Choosing the right 7/8 inch stainless steel tubing can boost durability and performance across DIY, automotive, and industrial projects. This guide highlights five reliable options, covering welded and seamless stainless steel, cold-rolled steel variants, and a larger exhaust-ready tube for specialized needs. Each listing provides key specs, uses, and what to consider when deciding between price, thickness, and tolerance. Compare features side by side to find the best fit for your application and environment.
| Product | Material | Outer Diameter | Wall Thickness | ||
|---|---|---|---|---|---|
| 7/8″ OD x 6 ft. Welded 304 Stainless Steel Tubing | 304 Stainless Steel | 7/8″ | 0.049″ | 6 ft | Meets ASTM 269, -423°F to 1500°F |
| Gisafai 2 Pcs 7/8″ OD Tube | Cold Rolled Steel | 7/8″ | 0.12″ | 36″ | Seamless, corrosion resistance |
| Vigorous 7/8″ OD x 1 Ft. 304 SS Tube | 304 Stainless Steel | 7/8″ | 2 mm (~0.08″) | 1 ft | Seamless, strong and bendable |
| 1 7/8 Inch Exhaust Pipe Stainless Steel Tube | Stainless Steel (T304) | 1.875″ | Not listed | 18″ | Exhaust/machined mandrel |
| A513 Cold Roll Carbon Steel Round Tubing | Carbon Steel | 7/8″ | 0.083″ | 12″ | Drawn Over Mandrel, uses in pins/shafts |
Best 7/8″ OD Welded 304 Stainless Tubing
7/8″ outer diameter welded stainless tubing in 304 stainless offers robust performance for high-temperature and corrosive environments. The tube length is 6 ft with a wall thickness of 0.049″, providing a balance between rigidity and weight. It tolerates wide temperature ranges and adheres to ASTM 269. Ideal for structural framing, plumbing, or fabrication where welded connections are required. Limited to standard welded construction, this option supports projects that need durable domestic-sourced stainless steel.
Gisafai 2 Pcs 7/8″ OD Cold Rolled Steel Tubing
This pair of 7/8″ OD cold rolled steel tubes provides versatility for indoor and outdoor DIY or professional tasks. With an outer diameter of about 7/8″, inner diameter approximately 0.64″, and a wall thickness around 0.12″, they offer solid strength and good sealing. The seamless construction enhances durability for long-term projects, while the cold-rolled process improves surface finish and dimensional accuracy. Suitable for frames, supports, automation hardware, and light structural applications where moderate corrosion resistance is acceptable.
Vigorous 7/8″ OD 304 Stainless Tube, 1 Ft
This set includes two 7/8″ OD seamless 304 stainless tubes, each 1 ft long with a 0.08″ (2 mm) wall. The seamless design offers high strength and corrosion resistance, making it suitable for crafts, furniture frames, and prototype builds. Its smooth bore reduces friction for sliding components and fluid transport. The 304 grade ensures good performance in typical workshop environments and with standard fabrication methods.
ZJXDZY 1.875″ Exhaust Pipe Stainless Steel
Designed for exhaust systems and related applications, this 1.875″ inner diameter stainless steel tubing supports mandrel-forming with expansion capabilities. Made from T304 stainless steel, it avoids corrosion in exhaust environments and offers strength for custom exhaust and industrial piping. This option is better suited for professional installations and aftermarket automotive builds where precise fitment and durability matter.
Online Metals A513 7/8″ Round Tubing
A513 cold roll carbon steel round tubing with 7/8″ outside diameter, about 0.083″ wall, and 12″ length. This drawn-over-mandrel (DOM) option emphasizes high rigidity and machinability for pins, shafts, and light structural members. It is not stainless but serves projects requiring high strength steel with tight tolerances. Consider corrosion exposure and welding compatibility when selecting this option.
Buying Guide: Key Considerations for 7/8″ Stainless Steel Tubing
Material type matters. Stainless options (304) resist corrosion and are suitable for humid environments, food-grade applications, and outdoor projects. Carbon steel options offer strong rigidity and lower cost but require protective coatings for corrosion-prone settings. Seamless tubes generally provide better strength and fewer joining issues than welded tubes, which can influence load-bearing designs and fluid dynamics.
Wall thickness and tolerances affect bending, forming, and strength. A thicker wall improves pressure resistance and stiffness but adds weight. Tighter tolerances ensure precise fits for assemblies, reducing play and misalignment. Temperature ratings indicate suitability for hot environments and potential thermal cycling.
Length and diameter compatibility determine how tubes integrate with fittings, connectors, and other components. Availability of 7/8″ OD with standard inner diameters (e.g., around 0.64″ to 0.71″) influences wall dimensions and internal flow characteristics for fluid or gas use.
Fabrication method matters. MIG/TIG welding compatibility, mandrel bending behavior, and ease of cutting or drilling affect project timelines and outcomes. For exhaust or automotive uses, look for tube mills and mandrel-forming processes that minimize deformation and ensure roundness.
Finish and corrosion resistance should align with the application. Stainless tubes excel in most environments, while carbon steel tubes require protective finishes or coatings in outdoor or moist settings. Surface finish also influences aesthetics in furniture and architectural projects.
Origin and standards can influence value and compliance. Domestic production and recognized standards (e.g., ASTM 269 for stainless tubing) can improve traceability and performance consistency, especially in professional installations.
When choosing, match the tube to your application’s mechanical needs, environmental exposure, and fabrication capabilities. The five options above cover welded and seamless stainless steel, a cold-rolled steel alternative, a larger exhaust-grade tube, and a DOM carbon steel tube—providing a spectrum of performance, durability, and price considerations for common 7/8″ tubing projects.
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