Stainless Steel 304/304L Tubes Manufacturer & Supplier
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Midland Alloys Inc. is a leading manufacturer of 304 stainless steel tubes in India, delivering precisely manufactured solutions known for their excellent strength, durability, and corrosion resistance. Our Stainless Steel 304 and 304L tubes are widely trusted for their smooth fabrication and long-lasting performance. While Grade 304 is the industry standard, 304L with its low carbon content is ideal for welding and high-corrosion environments. These tubes are commonly used in oil & gas, chemical processing, food and pharmaceutical industries, construction and 304 stainless steel exhaust systems.
304 / 304L Stainless Steel Tubes Overview
AISI 304 and 304L stainless steel pipes belong to the austenitic category, which provides superior corrosion resistance, formability and weldability. The main difference between the two is in their composition content, 304L has a lower carbon composition, which is appropriate for welded forms or applications where corrosion is a matter of concern after welding. These grades find extensive applications in food processing, petrochemicals, architectural use and general industrial piping. Common designations include UNS S30400 (WNR 1.4301), ASME SA213 Stainless Steel 304L Tube, SA312 TP304 and ASTM A269 TP 304 Stainless Steel Seamless Tubes.
Advantages of 304 / 304L Stainless Steel Tubes
304 / 304L stainless steel tubes are among the most widely used materials thanks to their strength, corrosion resistance, and adaptability. They combine performance, durability, and affordability, making them a trusted choice across industries ranging from construction to food processing.
- Long-lasting performance is ensured by reliable rust protection in challenging conditions.
- Offers durability and low maintenance requirements.
- Maintains functionality even in applications with high temperatures.
- Ideal for everyday, architectural, and industrial applications.
- It is perfect for food and pharmaceutical applications as it is easy to clean.
- Offers excellent value together with long-term strength and durability.
SS 304/304L tubes are a go-to choice for general-purpose applications, providing excellent corrosion resistance, weldability, and affordability. Compared to SS 316, which contains molybdenum, 304/304L offers less chloride resistance but comes at a lower cost. SS 321 includes titanium for high-temperature stability but is less weld-friendly than 304L. SS 310 offers excellent high-temp performance but is more expensive. Duplex 202 is more difficult to machine, and form but it offers greater strength and superior resistance to harsh environments. The selection of the appropriate grade depends on the environment, mechanical stress, temperature exposure and cost.
Stainless Steel 304/304L Tubes Specifications
Knowing the specifications of stainless steel tubes helps in selecting the right product for mechanical design, pressure applications, and structural compatibility. We provide SS 304/304L tubes complying with national and international standards. Major specification factors include tube standard, size, seamless and welded dimensions, outside diameter, manufacturing process, schedule, length, end types and surface finish, as well as value-added services.
Seamless Tube OD : 1/8 -12" NPS
Welded Tube OD : 6.00 mm OD up to 914.4 mm OD
EFW Tube Size : 1 / 2" NB - 16" NB
ASTM A213, A269, A249, A511, A554 / ASME SA213, SA269, SA249, SA511, SA554
Seamless / Welded / ERW / Fabricated / CDW / 100% X Ray Welded
Round, Square, Rectangular, Hydraulic Etc
Single Random, Double Random, Standard & Cut length
Plain Ends (PE), Threaded Ends (TE), Bevelled Ends (BW), Grooved Mechanical Joints or Grooved Ends, TBE (Treaded Both Ends)
SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS
No. 2B - Mill finish/ Matte finish, No.8 - Mirror finish, No. 4 - Brushed finish, Bright, Annealing, Polished, Mirror
Types of Stainless Steel 304/304L Tubes
SS 304/304L tubes are available in various types, depending on their production process and cross-sectional shape. We supply seamless tubes, welded (ERW) tubes, cold-drawn tubes, and hot-finished tubes. Shapes include round, square, rectangular, coiled, and capillary formats each suited for different structural, aesthetic and industrial purposes.
Manufacturing Types
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Seamless tubeSeamless tube is perfect for high-pressure applications as it is made without a weld and has a smooth finish and excellent strength.
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Welded TubeUsually utilised for structural applications, this economical material is created by rolling and welding.
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Cold Drawn TubeProduced by high-frequency welding of cold-formed steel coil.
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Hot Finished TubeMade by fusion welding using electric current, usually for larger diameters.
Pipe Forms
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Round tubesRound tubes have a circular cross section and are often used for structural support, fluid transportation, and piping.
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Square TubePerfect for construction, supports, and frames, this tube has a square cross-section.
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Rectangular tubesRectangular tubes are used in fabrication, automotive, and structural projects because of their rectangular cross-section.
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Capillary tubesCapillary tubes are small-diameter tubes used in medical equipment, instrumentation, and refrigeration for accurate fluid management.
Flexible, coiled tubing is utilised in HVAC systems, condensers, and heat exchangers.
Contact us today to discuss how Stainless Steel 304/304L Tubes can benefit your application. Whether you need guidance in selecting the right Tubes or have specific requirements, our team of experts is here to help you find the optimal solution.
Technical Details & Delivery Condition
Understanding the chemical composition of SS 304 and 304L is important in their performance under varied conditions. Chromium and nickel content offers corrosion resistance and low carbon in 304L enhances weldability. The two grades usually contain 18–20% chromium and 8–12% nickel. The proportionate composition ensures uniformity of performance in corrosive and high-temperature environments.
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N |
| SS 304 | 0.08 max | 2 max | 0.75 max | 0.045 max | 0.030 max | 18 – 20 | – | 8 – 11 | – |
| SS 304L | 0.035 max | 2 max | 1.0 max | 0.045 max | 0.030 max | 18 – 20 | – | 8 – 13 | – |
Mechanical properties are paramount for design safety, long-term durability and stress capacity. Designers use parameters such as tensile strength, yield strength, elongation, and hardness to choose appropriate tubing. Our 304 and 304L stainless steel tubes comply with ASTM A312 and A249 standards, ensuring dependable strength and flexibility. Important properties include minimum tensile strength, yield strength, elongation percentage and maximum hardness
| Grades | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| SS 304 | 8.0 g/cm3 | 1400 °C (2550 °F) | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 35 % |
| SS 304L | 8.0 g/cm3 | 1400 °C (2550 °F) | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 35 % |
Tube weight is important for load analysis, logistics planning, and procurement decisions. Our weight chart makes it possible to estimate the total material weight in terms of outer diameter, wall thickness and length. The numbers comply with ASTM standards and industry regulations, and assist engineers and procurement departments in planning for fabrication and transportation accurately.
| Stainless Steel Tube Size and Weight | ||||||||||||
| Wall Thickness in mm | 0.5 | 0.6 | 0.7 | 0.8 | 1 | 1.2 | 1.6 | 2 | 2.6 | 3 | 3.2 | 3.6 |
| O. D. in mm Weight in kg/m | ||||||||||||
| 6 | 0.069 | 0.081 | 0.093 | 0.104 | 0.125 | 0.144 | 0.176 | – | – | – | – | – |
| 10 | 0.119 | 0.141 | 0.163 | 0.184 | 0.225 | 0.264 | 0.336 | – | – | – | – | – |
| 12.7 | 0.153 | 0.182 | 0.21 | 0.238 | 0.293 | 0.345 | 0.444 | – | – | – | – | – |
| 14 | 0.169 | 0.201 | 0.233 | 0.264 | 0.325 | 0.384 | 0.496 | – | – | – | – | – |
| 15.87 | 0.192 | 0.229 | 0.266 | 0.301 | 0.372 | 0.44 | 0.571 | 0.694 | – | – | – | – |
| 19 | 0.231 | 0.276 | 0.32 | 0.364 | 0.45 | 0.534 | 0.696 | 0.85 | 1.066 | 1.2 | 1.264 | – |
| 25 | 0.306 | 0.366 | 0.425 | 0.484 | 0.6 | 0.714 | 0.936 | 1.15 | 1.456 | 1.65 | 1.744 | 1.926 |
| 25.4 | 0.311 | 0.372 | 0.432 | 0.492 | 0.61 | 0.726 | 0.952 | 1.17 | 1.482 | 1.68 | 1.776 | 1.962 |
| 31.8 | – | – | – | – | – | 0.918 | 1.208 | 1.49 | 1.898 | 2.16 | 2.288 | 2.538 |
| 38 | – | – | – | – | – | 1.104 | 1.456 | 1.8 | 2.301 | 2.625 | 2.784 | 3.096 |
| 44.5 | – | – | – | – | – | 1.299 | 1.716 | 2.125 | 2.724 | 3.113 | 3.304 | 3.681 |
| 50.8 | – | – | – | – | – | – | 1.968 | 2.44 | 3.133 | 3.585 | 3.808 | 4.248 |
| 63.5 | – | – | – | – | – | – | 2.476 | 3.075 | 3.959 | 4.538 | 4.824 | 5.391 |
| 76.1 | – | – | – | – | – | – | 2.98 | 3.705 | 4.778 | 5.483 | 5.832 | 6.525 |
| 101.6 | – | – | – | – | – | – | 4 | 4.98 | 6.435 | 7.395 | 7.872 | 8.82 |
| 114.3 | – | – | – | – | – | – | 4.453 | 5.547 | 7.173 | 8.247 | 8.78 | 9.84 |
| 127 | – | – | – | – | – | – | 4.955 | 6.175 | 7.989 | 9.188 | 9.785 | 10.98 |
| 152.4 | – | – | – | – | – | – | 5.96 | 7.429 | 9.62 | 11.07 | 11.792 | 13.231 |
For high-temperature and high-pressure systems, stainless steel tubes’ physical and thermal properties are essential. For weight and structural stress calculations, the density of SS 304 and 304L, it should be approximately 7.93 g/cm³. Their melting temperature is between 1400–1450 °C, allowing for high-temperature applications such as heat exchangers and furnace components. Thermal conductivity is approximately 16.2 W/m·K at 100°C and will assist in accurate heat transfer designs. The thermal expansion coefficient is about 17.2 × 10⁻⁶/°C in the 0–100°C range, a consideration of great relevance in designing systems, that undergo thermal cycling. These values follow ASTM A480 and EN material standards.
The price of stainless steel 304 and 304L tubes in India ranges from ₹250 to ₹350 per Kg, depending on size, wall thickness, surface finish, and order volume. Mirror-polished or thick-walled variants may cost more. Prices also fluctuate with market demand and raw material availability. For the most accurate and competitive quote, buyers should reach out directly to Midland Alloys. Based in Mumbai, we maintain ready stock and offer fast delivery nationwide.
SS 304 and 304L tubes offer excellent resistance to corrosion in oxidising and mild reducing environments. Their resistance to moisture, various acids, alkalis and cleaning agents makes them appropriate for use in food-grade, chemical, and marine applications. It don’t rust easily, even in environments that are acidic or rich in chlorides, and can withstand oxidation at high temperatures. For example, they perform well in food processing plants using acidic cleaners or marine setups with salty air exposure.
Stainless Steel Tubes Grades We Offer
Difference Between 304 and 304L Stainless Steel
Manufacturing Process of 304/304L Stainless Steel Tubes
SS 304/304L tubes begin with raw stainless steel billets, which are heated and then pierced or extruded into hollow forms. For seamless tubes, the process involves hot extrusion followed by cold drawing to achieve precise dimensions. Welded tubes are manufactured by rolling strips of stainless steel into tube form and then welding along the seam. The tubes are shaped, annealed to remove stress, pickled to strip away oxidation, straightened, inspected and tested for mechanical properties, surface finishes and dimensional tolerances. We uses both internal and external testing to make sure that each tube satisfies stringent quality standards.
Round Bar
Analytic
Cut to Length
Centering
Heating
Perforation
Inspection of Size
Pickling
Inspection of Surface
Lubricating
Cold Drawing (Cold Rolling)
Degreasing
Annealing
Straightening
Cut
Pickling / Passivating
Inspection
Analytic
Marking
Packing & Shipping
Applications and Uses of Stainless Steel 304/304L Tubes
SS 304/304L tubes are widely used due to their strength, clean surface and resistance to corrosion. In the food and beverage industry, they provide hygienic piping and fluid transfer. Tubes used in chemicals and pharmaceuticals can withstand corrosive substances. The oil & gas industry uses these tubes in process lines and offshore buildings. Construction industries utilize them for structural frames, whereas marine and water treatment plants use them for their salt and moisture resistance. They are also used in automotive exhausts, heat exchangers, and architectural elements.
Customisation Options & Stock Availability
Midland Alloys offers full customization for SS 304/304L tubes. We provide cut-to-length stainless tubing, non-standard diameters, custom wall thickness, special finishes (polished, pickled, passivated) and specific packaging requirements. Material test reports, traceability documentation, and third-party inspections are some of our value-added services. We ensure timely delivery and stock availability for all orders, regardless of their sizes and schedules.
Midland Alloys Inc., based in India, exports stainless steel 304/304L tubes to major global markets. We often supply to Gulf nations that support infrastructure, industrial, and oil and gas projects, including the United Arab Emirates, Saudi Arabia, Oman, Qatar and Kuwait. In Europe, we serve customers in Germany, the United Kingdom, France, and Italy. We provide services to clients in South Korea, Singapore, Malaysia, and Indonesia in the Asia-Pacific regions. We also deliver our products to Africa and Latin America, including South Africa, Egypt, Nigeria, and Brazil. We follow all the international documentation standards for all our exports with adequate markings, customs clearance, and seaworthy packaging. We cooperate with OEMs, EPC contractors, and distributors worldwide to ensure swift, guaranteed deliveries.
Each of our stainless steel 304/304L tubes meets ASTM A312, A213, A249, and EN standards. Midland Alloys holds ISO 9001:2015 certification, and its tubes are certified by Mill Test Certificates (EN 10204 3.1/3.2). Third-party inspection reports can be arranged by TUV, DNV, BV, SGS and Lloyd’s . Our tubes adhere to PED 2014/68/EU, NACE MR0175, and AD 2000 W0. We also make sure that these tubes comply with industry quality and safety codes.
maintained. Every stainless steel pipe is tested and verified before shipment, making Midland Alloys a dependable PED certified stainless steel pipe supplier in India.
We ship SS 304/304L tubes with export-grade packaging materials such as HDPE wraps, wooden boxes, capped bundles and shrink wraps to deliver the products. Each package includes labels with grade, size, heat number and standards. We deliver our goods internationally by air or sea and deliver them throughout India by road or rail. Our logistics team manages project-based deliveries, urgent dispatches, and large orders. As customized products have strict deadlines, we ensure same-day dispatch for stock items. Test results, packing lists and records of country-specific compliance are examples of export documentation.
Why Choose Midland Alloys Inc. for SS 304/304L Tubes
Midland Alloys Inc. is a leading Indian manufacturer and exporter of high-grade SS 304/304L tubes. To deliver dependable, verified products, we adhere to international standards like ASTM and EN as well as ISO-certified processes. We provide full customization for our tubes, including cut-to-length, custom sizes and special finishes. Additionally we provide services to clients in the Gulf, Southeast Asia, Africa, and Europe. We perform strict quality checks on each product and also provide mill test certificates and third-party inspection reports. Our team ensures on-time delivery and has expert handling of bulk orders. As we provide lasting quality, professional service and trusted long-term partnerships, our customers get in touch with us.
FAQs: SS 304/304L Tubes
Surface finish impacts corrosion resistance and hygiene. Polished finishes are ideal for food and pharma use.
Yes. They are stored in a dry, clean place to avoid surface contamination or corrosion.
Depending on the application, the maximum service temperature for 304/304L stainless steel tubes is up to 870°C for intermittent service and 925°C for continuous exposure.
