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Girgaon, Mumbai - 400004
Stainless Steel 304 Seamless Tubes Manufacturer in India
What Are Stainless Steel 304 Seamless Tubes?
Stainless Steel 304 Seamless Tubes are austenitic stainless steel tubes produced without a longitudinal weld, offering a uniform tubular structure for fluid handling, heat transfer and general industrial applications. Grade 304, designated as UNS S30400, is one of the most widely used stainless steel grades because of its combination of corrosion resistance, toughness and fabrication performance.
With chromium and nickel as its principal alloying elements, Stainless Steel 304 provides good resistance to atmospheric corrosion, moisture and many organic and inorganic environments. The alloy also offers good ductility, formability and weldability, making it suitable for a broad range of industrial equipment and process systems.
Stainless Steel 304 Seamless Tubes are supplied to applicable ASTM and ASME specifications, with ASTM A213 and ASME SA213 commonly used for seamless austenitic stainless steel tubing in boiler, superheater and heat-exchanger service. Depending on the application, tubes may also be supplied to other relevant product standards with specified dimensions, tolerances and testing requirements.
These tubes are used across chemical processing, food and beverage equipment, pharmaceutical systems, heat exchangers, water treatment, petrochemical facilities, architectural equipment and general engineering. Their balanced corrosion resistance and mechanical properties make Stainless Steel 304 suitable for both standard and demanding industrial service.
Kamal Steels is a Manufacturer and Stockist of Stainless Steel 304 Seamless Tubes, supplying standard and customized sizes, wall thicknesses, lengths and finishes for domestic and international projects. Material Test Certificates and applicable inspection documentation can be provided according to customer requirements.
Table of Contents
- Stainless Steel 304 Seamless Tube Specifications
- Stainless Steel 304 Seamless Tube Size Chart
- Stainless Steel 304 Seamless Tube Standards
- Stainless Steel 304 Seamless Tube Features
- Stainless Steel 304 Chemical Composition
- Stainless Steel 304 Mechanical Properties
- Stainless Steel 304 Seamless Tube Applications
- Industries Using Stainless Steel 304 Seamless Tubes
- Frequently Asked Questions
Stainless Steel 304 Seamless Tube Specifications
| Specification | Stainless Steel 304 Seamless Tubes |
|---|---|
| Material | Stainless Steel |
| Grade | 304 |
| UNS | S30400 |
| Tube Type | Seamless |
| ASTM Standard | ASTM A213, Applicable ASTM Specifications |
| ASME Standard | ASME SA213, Applicable ASME Specifications |
| Outside Diameter | As per requirement |
| Wall Thickness | As per requirement |
| Schedule | As required |
| Length | Random, Fixed or Customized |
| Finish | Annealed, Pickled, Bright Annealed, Polished or As required |
| Form | Round Tube |
Stainless Steel 304 Seamless Tube Size Chart
Stainless Steel 304 Seamless Tubes are available in a broad selection of diameters and wall thicknesses to accommodate process, heat-transfer, fluid-handling and engineering requirements.
| Tube Size | Outside Diameter (mm) | Wall Thickness | Length |
|---|---|---|---|
| 1/2" | 12.70 | As required | As required |
| 3/4" | 19.05 | As required | As required |
| 1" | 25.40 | As required | As required |
| 1-1/2" | 38.10 | As required | As required |
| 2" | 50.80 | As required | As required |
| 3" | 76.20 | As required | As required |
| 4" | 101.60 | As required | As required |
| 6" | 152.40 | As required | As required |
| 8" | 203.20 | As required | As required |
Stainless Steel 304 Seamless Tube Standards
| Standard | Application / Product Requirement |
|---|---|
| ASTM A213 | Seamless ferritic and austenitic alloy-steel boiler, superheater and heat-exchanger tubes |
| ASTM A269 | Austenitic stainless steel tubing for general corrosion-resisting service, where applicable |
| ASME SA213 | Applicable seamless ferritic and austenitic alloy-steel tubing requirements |
| ASME SA269 | Applicable austenitic stainless steel tubing requirements for general service, where applicable |
Stainless Steel 304 Seamless Tube Features
- Excellent resistance to general atmospheric corrosion
- Good resistance to moisture and many industrial environments
- Strong austenitic structure with good toughness
- Excellent formability and fabrication characteristics
- Good weldability for associated fabrication work
- Good resistance to oxidation under moderate service conditions
- Suitable for a wide range of process applications
- Good performance across a broad temperature range
- Seamless construction for demanding tube applications
- Available in multiple dimensions and surface finishes
Stainless Steel 304 Chemical Composition
| Element | Composition (%) |
|---|---|
| Chromium | 18.0 - 20.0 |
| Nickel | 8.0 - 10.5 |
| Carbon | 0.08 max. |
| Manganese | 2.00 max. |
| Silicon | 1.00 max. |
| Phosphorus | 0.045 max. |
| Sulfur | 0.030 max. |
| Iron | Balance |
Stainless Steel 304 Mechanical Properties
| Property | Minimum Requirement |
|---|---|
| Tensile Strength | 515 MPa min. |
| Yield Strength | 205 MPa min. |
| Elongation | 35% min. |
| Density | Approx. 8.0 g/cm³ |
Note: Mechanical requirements should be confirmed against the applicable ASTM or ASME product specification and material test certificate.
Stainless Steel 304 Seamless Tube Applications
Chemical Processing
Used for process lines and equipment where dependable general corrosion resistance is required.
Food Processing
Applied in fluid-transfer systems, processing equipment and hygienic industrial installations.
Pharmaceutical Equipment
Suitable for selected process equipment requiring cleanable and corrosion-resistant tubing.
Heat Exchangers
Used in appropriate heat-transfer systems requiring austenitic stainless steel tubing.
Water Treatment
Applied in suitable water-handling systems exposed to moisture and general corrosive conditions.
Petrochemical Equipment
Selected for process equipment and utility systems requiring corrosion-resistant tubing.
Industries Using Stainless Steel 304 Seamless Tubes
Chemical Industry
Uses 304 seamless tubes in selected processing and fluid-handling applications.
Food Industry
Applied in processing equipment and sanitary fluid-transfer systems.
Pharmaceutical Industry
Selected for process equipment where corrosion resistance and cleanability are important.
Petrochemical Industry
Used in appropriate process equipment and supporting utility systems.
Water Treatment Industry
Applied in suitable water-processing and fluid-handling equipment.
General Engineering
Used for machinery, fabricated equipment and industrial tubing requirements.
Frequently Asked Questions
Stainless Steel 304 Seamless Tubes are weld-free tubes manufactured from Stainless Steel 304 (UNS S30400 / WNR 1.4301), offering excellent corrosion resistance, high strength and superior pressure handling capability.
Our Stainless Steel 304 Seamless Tubes are manufactured according to ASTM A213, ASTM A269, ASTM A249, ASME SA213 and ASME SA269 international standards.
They offer outstanding corrosion resistance, seamless construction, excellent mechanical strength, superior weldability, hygienic properties, smooth internal surfaces and excellent performance under high-pressure and high-temperature conditions.
These tubes are widely used in heat exchangers, condensers, pharmaceutical plants, food processing industries, oil & gas, chemical processing, instrumentation, hydraulic systems, power generation and water treatment plants.
SS 304 Seamless Tubes are available in various outside diameters, wall thicknesses, schedules, surface finishes, and custom cut lengths to meet diverse industrial requirements.
Every tube undergoes Hydrostatic Testing, Eddy Current Testing (ECT), Ultrasonic Testing (UT), Positive Material Identification (PMI), Chemical Analysis, Mechanical Testing, Flattening Test, Flaring Test and Dimensional Inspection.
Yes. Their hygienic surface finish, excellent corrosion resistance, and easy cleanability make them ideal for food processing, dairy, beverage, pharmaceutical and biotechnology applications.
Yes. Every shipment includes EN 10204 3.1 Mill Test Certificates, inspection reports, material traceability documents, and third-party inspection certificates upon customer request.
Yes. Stainless Steel 304 Seamless Tubes offer excellent oxidation resistance and maintain good mechanical properties at elevated temperatures, making them suitable for heat exchangers and high-temperature process systems.
Kamal Steels offers certified ASTM-compliant Stainless Steel 304 Seamless Tubes, ready stock, competitive pricing, strict quality control, export-standard packaging, complete documentation and timely worldwide delivery for critical industrial applications.