Choosing the right DOM tubing is crucial for safe, reliable roll cage fabrication. This guide reviews five durable DOM steel options commonly used in motorsports, chassis fabrication, and related projects. Each product highlights specifications such as outside diameter, wall thickness, and typical applications to help you select the best fit for your build.
| Product | OD / Wall | Length | Ideal For |
|---|---|---|---|
| Speedway Motors Round 1020 DOM Tubing | 1.75″ x .095″ | Pre-Cut Lengths: 3, 7, 10 ft | Roll cages, chassis fabrication |
| Speedway Motors Round DOM Tubing 1-5/8″ x .120″ | 1.625″ x .120″ | 7 ft | Roll cages, roll bars, bumpers |
| Speedway Motors Round DOM Tubing 1-5/8″ x .120″ 3 ft | 1.625″ x .120″ | 3 ft | Roll cages, chassis fabrication |
| Allstar Round DOM Steel Tubing 1-5/8″ x .120″ x 7.5 ft | 1.625″ x .120″ | 7.5 ft | Roll cages, fabrication projects |
| 2″ OD x 1/4″ Wall DOM Steel Tubing | 2.0″ x .250″ | Not specified | Multipurpose structural tubing |
Note: All items are praised for DOM (Drawn Over Mandrel) construction, offering consistent wall thickness and reliable strength — essential characteristics for safety-critical roll cage components and fabrication projects.
Speedway Motors 1020 DOM Tubing For Roll Cages
Key features include a 1.75-inch outside diameter with a .095-inch wall thickness, offering solid rigidity for chassis components and roll cage elements. The material is 1020 DOM steel, known for dependable strength and even wall thickness. Pre-cut length options of 3, 7, or 10 feet support various build scopes from compact frames to extended roll cages. These attributes align well with standard motorsport fabrication practices, where predictable performance is critical for safety.
Speedway Motors 1-5/8″ DOM Tubing, 7 Foot
This DOM steel tube uses a Drawn Over Mandrel process to deliver consistent wall thickness, essential for predictable performance in safety-critical applications. The 1-5/8 inch outside diameter paired with a .120 inch wall thickness matches common race cage standards and chassis components. The 7-foot length facilitates mid-range builds and eliminates excessive waste. Suitable for roll cages, roll bars, bumpers, nerf bars, and related structural tubing needs.
Speedway Motors 1-5/8″ DOM Tubing, 3 Ft
This 1-5/8″ OD, .120″ wall DOM steel tube is sold in a compact 3-foot pre-cut length, reducing waste during fabrication. The shorter length is ideal for smaller cages or custom segments within a larger roll cage system. DOM construction ensures consistent interior diameters and wall thickness, supporting predictable fitment and weld quality in chassis projects.
Allstar Round DOM Steel Tubing 1-5/8″ x .120″ x 7.5 ft
The Allstar DOM tubing comes in a long 7.5-foot length, enabling large segments of roll cages or chassis components to be fabricated with minimal joints. Dimensions are 1-5/8″ OD and .120″ wall, consistent with common standards inperformance builds. The tubing’s uniform wall thickness contributes to structural reliability during safety-critical applications, while the extended length supports fewer splices on big builds.
2″ OD x 1/4″ Wall DOM Steel Tubing
With a larger 2-inch outside diameter and a 1/4-inch wall, this DOM tubing offers enhanced rigidity for high-load structural sections. While slightly heavier, it provides increased resistance to bending, making it suitable for heavier roll cage components or supports in more demanding setups. DOM steel ensures consistent material performance across sections and welds.
Buying Guide: Key Purchase Considerations
- Material and process: Look for DOM (Drawn Over Mandrel) tubing for consistent wall thickness and predictable strength compared to standard steel tubing.
- Outside diameter and wall thickness: Choose OD and wall size to match your design standards (e.g., 1-5/8″ x .120″ or 1.75″ x .095″). Larger diameters offer greater rigidity but weigh more.
- Length and fabrication needs: Pre-cut lengths reduce waste and simplify layout. Plan for potential splices and consider available stock lengths (3 ft, 7 ft, 10 ft, etc.).
- Compatibility with welding and fittings: Ensure the tubing type pairs well with your weld process and connector options (e.g., roll cage joints, gussets, and bracing).
- Project scope and safety: For roll cages, prioritize higher wall thickness and verified strength. For chassis fabrication, balance weight against rigidity to meet performance goals.
- Brand and consistency: Reputable suppliers (Speedway Motors, Allstar) typically offer reliable metallurgy and consistent tolerances, aiding install accuracy.
- Cost vs. value: While higher grade or longer lengths may cost more, the durability and safety benefits in critical structures often justify the investment.