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Stainless Steel 304L Tubing

Stainless Steel 304L Tubing

Stainless steel 304L tubing is a low-carbon variant of the standard 304 grade, also referred to as TP304L or 304L stainless steel tube. The 0.03% reduction in carbon content makes it highly resistant to sensitisation during welding. It is widely used across food processing, pharmaceuticals, oil and gas, and chemical industries where corrosion resistance and weld integrity are non-negotiable.

Stainless Steel 304L Tubing Price

Stainless steel 304L tubing is priced based on tubing form, size, finish, and order quantity. Understanding the key pricing parameters helps in accurate sourcing and budgeting.

Approximate price range:

In India, the stainless steel 304L tubing price per kg and per foot both vary. It generally costs between INR 220 and 320 per kg. Seamless tubes are more expensive, depending on their diameter and wall thickness.

Cost per foot (approx.):

A standard 1-inch 304L seamless tube (Schedule 40) costs per foot. Larger diameters and heavier wall schedules increase the cost proportionally. The stainless steel 304L tubing price per kg and per foot both vary by order size and finish specification.

Factors affecting the price:

Raw material cost, surface finish (polished vs. mill finish), tubing type (seamless vs. welded), and order volume are the 4 primary factors that determine the final stainless steel 304L tube price. Bulk orders reduce the per-kg rate.

Available Types Of Stainless Steel 304L Tubing

The 304L stainless steel tube is available in 13 standard manufacturing forms to meet structural, industrial, and instrumentation requirements.

  • 304L stainless steel square tubing
  • 304L stainless steel seamless tubing
  • 304L stainless steel rectangular tubing
  • 304L stainless steel ERW tubing
  • 304L stainless steel round tubing
  • 304L stainless steel oval tubing
  • 304L stainless steel ornamental tubing
  • 304L stainless steel welded tubing
  • 304L stainless steel furniture tubing
  • 304L stainless steel seamless heat exchanger tubing
  • 304L stainless steel seamless U tubing
  • 304L stainless steel seamless instrumentation tubing
  • 304L stainless steel seamless corrugated tubing

Stainless Steel 304L Tubing Specifications

Below are the standard specifications for stainless steel 304L tubing, covering size range, forms, finishes, and relevant standards.

Parameter

Details

Standards & Grades

ASTM A213, ASTM A269, ASTM A249, ASTM A312, ASME SA213, ASME SA269

304L SS tubing sizes

OD: 6.35 mm to 610 mm

tubing schedules

SCH 5S, SCH 10S, SCH 40S, SCH 80S, SCH 160, XXS

Forms available

Seamless, Welded, ERW, EFW, U-Tube, Instrumentation

Wall thickness

0.5 mm to 50 mm

Finish

2B, No. 4, BA, Mirror, Pickled, Electropolished

Chemical Composition of Stainless Steel 304L Tubing

The chemical makeup of 304L tubing defines its corrosion resistance and weldability. The low carbon content, 0.03% max, is what distinguishes it from standard 304 grade and prevents carbide precipitation during welding.

Product

Ni

Mn

Cr

P

Si

C

S

Mo

N

Stainless steel 304L

8–13

2.0 max

18–20

0.045 max

1.0 max

0.035 max

0.03 max

Mechanical Properties Of Stainless Steel 304L Tubing

These 5 mechanical property values define the structural performance of 304L tubing under load and operating temperature. All values conform to standard ASTM test conditions.


Elongation

Density

Yield strength (0.2% offset)

Tensile strength

Melting point

35%

8.0 g/cm³

30,000 psi / 205 MPa

75,000 psi / 515 MPa

1,400°C (2,550°F)

Size Chart Of Stainless Steel 304L Tubing

The table below covers standard 304L stainless steel tube sizes across common outside diameters, wall thicknesses, and weights per metre. Use this as a reference to match the tube dimensions to your application requirements.

Tube size (OD in inches)

BW and Ga.

Wall THK

Inside Dia (I.D.)

Weight (kg)

7/16

18

0.049

0.34

0.2036

1/4

25

0.02

0.21

0.0491

1/4

22

0.028

0.194

0.0664

1/4

21

0.032

0.187

0.0745

1/4

20

0.035

0.18

0.0804

1/4

18

0.049

0.152

0.1052

1/4

16

0.065

0.12

0.1284

5/16

20

0.035

0.242

0.1039

5/16

18

0.049

0.214

0.1382

5/16

16

0.065

0.182

0.1722

3/8

22

0.028

0.319

0.1038

3/8

20

0.035

0.305

0.1271

3/8

18

0.049

0.277

0.1706

3/8

16

0.065

0.245

0.2152

1/2

25

0.02

0.46

0.1025

1/2

20

0.035

0.43

0.1738

1/2

18

0.049

0.402

0.236

1/2

16

0.065

0.37

0.302

5/8

20

0.035

0.555

0.2205

5/8

18

0.049

0.527

0.3014

5/8

16

0.065

0.495

0.3888

3/4

20

0.035

0.68

0.2673

3/4

18

0.049

0.652

0.3668

3/4

16

0.065

0.62

0.4755

3/4

14

0.083

0.584

0.5913

1/8

22

0.028

0.069

0.029

1/8

20

0.035

0.055

0.0336

3/16

22

0.028

0.131

0.0478

7/8

18

0.049

0.777

0.4323

7/8

16

0.065

0.745

0.5623

7/8

11

0.12

0.635

0.9676

1

20

0.035

0.93

0.3607

1

18

0.049

0.902

0.4977

1

16

0.065

0.87

0.6491

1

14

0.083

0.834

0.8129

1

11

0.12

0.76

1.1278

1-1/4

11

0.12

1.01

1.448

Key Features Of Stainless Steel 304L Tubing

The 304L stainless steel tube carries 7 performance advantages that make it one of the most widely specified tubing grades across industrial and commercial applications.

  • Corrosion resistance
  • High temperature strength
  • Weldability
  • Formability and fabrication
  • Strength and durability
  • Cost effectiveness
  • Aesthetic appeal

Applications Of Stainless Steel 304L Tubing

304L stainless steel tube supplier networks across India stock this grade specifically because it serves 7 high-demand industries where hygiene, corrosion resistance, and structural reliability are all required simultaneously.

  • Industrial applications
  • Transportation industry
  • Food processing
  • Medical equipment
  • Oil and gas industry
  • Chemical processing
  • Water treatment

How To Choose The Right Stainless Steel 304L Tubing

Choosing the right 304L stainless steel tube supplier directly affects material quality, project timelines, and long-term performance. Evaluate any supplier across these 6 criteria before placing an order.

Evaluate the manufacturer's technical expertise:

A qualified manufacturer maintains detailed knowledge of low-carbon austenitic grades, including TP304L. Request material test reports (MTRs), mill certifications, and grade-specific datasheets before confirming any order.

Check grade availability and product range:

A reliable 304L stainless steel tube supplier maintains a ready inventory across seamless, welded, ERW, and instrumentation tube forms. Avoid suppliers who source only on demand; lead time risk is high.

Verify quality certifications and testing capabilities:

Confirm ISO 9001 certification and the ability to produce NDT reports, hydrostatic test results, and third-party inspection documents from bodies such as SGS or Bureau Veritas.

Examine the strength of raw material sourcing:

SS 304L tubing should come from certified mills. Request mill traceability documents and verify that raw material procurement complies with ASTM A213, A269, or equivalent international standards.

Assess customisation capabilities:

If the project requires non-standard OD, special wall thickness, or specific finish grades, confirm that the manufacturer supports custom fabrication within standard lead times.

Review delivery timelines and supply capacity:

Confirm dispatch capacity, warehouse location, and the supplier's ability to handle urgent or large-volume orders. On-time delivery is a direct indicator of operational reliability.

Stainless steel 304L tubing is a low-carbon variant of the standard 304 grade, also referred to as TP304L or 304L stainless steel tube. The 0.03% reduction in carbon content makes it highly resistant to sensitisation during welding. It is widely used across food processing, pharmaceuticals, oil and gas, and chemical industries where corrosion resistance and weld integrity are non-negotiable.

Stainless Steel 304L Tubing Price

Stainless steel 304L tubing is priced based on tubing form, size, finish, and order quantity. Understanding the key pricing parameters helps in accurate sourcing and budgeting.

Approximate price range:

In India, the stainless steel 304L tubing price per kg and per foot both vary. It generally costs between INR 220 and 320 per kg. Seamless tubes are more expensive, depending on their diameter and wall thickness.

Cost per foot (approx.):

A standard 1-inch 304L seamless tube (Schedule 40) costs per foot. Larger diameters and heavier wall schedules increase the cost proportionally. The stainless steel 304L tubing price per kg and per foot both vary by order size and finish specification.

Factors affecting the price:

Raw material cost, surface finish (polished vs. mill finish), tubing type (seamless vs. welded), and order volume are the 4 primary factors that determine the final stainless steel 304L tube price. Bulk orders reduce the per-kg rate.

Available Types Of Stainless Steel 304L Tubing

The 304L stainless steel tube is available in 13 standard manufacturing forms to meet structural, industrial, and instrumentation requirements.

  • 304L stainless steel square tubing
  • 304L stainless steel seamless tubing
  • 304L stainless steel rectangular tubing
  • 304L stainless steel ERW tubing
  • 304L stainless steel round tubing
  • 304L stainless steel oval tubing
  • 304L stainless steel ornamental tubing
  • 304L stainless steel welded tubing
  • 304L stainless steel furniture tubing
  • 304L stainless steel seamless heat exchanger tubing
  • 304L stainless steel seamless U tubing
  • 304L stainless steel seamless instrumentation tubing
  • 304L stainless steel seamless corrugated tubing

Stainless Steel 304L Tubing Specifications

Below are the standard specifications for stainless steel 304L tubing, covering size range, forms, finishes, and relevant standards.

Parameter

Details

Standards & Grades

ASTM A213, ASTM A269, ASTM A249, ASTM A312, ASME SA213, ASME SA269

304L SS tubing sizes

OD: 6.35 mm to 610 mm

tubing schedules

SCH 5S, SCH 10S, SCH 40S, SCH 80S, SCH 160, XXS

Forms available

Seamless, Welded, ERW, EFW, U-Tube, Instrumentation

Wall thickness

0.5 mm to 50 mm

Finish

2B, No. 4, BA, Mirror, Pickled, Electropolished

Chemical Composition of Stainless Steel 304L Tubing

The chemical makeup of 304L tubing defines its corrosion resistance and weldability. The low carbon content, 0.03% max, is what distinguishes it from standard 304 grade and prevents carbide precipitation during welding.

Product

Ni

Mn

Cr

P

Si

C

S

Mo

N

Stainless steel 304L

8–13

2.0 max

18–20

0.045 max

1.0 max

0.035 max

0.03 max

Mechanical Properties Of Stainless Steel 304L Tubing

These 5 mechanical property values define the structural performance of 304L tubing under load and operating temperature. All values conform to standard ASTM test conditions.


Elongation

Density

Yield strength (0.2% offset)

Tensile strength

Melting point

35%

8.0 g/cm³

30,000 psi / 205 MPa

75,000 psi / 515 MPa

1,400°C (2,550°F)

Size Chart Of Stainless Steel 304L Tubing

The table below covers standard 304L stainless steel tube sizes across common outside diameters, wall thicknesses, and weights per metre. Use this as a reference to match the tube dimensions to your application requirements.

Tube size (OD in inches)

BW and Ga.

Wall THK

Inside Dia (I.D.)

Weight (kg)

7/16

18

0.049

0.34

0.2036

1/4

25

0.02

0.21

0.0491

1/4

22

0.028

0.194

0.0664

1/4

21

0.032

0.187

0.0745

1/4

20

0.035

0.18

0.0804

1/4

18

0.049

0.152

0.1052

1/4

16

0.065

0.12

0.1284

5/16

20

0.035

0.242

0.1039

5/16

18

0.049

0.214

0.1382

5/16

16

0.065

0.182

0.1722

3/8

22

0.028

0.319

0.1038

3/8

20

0.035

0.305

0.1271

3/8

18

0.049

0.277

0.1706

3/8

16

0.065

0.245

0.2152

1/2

25

0.02

0.46

0.1025

1/2

20

0.035

0.43

0.1738

1/2

18

0.049

0.402

0.236

1/2

16

0.065

0.37

0.302

5/8

20

0.035

0.555

0.2205

5/8

18

0.049

0.527

0.3014

5/8

16

0.065

0.495

0.3888

3/4

20

0.035

0.68

0.2673

3/4

18

0.049

0.652

0.3668

3/4

16

0.065

0.62

0.4755

3/4

14

0.083

0.584

0.5913

1/8

22

0.028

0.069

0.029

1/8

20

0.035

0.055

0.0336

3/16

22

0.028

0.131

0.0478

7/8

18

0.049

0.777

0.4323

7/8

16

0.065

0.745

0.5623

7/8

11

0.12

0.635

0.9676

1

20

0.035

0.93

0.3607

1

18

0.049

0.902

0.4977

1

16

0.065

0.87

0.6491

1

14

0.083

0.834

0.8129

1

11

0.12

0.76

1.1278

1-1/4

11

0.12

1.01

1.448

Key Features Of Stainless Steel 304L Tubing

The 304L stainless steel tube carries 7 performance advantages that make it one of the most widely specified tubing grades across industrial and commercial applications.

  • Corrosion resistance
  • High temperature strength
  • Weldability
  • Formability and fabrication
  • Strength and durability
  • Cost effectiveness
  • Aesthetic appeal

Applications Of Stainless Steel 304L Tubing

304L stainless steel tube supplier networks across India stock this grade specifically because it serves 7 high-demand industries where hygiene, corrosion resistance, and structural reliability are all required simultaneously.

  • Industrial applications
  • Transportation industry
  • Food processing
  • Medical equipment
  • Oil and gas industry
  • Chemical processing
  • Water treatment

How To Choose The Right Stainless Steel 304L Tubing

Choosing the right 304L stainless steel tube supplier directly affects material quality, project timelines, and long-term performance. Evaluate any supplier across these 6 criteria before placing an order.

Evaluate the manufacturer's technical expertise:

A qualified manufacturer maintains detailed knowledge of low-carbon austenitic grades, including TP304L. Request material test reports (MTRs), mill certifications, and grade-specific datasheets before confirming any order.

Check grade availability and product range:

A reliable 304L stainless steel tube supplier maintains a ready inventory across seamless, welded, ERW, and instrumentation tube forms. Avoid suppliers who source only on demand; lead time risk is high.

Verify quality certifications and testing capabilities:

Confirm ISO 9001 certification and the ability to produce NDT reports, hydrostatic test results, and third-party inspection documents from bodies such as SGS or Bureau Veritas.

Examine the strength of raw material sourcing:

SS 304L tubing should come from certified mills. Request mill traceability documents and verify that raw material procurement complies with ASTM A213, A269, or equivalent international standards.

Assess customisation capabilities:

If the project requires non-standard OD, special wall thickness, or specific finish grades, confirm that the manufacturer supports custom fabrication within standard lead times.

Review delivery timelines and supply capacity:

Confirm dispatch capacity, warehouse location, and the supplier's ability to handle urgent or large-volume orders. On-time delivery is a direct indicator of operational reliability.

Stainless Steel 304L Tubing Suppliers

Stainless Steel 304L Tubing FAQ's  

In India, stainless steel 304L tubing usually costs INR 220 to INR 320 per kg. The exact price depends on the tube type, OD, wall thickness, surface finish, and order quantity. Seamless tubes are more expensive than welded ones. Special sizes and third-party inspections increase the final price.

The per-kg price of seamless SS 304L tubing in India ranges between INR 350 and INR 900. Welded and ERW types cost roughly INR 180 per kilogram. Buying in bulk and choosing a standard mill finish usually reduces the price per kg.

Stainless steel 304L tubing is a low-carbon austenitic tube with a maximum carbon content of 0.03%. It is designed to prevent sensitisation during and after welding, making it suitable for applications where post-weld annealing is not practical.

SS 304L tubing conforms to ASTM A213, ASTM A269, ASTM A249, ASTM A312, and ASME SA213 / SA269. The UNS designation is S30403.

The key difference is how much carbon they contain. SS 304 has up to 0.08% carbon, and 304L has up to 0.03%. Because 304L has less carbon, it doesn’t form harmful carbides when welded, so it’s usually better for welded parts.

304L stainless steel tube sizes range from 6.35 mm to 610 mm in outer diameter, with wall thicknesses from 0.5 mm to 50 mm. Standard lengths are 6 metres (single random) and 12 metres (double random). Custom lengths are available on request.

SS 304L tubing is available in 13 forms: square, seamless, rectangular, ERW, round, oval, ornamental, welded, furniture, seamless heat exchanger, seamless U-tube, seamless instrumentation, and seamless corrugated tubing.