Best DOM Tubing for 1-3/4 or 1-3/4 in Tubing: Strength, Size and Fit
For auto fabrication, roll cages, chassis work, and custom frames, DOM steel tubing offers dependable strength with a clean finish. This guide focuses on common DOM tube sizes around 1-3/4 inches and nearby options, highlighting six practical products to help you compare dimensions, wall thickness, and lengths. Each listing includes key specs to assist in selecting the right tube for tubes, frames, or roll cages.
| Product | Size / Wall | Length | Brand |
|---|---|---|---|
| Allstar Round DOM Steel Tubing 1-3/4in x .120in x 4ft | 1-3/4″ x .120″ | 4 ft | Allstar Performance |
| Allstar Round DOM Steel Tubing 1in x .120in x 4ft | 1″ x .120″ | 4 ft | Allstar Performance |
| Allstar Performance Round DOM Steel Tubing 1-1/2in x .095in x 4ft | 1-1/2″ x .095″ | 4 ft | Allstar Performance |
| Allstar Round DOM Steel Tubing 1-3/4in x .095in x 4ft | 1-3/4″ x .095″ | 4 ft | Allstar Performance |
| Allstar Round DOM Steel Tubing 1-3/4in x .120in x 7.5ft | 1-3/4″ x .120″ | 7.5 ft | Allstar Performance |
Choosing the right DOM tubing depends on the intended load, geometry, and fabrication method. The following sections highlight five relevant products with measurable specs to help you compare options side by side.
Allstar Round DOM Steel Tubing 1-3/4in x .120in x 4ft
Product details indicate a 1-3/4″ outer diameter with a .120″ wall, supplied in a 4-foot length. The package dimensions and weight are documented to help with shipping and handling planning. This size is commonly used for stronger roll cages and front-end frames where larger openings are needed without a significant weight increase. DOM steel provides consistent wall thickness and straightness, useful for precise fabrication and welding.
Allstar Round DOM Steel Tubing 1in x .120in x 4ft
This option offers a more compact 1-inch outer diameter with a .120″ wall, 4-foot length, and a lighter footprint. It’s suitable for smaller frame sections, rear cross-members, or lighter-duty roll cages where flexibility and ease of bending are advantageous. The listed dimensions support straightforward cutting and welding, with a manageably lower weight compared with larger tubes.
Allstar Performance Round DOM Steel Tubing 1-1/2in x .095in x 4ft
This tube measures 1-1/2″ OD with a .095″ wall in a 4-foot length. The lighter wall thickness relative to the 1-3/4″ variants makes it appropriate for non-load-bearing sections or where weight reduction is critical, while still delivering adequate rigidity for many chassis components. The long, manageable length supports clean, straight cuts and reliable welding outcomes.
Allstar Round DOM Steel Tubing 1-3/4in x .095in x 4ft
This variant uses the same outer diameter as the 1-3/4″ option but with a thinner .095″ wall, reducing weight while offering decent rigidity for certain structures. The 4-foot length remains convenient for shop throughput, allowing multiple cut-and-weld cycles without frequent reordering. It’s a commonly used spec for mid-weight roll cages and chassis components that require a balance between strength and weight.
Allstar Round DOM Steel Tubing 1-3/4in x .120in x 7.5ft
This longer 7.5-foot variant maintains the same 1-3/4″ OD and .120″ wall, offering extended length for longer sections, rails, or fewer joints in a fabrication project. The extra length can reduce the number of splices and improve overall alignment when building large frames or cages. Weight is higher than the 4-foot options, so plan for handling and storage accordingly.
Speedway Motors Round DOM Roll Cage Tubing 1-5/8 Inch OD x .120 Wall
Speedway Motors provides a close alternative in size, offering 1-5/8″ OD with a .120″ wall. This size sits between the 1-1/2″ and 1-3/4″ options, making it a versatile choice for mid-sized roll cages or chassis components. The 3-foot pre-cut length is convenient for modular fabrication and reduces waste in project planning.
1.5″ OD x 1/4″ Wall x 48″ Long DOM Steel Tubing
This option provides DOM tubing with a 1.5″ outer diameter and a thick 1/4″ wall in a 48″ length. It’s suitable for heavy-duty sections where extra rigidity is required, such as supports or rails that must resist bending forces. The slightly different size can fill niche roles within a broader build plan and still align closely with projects using 1-1/2″ to 1-3/4″ components.
Buying Guide: Key Purchase Considerations
- Size and wall thickness: Larger OD and thicker walls provide more strength but add weight. Choose based on load expectations and weight targets for your project.
- Length and fit: Longer lengths reduce joints but require more storage and handling space. Shorter lengths offer more flexibility in cutting and fabrication.
- Material consistency: DOM tubing is drawn-over-mandrel steel, which provides smoother interior surfaces and tighter tolerances than regular seamless tubes. Verify straightness and tolerances when ordering.
- Weldability: Ensure compatible welding methods (MIG/TIG) with steel grade. Clean surfaces and proper fitment minimize warp and distortion during welding.
- Weight considerations: For performance builds, lighter walls and smaller ODs can improve power-to-weight ratios, though structural requirements must still be met.
- Length availability: Some vendors offer pre-cut lengths (e.g., 3 ft, 4 ft, 7.5 ft). Plan your fabrication sequence to minimize waste and rework.
- Application type: Roll cages, chassis rails, and cross-members have different stress profiles. Higher stiffness tubes are preferable for critical load paths, while lighter tubes can be used for secondary structures.
- Cost and availability: Compare multiple brands for a balance of price, lead time, and stock levels to avoid project delays.
Comparative Considerations
- 4 ft vs 7.5 ft lengths: Longer tubes reduce the number of joints but increase inventory handling. Shorter lengths are easier to manage for small shops.
- .120″ vs .095″ wall: Thicker walls yield more rigidity but heavier weight. For safety-critical sections, a thicker wall may be preferred; for non-structural braces, a thinner wall can suffice.
- Outer diameter variety: A 1-1/2″, 1-3/4″, and 1-5/8″ OD cover a broad range of chassis designs. Choose the OD that best matches the mounting points and available connectors or fittings.
All listed products provide DOM steel tubing options that are commonly compatible with standard fabrication practices in American shops. When selecting tubing, align your choice to the specific structural role, welding process, and manufacturing workflow of your project.