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Stainless Steel Round Tube 304 Seamless

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Stainless Steel Round Tube 304 Seamless

The 304 seamless stainless steel round tube is engineered for high-pressure applications where the absence of a weld seam is critical for safety. These tubes are primarily used in high-purity fluid transport, hydraulic systems, and chemical processing lines. The 304 alloy provides excellent corrosion resistance and is suitable for both high and low-temperature service. Because there is no longitudinal weld, this tube offers superior structural integrity and pressure ratings compared to welded alternatives. Onlinemetals.com carries 304 seamless tubing in various sizes to support your most demanding engineering projects.

Material Properties

Link Icon Stainless Steel 304 Product Guide | Link Icon Stainless Steel 304 Round Tube Tolerances

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2 1/2" OD x 0.12" Wall x 2.26" ID Stainless Round Tube 304 Seamless Part # 26298

2 1/2" OD x 0.12" Wall x 2.26" ID Stainless Round Tube 304 Seamless -
Part #: 26298
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

Update
$60.74 for 1
$60.74 ea.

Dimensions

  • Outer Diameter: 2.5"
  • Wall: 0.12"
  • Inner Diameter: 2.26"
Click for more details
stainless-round-tube-304-seamless-1superZoom-mob{product.code}

Key Features

MTR FREE MTR Available
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stainless-round-tube-304-seamless-1superZoom-desk26298

2 3/4" OD x 0.25" Wall x 2.25" ID Stainless Round Tube 304 Seamless Part # 23343

2 3/4" OD x 0.25" Wall x 2.25" ID Stainless Round Tube 304 Seamless -
Part #: 23343
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

Update
$158.88 for 1
$158.88 ea.

Dimensions

  • Outer Diameter: 2.75"
  • Wall: 0.25"
  • Inner Diameter: 2.25"
Click for more details
stainless-round-tube-304-seamless-1superZoom-mob{product.code}

Key Features

CUSTOM CUT MTR FREE MTR Available
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stainless-round-tube-304-seamless-1superZoom-desk23343

3" OD x 0.375" Wall x 2.25" ID Stainless Round Tube 304 Seamless Part # 23028

3" OD x 0.375" Wall x 2.25" ID Stainless Round Tube 304 Seamless -
Part #: 23028
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

Update
$168.93 for 1
$168.93 ea.

Dimensions

  • Outer Diameter: 3"
  • Wall: 0.375"
  • Inner Diameter: 2.25"
Click for more details
stainless-round-tube-304-seamless-1superZoom-mob{product.code}

Key Features

CUSTOM CUT MTR FREE MTR Available
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stainless-round-tube-304-seamless-1superZoom-desk23028

3" OD x 0.12" Wall x 2.76" ID Stainless Round Tube 304 Seamless -  Part # 23857

3" OD x 0.12" Wall x 2.76" ID Stainless Round Tube 304 Seamless-
Part #: 23857
Pricing and availability for this item changes frequently. Contact us now for a fast quote.

3" OD x 0.188" Wall x 2.624" ID Stainless Round Tube 304 Seamless Part # 14808

3" OD x 0.188" Wall x 2.624" ID Stainless Round Tube 304 Seamless -
Part #: 14808
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

Update
$130.55 for 1
$130.55 ea.

Dimensions

  • Outer Diameter: 3"
  • Wall: 0.188"
  • Inner Diameter: 2.624"
Click for more details
stainless-round-tube-304-seamless-1superZoom-mob{product.code}
Material Meets These Standard(s): ASTM-A213 , ASTM-A269

Key Features

CUSTOM CUT MTR FREE MTR Available
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stainless-round-tube-304-seamless-1superZoom-desk14808

3" OD x 0.25" Wall x 2.5" ID Stainless Round Tube 304 Seamless Part # 14809

3" OD x 0.25" Wall x 2.5" ID Stainless Round Tube 304 Seamless -
Part #: 14809
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

Update
$162.26 for 1
$162.26 ea.

Dimensions

  • Outer Diameter: 3"
  • Wall: 0.25"
  • Inner Diameter: 2.5"
Click for more details
stainless-round-tube-304-seamless-1superZoom-mob{product.code}
Material Meets These Standard(s): ASTM-A213 , ASTM-A269

Key Features

CUSTOM CUT MTR FREE MTR Available
View more product details View more product details
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stainless-round-tube-304-seamless-1superZoom-desk14809

3" OD x 0.065" Wall x 2.87" ID Stainless Round Tube 304 Seamless Part # 14806

3" OD x 0.065" Wall x 2.87" ID Stainless Round Tube 304 Seamless -
Part #: 14806
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

Update
$73.18 for 1
$73.18 ea.

Dimensions

  • Outer Diameter: 3"
  • Wall: 0.065"
  • Inner Diameter: 2.87"
Click for more details
stainless-round-tube-304-seamless-1superZoom-mob{product.code}
Material Meets These Standard(s): ASTM-A213 , ASTM-A269

Key Features

CUSTOM CUT MTR FREE MTR Available
View more product details View more product details
View more product details Click for more details
stainless-round-tube-304-seamless-1superZoom-desk14806

3 1/4" OD x 0.25" Wall x 2.75" ID Stainless Round Tube 304 Seamless Part # 21450

3 1/4" OD x 0.25" Wall x 2.75" ID Stainless Round Tube 304 Seamless -
Part #: 21450
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

Update
$173.08 for 1
$173.08 ea.

Dimensions

  • Outer Diameter: 3.25"
  • Wall: 0.25"
  • Inner Diameter: 2.75"
Click for more details
stainless-round-tube-304-seamless-1superZoom-mob{product.code}
Material Meets These Standard(s): ASTM-A213 , ASTM-A269

Key Features

CUSTOM CUT MTR FREE MTR Available
View more product details View more product details
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stainless-round-tube-304-seamless-1superZoom-desk21450

3 1/4" OD x 0.12" Wall x 3.01" ID Stainless Round Tube 304 Seamless Part # 21952

3 1/4" OD x 0.12" Wall x 3.01" ID Stainless Round Tube 304 Seamless -
Part #: 21952
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

Update
$324.11 for 1
$324.11 ea.

Dimensions

  • Outer Diameter: 3.25"
  • Wall: 0.12"
  • Inner Diameter: 3.01"
Click for more details
stainless-round-tube-304-seamless-1superZoom-mob{product.code}

Key Features

CUSTOM CUT MTR FREE MTR Available
View more product details View more product details
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stainless-round-tube-304-seamless-1superZoom-desk21952

3 1/2" OD x 0.083" Wall x 3.33" ID Stainless Round Tube 304 Seamless Part # 27151

3 1/2" OD x 0.083" Wall x 3.33" ID Stainless Round Tube 304 Seamless -
Part #: 27151
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

Update
$117.97 for 1
$117.97 ea.

Dimensions

  • Outer Diameter: 3.5"
  • Wall: 0.083"
  • Inner Diameter: 3.33"
Click for more details
stainless-round-tube-304-seamless-1superZoom-mob{product.code}

Key Features

CUSTOM CUT MTR FREE MTR Available
View more product details View more product details
View more product details Click for more details
stainless-round-tube-304-seamless-1superZoom-desk27151

3 1/2" OD x 3/4" Wall x 2" ID Stainless Round Tube 304 Seamless -  Part # 29358

3 1/2" OD x 3/4" Wall x 2" ID Stainless Round Tube 304 Seamless-
Part #: 29358
Pricing and availability for this item changes frequently. Contact us now for a fast quote.

4" OD x 0.25" Wall x 3.5" ID Stainless Round Tube 304 Seamless Part # 23131

4" OD x 0.25" Wall x 3.5" ID Stainless Round Tube 304 Seamless -
Part #: 23131
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

Update
$166.69 for 1
$166.69 ea.

Dimensions

  • Outer Diameter: 4"
  • Wall: 0.25"
  • Inner Diameter: 3.5"
Click for more details
stainless-round-tube-304-seamless-1superZoom-mob{product.code}
Material Meets These Standard(s): ASTM-A213 , ASTM-A269

Key Features

CUSTOM CUT MTR FREE MTR Available
View more product details View more product details
View more product details Click for more details
stainless-round-tube-304-seamless-1superZoom-desk23131

4" OD x 0.5" Wall x 3" ID Stainless Round Tube 304 Seamless Part # 23330

4" OD x 0.5" Wall x 3" ID Stainless Round Tube 304 Seamless -
Part #: 23330
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

Update
$436.91 for 1
$436.91 ea.

Dimensions

  • Outer Diameter: 4"
  • Wall: 0.5"
  • Inner Diameter: 3"
Click for more details
stainless-round-tube-304-seamless-1superZoom-mob{product.code}

Key Features

CUSTOM CUT MTR FREE MTR Available
View more product details View more product details
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stainless-round-tube-304-seamless-1superZoom-desk23330

4" OD x 0.083" Wall x 3.834" ID Stainless Round Tube 304 Seamless Part # 14811

4" OD x 0.083" Wall x 3.834" ID Stainless Round Tube 304 Seamless -
Part #: 14811
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

Update
$229.16 for 1
$229.16 ea.

Dimensions

  • Outer Diameter: 4"
  • Wall: 0.083"
  • Inner Diameter: 3.834"
Click for more details
stainless-round-tube-304-seamless-1superZoom-mob{product.code}

Key Features

CUSTOM CUT MTR FREE MTR Available
View more product details View more product details
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stainless-round-tube-304-seamless-1superZoom-desk14811

4" OD x 0.375" Wall x 3.25" ID Stainless Steel Round Tube 304/304L Seamless Part # 26058

4" OD x 0.375" Wall x 3.25" ID Stainless Steel Round Tube 304/304L Seamless -
Part #: 26058
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

Update
$387.11 for 1
$387.11 ea.

Dimensions

  • Outer Diameter: 4"
  • Wall: 0.375"
  • Inner Diameter: 3.25"
Click for more details
stainless-round-tube-304-seamless-1superZoom-mob{product.code}

Key Features

MTR FREE MTR Available
View more product details View more product details
View more product details Click for more details
stainless-round-tube-304-seamless-1superZoom-desk26058

4 1/2" OD x 0.5" Wall x 3.5" ID Stainless Round Tube 304 Seamless Part # 21985

4 1/2" OD x 0.5" Wall x 3.5" ID Stainless Round Tube 304 Seamless -
Part #: 21985
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

Update
$354.30 for 1
$354.30 ea.

Dimensions

  • Outer Diameter: 4.5"
  • Wall: 0.5"
  • Inner Diameter: 3.5"
Click for more details
stainless-round-tube-304-seamless-1superZoom-mob{product.code}

Key Features

CUSTOM CUT MTR FREE MTR Available
View more product details View more product details
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stainless-round-tube-304-seamless-1superZoom-desk21985

4 1/2" OD x 0.375" Wall x 3.75" ID Stainless Round Tube 304 Seamless Part # 22681

4 1/2" OD x 0.375" Wall x 3.75" ID Stainless Round Tube 304 Seamless -
Part #: 22681
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

Update
$477.80 for 1
$477.80 ea.

Dimensions

  • Outer Diameter: 4.5"
  • Wall: 0.375"
  • Inner Diameter: 3.75"
Click for more details
stainless-round-tube-304-seamless-1superZoom-mob{product.code}

Key Features

CUSTOM CUT MTR FREE MTR Available
View more product details View more product details
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stainless-round-tube-304-seamless-1superZoom-desk22681

5" OD x 0.75" Wall x 3.5" ID Stainless Round Tube 304 Seamless Part # 23314

5" OD x 0.75" Wall x 3.5" ID Stainless Round Tube 304 Seamless -
Part #: 23314
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

Update
$935.93 for 1
$935.93 ea.

Dimensions

  • Outer Diameter: 5"
  • Wall: 0.75"
  • Inner Diameter: 3.5"
Click for more details
stainless-round-tube-304-seamless-1superZoom-mob{product.code}

Key Features

CUSTOM CUT MTR FREE MTR Available
View more product details View more product details
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stainless-round-tube-304-seamless-1superZoom-desk23314

5" OD x 0.25" Wall x 4.5" ID Stainless Round Tube 304 Seamless Part # 23829

5" OD x 0.25" Wall x 4.5" ID Stainless Round Tube 304 Seamless -
Part #: 23829
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

Update
$477.80 for 1
$477.80 ea.

Dimensions

  • Outer Diameter: 5"
  • Wall: 0.25"
  • Inner Diameter: 4.5"
Click for more details
stainless-round-tube-304-seamless-1superZoom-mob{product.code}

Key Features

CUSTOM CUT MTR FREE MTR Available
View more product details View more product details
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stainless-round-tube-304-seamless-1superZoom-desk23829

5" OD x 0.5" Wall x 4" ID Stainless Round Tube 304 Seamless Part # 26899

5" OD x 0.5" Wall x 4" ID Stainless Round Tube 304 Seamless -
Part #: 26899
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

Update
$723.61 for 1
$723.61 ea.

Dimensions

  • Outer Diameter: 5"
  • Wall: 0.5"
  • Inner Diameter: 4"
Click for more details
stainless-round-tube-304-seamless-1superZoom-mob{product.code}

Key Features

MTR FREE MTR Available
View more product details View more product details
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stainless-round-tube-304-seamless-1superZoom-desk26899

5 1/2" OD x 0.375" Wall x 4.75" ID Stainless Round Tube 304 Seamless -  Part # 28984

5 1/2" OD x 0.375" Wall x 4.75" ID Stainless Round Tube 304 Seamless-
Part #: 28984
Pricing and availability for this item changes frequently. Contact us now for a fast quote.

5 3/4" OD x 1" Wall x 3.75" ID Stainless Round Tube 304 Seamless -  Part # 23021

5 3/4" OD x 1" Wall x 3.75" ID Stainless Round Tube 304 Seamless-
Part #: 23021
Pricing and availability for this item changes frequently. Contact us now for a fast quote.

6" OD x 0.12" Wall x 5.76" ID Stainless Round Tube 304 Seamless Part # 20927

6" OD x 0.12" Wall x 5.76" ID Stainless Round Tube 304 Seamless -
Part #: 20927
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

Update
$268.04 for 1
$268.04 ea.

Dimensions

  • Outer Diameter: 6"
  • Wall: 0.12"
  • Inner Diameter: 5.76"
Click for more details
large-diameter-stainless-round-tube-1superZoom_300Wx300H-mob{product.code}

Key Features

CUSTOM CUT MTR FREE MTR Available
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large-diameter-stainless-round-tube-1superZoom_300Wx300H-desk20927

6mm OD x 0.5mm Wall x 5mm ID Stainless Round Tube 304 Metric 60" Length [+/- 2"] Part # 22389

6mm OD x 0.5mm Wall x 5mm ID Stainless Round Tube 304 Metric 60" Length [+/- 2"] -
Part #: 22389

Pack of 2

Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

Update
$243.09
$243.09 ea.

Dimensions

  • Outer Diameter: 6mm
  • Wall: 0.5mm
  • Inner Diameter: 5mm
Click for more details
stainless-round-tube-304-metric-1superZoom-mob{product.code}
Material Meets These Standard(s): ASTM-A312 , ASTM-A213 , ASTM-A269

Key Features

MTR FREE MTR Available
View more product details View more product details
View more product details Click for more details
stainless-round-tube-304-metric-1superZoom-desk22389

6mm OD x 1mm Wall x 4mm ID Stainless Round Tube 304 Metric 60" Length [+/- 2"] Part # 22390

6mm OD x 1mm Wall x 4mm ID Stainless Round Tube 304 Metric 60" Length [+/- 2"] -
Part #: 22390

Pack of 2

Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

Update
$200.98
$200.98 ea.

Dimensions

  • Outer Diameter: 6mm
  • Wall: 1mm
  • Inner Diameter: 4mm
Click for more details
stainless-round-tube-304-metric-1superZoom-mob{product.code}
Material Meets These Standard(s): ASTM-A312 , ASTM-A213 , ASTM-A269

Key Features

MTR FREE MTR Available
View more product details View more product details
View more product details Click for more details
stainless-round-tube-304-metric-1superZoom-desk22390

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