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Table of Content
- Advantages of Stainless Steel 304 Seamless Pipe
- Most Common Types of SS 304 Seamless Pipe
- SS 304 Seamless Pipe Specifications
- SS 304 Seamless Pipe Properties
- SS 304 Seamless Pipe Dimensions Chart
- SS 304 Seamless Pipe Thickness Chart
- How SS 304 Seamless Pipes Are Manufactured
- Heat Resistance & Pressure Ratings of SS 304 Pipe
- SS 304 Seamless Pipe Packing & Marking
- Quality Tests & Certifications
- Testing and Certifications for SS 304 Seamless Pipes
- Industrial Application of SS 304 Seamless Pipe
- Why Choose Neeka Tubes as Your SS 304 Seamless Pipe Supplier
- FAQs
Neeka Tubes is a leading stainless steel 304 seamless pipe manufacturer in India, producing high-quality pipes that satisfy industry requirements. We offer pipe in a variety of schedules (SCH 10, 40, 80), diameters, and custom cut lengths that comply with ASTM A312 TP304 / ASME SA312 specifications. These 304 stainless steel seamless tubes have an austenitic 18/8 grade structure with 18% chromium and 8% nickel, providing excellent corrosion resistance and mechanical strength. Our seamless stainless steel pipe India production serve industries including chemical, pharmaceutical, food processing, oil and gas, and water treatment systems. As a reputable UNS S30400 pipe exporter, we guarantee quality, timely delivery, and comprehensive paperwork support for both local and international export needs.
Best Deals, Guaranteed Quality! ASTM A312 TP304 Stainless Steel Seamless Pipe, ASTM A312M TP304 Seamless Tube, Stainless Steel 304 Seamless Pipe, SS 304 Seamless Pipe in India!
What Is ASTM A312 TP304 Seamless Pipe?
ASTM A312 TP304 seamless pipe is a high-quality stainless steel pipe that has no welding joints. This manufacturing technique produce a uniform structure that is suitable for high-pressure and high-temperature applications. TP304 stands for Type 304 stainless steel a chromium-nickel alloy noted for its high corrosion resistance and long service life.
The SS 304 seamless pipe contains 18β20% chromium and 8β10.5% nickel which give it strong resistance to rust and chemical attack. This 304 stainless steel pipe meet ASTM A312 and ASME SA312 standards. The UNS S30400 designation identifies this specific grade in international standards.
Our seamless stainless steel pipe offers excellent mechanical strength with a smooth internal surface finish. This austenitic stainless steel pipe handles temperature changes and maintains structural integrity under stress. Industries such as chemical processing, food & dairy operations, oil & gas transport, and heat exchanger systems use these pipes.
Advantages of Stainless Steel 304 Seamless Pipe
SS 304 seamless pipe advantages make them ideal for demanding applications that require strength, hygiene, and long-term reliability.
- No Welds = Leak-Free Strength The seamless design remove weak points which result in reliable flow in high-pressure systems.
- Smooth Bore = Better Fluid Flow Reduces friction loss, scaling, and energy consumption in process pipework.
- Corrosion Resistant in Most Environments Handles water, chemicals, and air exposure with little chance of pitting or rust.
- Ideal for Sanitary Applications Non-reactive surface is ideal for the food, beverage, and pharmaceutical industries.
- Long Life = Low Maintenance Less wear and fewer maintenance over time mean a lower cost of ownership.
- Tough Under Heat & Pressure It performs effectively in thermal boilers, heat exchangers, and pipelines.
The SA 312 TP304 Pipes are popular in food processing, chemical, pharmaceutical and marine industries because they resist rust. They are important for oil and gas pipelines, heat exchangers, boilers and building tasks. These pipes are also used in water treatment plants, dairy industries and construction projects because they are strong and hygienic. Also known as SS UNS S30400 Seamless Pipes work well for high-pressure and high-temperature applications because they can handle temperatures up to 870Β°C and have strong strength.
Most Common Types of Stainless Steel 304 Seamless Pipe
SS 304 Seamless Pipe
304 SS Round Pipe
SS 304 Schedule 5S Pipe
SS 304 Polished Pipe
SS 304 Schedule 40 Seamless Pipe
304 Stainless Steel Thin Wall Pipe
Stainless Steel 304 Custom Pipe
Stainless Steel 304 Cold Drawn Seamless Pipe
Stainless Steel 304 Seamless Pipe Specifications
Standard dimensions and technical specifications guide proper pipe selection for your project requirements. These specification ensure compatibility with existing systems and correct installation.
| Standard | AISI, DIN, EN, GB, JIS, ASTM, ASME |
| Pipe Dimensions | ANSI/ASME B36.19, B36.10 |
| Seamless Pipe OD | 6.00 mm OD up to 250 mm OD, Sizes up to 12β NB |
| Wall Thickness | 0.3mm – 50 mm |
| Available Sizes |
|
| Pipe Schedule | SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS |
| Finish & Surface Treatment | Polished, AP (Annealed & Pickled), BA (Bright & Annealed), MF, NO.1, NO.4, 2B, BA, HL, 8K, Mirror finish,etc |
| Form | Round, Square, Hollow, Rectangular, Hydraulic, Coiled, Straight Pipes, βUβ Shape, Pan Cake Coils etc. |
| Length | Single Random, Double Random, Standard & Cut length |
| End | Plain End, Beveled End, Treaded. |
| Manufacturing Technics | Seamless |
| Marking | All Pipes are marked as follows: Grade, Standard, OD, Thickness, Length, Heat No. (Or according to the customerβs request.) |
| Testing Reports |
|
Looking For Fastest Delivery of Stainless Steel 304 Seamless Pipe in Mumbai? Find Your Sizes and Thickness of SS 304 Seamless Round Pipes in Our Ready Stock.
304 Stainless Steel Seamless Pipe Chemical Composition
Chemical composition of ss 304 seamless pipe determines corrosion resistance of the pipe material. Understanding these percentages help engineers select the right grade for specific environmental conditions.
| Grade | C | Mn | Si | P | S | Cr | Ni |
| SS 304 | 0.08 max | 2 max | 1.00 max | 0.045 max | 0.030 max | 18 β 20 | 8 β 11 |
Mechanical Properties of SS 304 Seamless Pipe
UNS S30400 seamless pipe mechanical properties define the pipe’s strength, flexibility, and performance under stress conditions. These values help calculate safe operating pressures and temperature ranges for your application.
| Grade | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| SS 304 | 8.0 g/cm3 | 1400 Β°C (2550 Β°F) | Psi β 75000 , MPa β 515 | Psi β 30000 , MPa β 205 | 35 % |
Equivalent Grades For 304 Stainless Steel Seamless Pipe
International grade equivalents help buyers identify compatible materials across different standard systems. This comparison simplifies procurement when working with global suppliers or international project specifications.Β
| STANDARD | WERKSTOFF NR. | UNS | JIS | BS | GOST | AFNOR | EN |
| SS 304 | 1.4301 | S30400 | SUS 304 | 304S31 | 08Π₯18Π10 | Z7CN18β09 | X5CrNi18-10 |
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Stainless Steel 304 Seamless Pipe Dimensions In MM
| Nominal Bore Chart | Outside Diameter (O.D) | Schedule 5S | Schedule 10S | Schedule 40S | Schedule 80S | Schedule 160S | Schedule XXS | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wt mm | Weight (Kg./mt) | Wt mm | Weight (Kg./mt) | Wt mm | Weight (Kg./mt) | Wt mm | Weight (Kg./mt) | Wt mm | Weight (Kg./mt) | Wt mm | Weight (Kg./mt) | ||
| 3 | 10.3 | 1.24 | 0.276 | 1.24 | 0.28 | 1.73 | 0.37 | 2.41 | 0.47 | – | – | – | – |
| 6 | 13.7 | 1.24 | 0.390 | 1.65 | 0.49 | 2.24 | 0.631 | 3.02 | 0.80 | – | – | – | – |
| 10 | 17.1 | 1.24 | 0.490 | 1.65 | 0.63 | 2.31 | 0.845 | 3.20 | 1.10 | – | – | – | – |
| 15 | 21.3 | 1.65 | 0.800 | 2.11 | 1.00 | 2.77 | 1.27 | 3.75 | 1.62 | 4.75 | 1.94 | 7.47 | 2.55 |
| 20 | 26.7 | 1.65 | 1.03 | 2.11 | 1.28 | 2.87 | 1.68 | 3.91 | 2.20 | 5.54 | 2.89 | 7.82 | 3.63 |
| 25 | 33.4 | 1.65 | 1.30 | 2.77 | 2.09 | 3.38 | 2.50 | 4.55 | 3.24 | 6.35 | 4.24 | 9.09 | 5.45 |
| 40 | 48.3 | 1.65 | 1.91 | 2.77 | 3.11 | 3.68 | 4.05 | 5.08 | 5.41 | 7.14 | 7.25 | 10.16 | 9.54 |
| 50 | 60.3 | 1.65 | 2.40 | 2.77 | 3.93 | 3.91 | 5.44 | 5.54 | 7.48 | 8.74 | 11.1 | 11.07 | 13.44 |
| 100 | 114.3 | 2.11 | 5.84 | 3.05 | 8.36 | 6.02 | 16.07 | 8.56 | 22.3 | 13.49 | 33.54 | 17.12 | 41.03 |
| 200 | 219.1 | 2.77 | 14.79 | 3.76 | 19.96 | 8.18 | 42.6 | 12.7 | 64.6 | 23.0 | 111.2 | 22.23 | 107.8 |
| 300 | 323.9 | 3.96 | 31.36 | 4.57 | 36.07 | 12.70 | 97.5 | 17.48 | 131.0 | 30.23 | 238.76 | 35.56 | 282.79 |
| 600 | 609.6 | 5.54 | 82.47 | 6.35 | 94.45 | 17.48 | 255.41 | 30.96 | 442.08 | 59.54 | 808.22 | – | – |
Thickness Chart of SS 304 Seamless Pipe
| Sizes | SCH 10 304 Grade Stainless Steel Pipe | O.D | |
| DIA | |||
| Inch | DN | Thickness | Millimetre (mm) |
| 1 Inch | DN 25 | 2.77 | 33.4 |
| 2 Inch | DN 50 | 2.77 | 60.3 |
| 3 Inch | DN 80 | 3.05 | 88.9 |
| 4 Inch | DN 100 | 3.05 | 114.3 |
| 5 Inch | DN 125 | 3.43 | 141.3 |
| 6 Inch | DN 150 | 3.43 | 168.3 |
| 8 Inch | DN 200 | 3.76 | 219.1 |
| 10 Inch | DN 250 | 4.19 | 273.1 |
| 11/2 Inch | DN 40 | 2.77 | 48.3 |
| 11/4 Inch | DN 32 | 2.77 | 24.2 |
| 12 Inch | DN 300 | 4.57 | 323.9 |
| 14 Inch | DN 350 | 6.35 | 355.6 |
| 16 Inch | DN 400 | 6.35 | 406.4 |
| 18 Inch | DN 450 | 6.35 | 457.2 |
| 21/2 Inch | DN 65 | 3.05 | 73 |
| 22 Inch | DN 550 | 6.35 | 558.8 |
| 24 Inch | DN 600 | 6.35 | 609.6 |
| 34 Inch | DN 850 | 7.92 | 863.6 |
| 31/2 Inch | DN 90 | 3.05 | 101.6 |
| 36 Inch | DN 900 | 7.92 | 914.4 |
How SS 304 Seamless Pipes Are Manufactured
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SS 304L welded pipes are made through ERW stainless steel pipe process or HFW methods, ensuring strong welds, precision, and lasting corrosion resistance for structural and fluid systems.
- Slitting Coils β Cutting stainless steel 304L coils into accurate-width strips.
- Pipe Forming β Shaping strips into a cylindrical pipe profile.
- ERW/HFW Welding β To achieve a uniform seam, join edges using electric resistance or high-frequency welding.
- Bead Removal β Scarfing inner and outer weld beads for a smooth surface.
- Annealing β Restoring corrosion resistance and reducing internal stress.
- Sizing & Cutting β Straightening and cutting to standard or customized lengths.
- Surface Treatment β Applying passivation or polishing to achieve a clean finish.
- Inspection & Testing β Performing final checks and non-destructive testing (NDT) to ensure quality.
Heat Resistance & Pressure Ratings of SS 304 Pipe
Stainless steel 304 pipe’s heat resistance and pressure capabilities make it ideal for demanding thermal and mechanical applications in a variety of industries.
SS 304 seamless pipes can withstand continuous temperatures up to 870Β°C and intermittent temperatures up to 925Β°C. This 304 pipe temperature range is suitable for boilers, heat exchangers, steam distribution lines, and exhaust systems. The ASTM A312 TP304 temperature rating ensure safe operation under thermal stress.
SS 304 pressure rating varies depending on the pipe schedule and diameter. Seamless structure offers greater pressure tolerance than welded options. A standard SCH 40 seamless pipe (1″ NB) can sustain around 2900 PSI, with heavier schedules supporting even greater pressures. This 304 seamless pipe PSI capacity make it excellent for high-pressure stainless steel pipe applications.
The boiler grade stainless pipe perform well under thermal cycle circumstances which involve rapid heating and cooling. Engineers should verify pressure and temperature limit for specific applications using the ASME B31.1 and B31.3 design code to assure system safety.
Packaging & Delivery β Domestic & Export
Β Packaging
Proper packaging and reliable delivery maintain the quality of SS 304 seamless pipes during transportation to ensure their safe arrival at project sites around the world.
Pipes are fitted with plastic end covers to prevent the edge from damage during handling. Waterproof wrapping protect against moisture and surface contamination. Steel straps or ropes secure pipe for safe loading and transport. Export shipments are made in fumigated timber boxes, crates or pallets that meet international shipping regulations such as ISPM-15.
Each bundle has visible labels that show the size, grade, heat number and batch number for traceability. Our stainless steel pipe delivery India operation work with verified logistics partner to ensure quick lead times and careful handling. ASTM A312 TP304 pipe export packaging meet global shipping requirements. Throughout the shipment process both domestic and export customers receive tracking information and delivery status updates.
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Testing and Certifications for SS 304 Seamless Pipes
Testing of SS 304 seamless pipe ensures quality and reliability before delivery to customers. These comprehensive checks confirm pipe strength, durability, and compliance with international standards.
Hydrostatic tests verify pressure tolerance by filling pipes with water and applying test pressure. Hydrostatic test stainless steel pipe procedures detect leaks or weak points before installation. Ultrasonic and eddy current testing identify internal flaws and surface defects that could affect performance.
Dimensional accuracy gets confirmed through visual inspection and mechanical measurement. Mechanical testing such as tensile strength and hardness validation, confirm that material qualities satisfy specification. PMI (Positive Material Identification) testing validates the correct grade composition and eliminates material mix-ups.
Flattening and flaring tests evaluate ductility and forming capabilities. The ASTM A312 TP304 pipe certifications comprise EN 10204 3.1/3.2 certificates as well as Mill Test Certificates (MTCs). Stainless steel 304 pipe test result from NABL authorized labs and third-party inspection provide extra quality assurance. To be accepted worldwide, all pipes must meet the ASTM A312 and ASME SA312 requirements.Β
Why Choose Neeka Tubes as Your SS 304 Seamless Pipe Supplier
Choosing the right supplier matters as much as selecting quality material. We provide consistent performance, affordable price and dependable service for all of your stainless steel piping requirements.
- High-Quality Standards: Our ASTM A312 TP304 seamless pipes meet international standard and have complete traceability from reputable mills.
- Ready stock availability: Quick dispatch from inventory in a variety of sizes and schedules reduce project delays.
- Custom Solutions: Cut length, unique finish, and custom orders are available upon request for specialized needs.
- Complete Documentation: As a 304 seamless pipe manufacturer, we ensure that each pipe has MTC, EN 10204 3.1/3.2 certificate, and NABL lab report for quality assurance.
- Global Trust: Customers in India, the Middle East, Europe, and Southeast Asia rely on our pipes.
- Competitive Pricing: Fair SS 304 seamless pipe price per kg with flexible minimum order quantity support
- Expert Support:Β Dedicated customer service and technical advice will help you choose the best pipe for your application.
Searching for ready stock of Stainless Steel 304 Seamless Pipes in Mumbai?
Industrial Application of SS 304 Seamless Pipe
Oil & Gas Operations: ASTM A312 TP304 pipe applications in oil and gas include fluid transport and high-pressure systems. The pipe can withstand harsh circumstances without leaking or corroding.
Food & Beverage Processing: These pipes help to maintain hygiene in breweries, dairies, and food industries. Smooth interior reduce contamination and promote clean liquid transfer.
Pharmaceutical & Biotech Plants: SS 304 seamless pipe play an important role in sterile liquid handling. Their clean surface meet pharmaceutical and biotechnology standards.
Chemical Industry: Pipes can transport acidic, caustic, and corrosive substances with ease. Their corrosion resistance enable a long service life even in difficult environments.
Power Generation Systems: Applications of SS 304 seamless pipe extend to boilers, heat exchangers and steam lines. The material withstands high heat and pressure safely.
Water Treatment Facilities: These pipes serve in pressure piping for filtration and distribution. Their durability supports safe and reliable water systems.
Infrastructure & Construction: SS 304 seamless pipes provide strong and lasting piping for buildings and industrial projects. They offer both reliability and low upkeep.
Automotive & Exhaust Systems: In vehicles, the pipes resist heat and oxidation. They are used in exhaust systems where strength and temperature resistance are vital.Β
FAQs - SS 304 Seamless Pipe
Can SS 304 seamless pipes rust over time?
SS 304 seamless pipes are highly resistant to rust and corrosion, but prolonged exposure to harsh chemicals or salty water without proper care may cause minor surface rust. Regular cleaning and maintenance keep them looking new for years.
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Do SS 304 pipes last longer than copper or PPR pipes?
Β Yes. SS 304 seamless pipes generally outlast copper or PPR pipes because they have higher strength, better corrosion resistance, and are less prone to wear and tear in industrial and domestic applications.
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Are SS 304 seamless pipes affected by pressure and temperature changes?
Β No. SS 304 pipes can handle a wide range of pressures and temperatures without compromising performance, making them suitable for industrial, plumbing, and chemical applications.
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Is professional installation necessary for SS 304 seamless pipes?
Yes. Proper installation by professionals prevents stress points, leaks, and ensures the long-term durability of SS 304 piping systems. DIY installation is not recommended for high-pressure or industrial applications.
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Why should I avoid cheaper stainless steel like Grade 201?
Grade 201 stainless steel has lower corrosion resistance and a shorter lifespan than SS 304. Investing in SS 304 ensures longer, safer, and maintenance-free service.
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What sizes and dimensions are available for SS 304 seamless pipes?
Β SS 304 seamless pipes come in a variety of sizes from 1/8 inch to 30 inches, with different wall thicknesses to suit industrial and commercial applications.
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Can SS 304 seamless pipes be used outdoors?
Yes. They can be installed outdoors, but occasional cleaning is recommended to remove dirt or pollutants that may cause minor surface oxidation.
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