machine?
Yes. Common grades like A500 and A513 are designed for excellent weldability and fair to good machinability, making them easy to work with using standard tools. -
What lengths are available, and can I order custom cuts?
Standard lengths include 8, 12, 20, 24, and 30 feet. Most suppliers offer custom cuts, often for a small additional fee per cut. -
What safety considerations should I keep in mind?
Wear gloves and eye protection when handling and cutting tubing. Support the piece securely during fabrication, and coat or paint any cut or welded surfaces to prevent corrosion.