304L Stainless Steel Pipe Manufacturer & Supplier
Metinox Overseas is a company which manufactures and supplies SS304L Seamless Pipes, which have been developed with high resistance to corrosion in the harsh industrial conditions. Our ASTM A312 TP304L and UNS S30403 Pipes are made with 18-20 percent chromium and 8-12 percent nickel, with superior weldability and formability. Our Stainless Steel 304L Pipe has low content of carbide (max 0.03) when compared to the normal 304 grade which prevents the precipitation of carbide and intergranular corrosion in the welded sections without heat treatment after welding.
Seamless Pipes SS 304L is mainly used in petrochemical handling processes, in the marine industry and in pharmaceutical manufacturing sector, in food processing equipment and in storing cryogenic products where corrosion resistance is of primary importance. The austenitic AISI 304L Pipes have the least tensile strength of 485 Mpa and yield strength of 170 Mpa such that structural integrity can be maintained by both cryogenic conditions (-269�C) and high service conditions (800�C). Sold in seamless, welded and ERW in schedules ranging between SCH 5S and SCH XXS, 1/8 to 36 NB. All the WNR 1.4307 Pipe are subjected to rigorous testing of hydrostatic pressure, ultrasonic inspection, and PMI verification that are in compliance to ASTM A358 and ASTM A269 standards. To improve chloride resistance, we recommend our 316L.
Table of Contents
- SS 304L Pipe Technical Specifications
- UNS S30403 Equivalent Grades
- 304L Stainless Steel Chemical Composition
- Mechanical Properties of ASME SA312 SS TP304L
- SS 304L Stainless Steel Pipe Dimensions & Size Chart
- SS 304L Pipe Size Range by Manufacturing Type
- Standard Weight & Wall Thickness for SS 304L Pipes
- Is 304L Stainless Steel Good Quality?
- Corrosion Resistance of 304L Stainless Steel
- 304L Stainless Steel Pipe Price List 2025
- Applications of SS 304L Pipe in the Industry
- Why Choose SS 304L Pipes from Metinox Overseas?
- SS 304L Pipe Delivery Time & CIF Pricing by Country
- Other Types of Stainless Steel 304L Pipes
- Popular Locations Where We Supply SS 304L Pipes
- People Also Search For
- Frequently Asked Questions (FAQ)
SS 304L Pipe Technical Specifications
The following table outlines the diverse manufacturing standards and size ranges available for our 304L pipes to ensure compliance with global engineering requirements.
| Feature | Details |
| Specifications | ASTM A312, A358 / ASME SA312, SA358 |
| Outside Diameter | 6.00 mm OD up to 914.4 mm OD (up to 24" NB Ex-stock) |
| Thickness Range | 0.3mm � 50 mm (SCH 5, 10, 40, 80, 80S, 160, XXS, XS) |
| Type | Seamless / ERW / Welded / Fabricated / CDW |
| Form | Round, Square, Rectangular Pipes |
| Length | Single Random, Double Random & Required Cut Length |
| End | Plain End, Beveled End, Treaded |
| Outside Finish | 2B, No.4, No.1, No.8 Mirror Finish, Polished |
| Delivery Condition | Annealed and Pickled, Polished, Bright Annealed, Cold Drawn |
UNS S30403 Equivalent Grades
Stainless Steel 304L is recognized globally under various international standards, ensuring its compatibility for cross-border engineering projects and material substitution.
| STANDARD | UNS | WERKSTOFF NR. | AFNOR | EN | JIS | BS | GOST |
| SS 304L | S30403 | 1.4306 / 1.4307 | Z3CN18-10 | X2CrNi18-9 | SUS 304L | 304S11 | 03?18?11 |
304L Stainless Steel Chemical Composition
The precisely controlled chemical makeup of UNS S30403 ensures low carbon content, which is the key factor in providing enhanced weldability and corrosion resistance.
| Grade | C (max) | Mn (max) | Si (max) | P (max) | S (max) | Cr | Ni | N |
| SS 304L | 0.035% | 2.0% | 1.0% | 0.045% | 0.03% | 18 � 20% | 8 � 13% | - |
Mechanical Properties of ASME SA312 SS TP304L
Our SS 304L pipes exhibit superior tensile strength and elongation properties, making them reliable for high-pressure service and structural integrity.
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (%) min | Hardness (Rockwell B) max | Hardness (Brinell) max |
| SS 304L | 485 | 170 | 40 | 92 | 201 |
SS 304L Stainless Steel Pipe Dimensions & Size Chart
Metinox Overseas supplies SS 304L pipes in a vast array of sizes and thicknesses, ranging from small precision tubes to large-diameter industrial pipelines, compliant with global standards like ASTM and DIN.
| Feature | Range / Details |
| Nominal Pipe Size (NPS) | 1/8" (6.35 mm) to 48" (1219.2 mm) |
| Schedule (Wall Thickness) | SCH 5, 10, 20, 40, 80, 120, 160, STD, XS, XXS |
| Dimensional Standards | ASTM A312, A358, ASME SA312, SA358, API, DIN, EN, BS |
| Forms Available | Round, Square, Rectangular, Hydraulic, Hollow |
| Pipe Ends | Plain End, Beveled End, Threaded (Treaded) |
SS 304L Pipe Size Range by Manufacturing Type
Different manufacturing methods allow for specific size capabilities; we specialize in both small-bore seamless pipes and large-diameter EFW/LSAW solutions for heavy industrial use.
| Pipe Manufacturing Type | Size Range (Nominal Bore) |
| SS 304L Seamless Pipes | 1/2" NB to 16" NB |
| SS 304L ERW Pipes | 1/2" NB to 24" NB (Also 1/8" to 30" NB) |
| SS 304L EFW Pipes | 6" NB to 100" NB (Specialization in Large Diameter) |
| LSAW / Welded Pipes | Custom sizes up to 48" and above |
Standard Weight & Wall Thickness for SS 304L Pipes
This table provides a reference for the most common wall thickness schedules used in pressure-containing applications and structural engineering.
| NPS (Inches) | Outside Diameter (mm) | SCH 10 (mm) | SCH 40 (mm) | SCH 80 (mm) | SCH 160 (mm) |
| 1/2" | 21.34 | 2.11 | 2.77 | 3.73 | 4.78 |
| 1" | 33.40 | 2.77 | 3.38 | 4.55 | 6.35 |
| 2" | 60.33 | 2.77 | 3.91 | 5.54 | 8.74 |
| 4" | 114.30 | 3.05 | 6.02 | 8.56 | 13.49 |
| 8" | 219.08 | 3.76 | 8.18 | 12.70 | 23.01 |
Is 304L Stainless Steel Good Quality?
Yes, 304L has less carbon content than the normal stainless steel pipe 304, which reduces the level of carbide that can be sent out during welding. This implies that it can be employed in its as-welded form under highly corrosive condition. In comparison, standard 304 stainless steel would corrode easily at the weld joint. Here are some advantages of 304L.
The Type 304L that has less than 0.03 percent carbon can be used as-welded without intergranular corrosion. It has a content of eight to ten percent nickel and therefore, it is resistant to oxidation and stress corrosion cracking in high temperatures. An increase in nickel content implies that it is applicable in the deep drawn applications. It is significant in case two types of stainless steel are to be compared. It should be a different but similar percentage.
Corrosion Resistance of 304L Stainless Steel
Type 304L is a T-300 series stainless steel which is composed of no less than 18 percent chromium and 8 percent nickel. It is also common in the food business and it is simpler to weld than regular 304. Shaping and forming is also easier. 304L can be a better option in case you need a quick turnaround project. Overall, it is better to get a low-carbon variant of 304.
304L stainless steel is a material that is good at drawability and thus is easy to work and model into different shapes. It is ideal in food processing, making of milk, wine making, and brewing because no annealing is required to make the metals softer. Moreover, 304L stainless steel pipe is suitable in pipelines, fermentation vats and storage tanks. The material is non-corrosive and will resist the strenuous chemical cleaning agents.
Carbon is the biggest difference between 304L and 316L with 304L stainless steel pipe containing 0.08% of carbon and 321 containing 0.31%. This is the typical amount of carbon of any steel. Food processing can be done using both grades. 304L stainless steel pipe is better in machining. The cutting edge must be sharp to avoid overly hardening the work, and it must be so deep as not to chip. The coolant applied in the process should be in a large amount. Hardening 304 stainless steel pipes through heat treatment is not a possibility either. Nonetheless, it can be treated through solution treatment by rapid cooling followed by heating.
The 304L stainless steel pipe is cheaper and simpler to make in comparison with 316. Some of the typical uses of 304 grade stainless steel are wheel covers, electrical enclosures, and other uses of steel pipes. It is a very attractive component in the equipment and site furnishing of the food and beverage industry due to its high corrosion resistance as well as its manufacturability. It is also resistant to a lot of oxidizing chemicals such as other acids and nitric acid.
The variations between 304L and 316L stainless steel are the variation between a corrosion-resistant material and a material that can be welded. The latter can be better applied to the products that are exposed to a marine environment and are exposed to a salt-corrosive environment. No matter what grade you would like, 304L stainless steel is an affordable and useful option in several applications.
304L Stainless Steel Pipe Price List 2025
Note: Prices are subject to change based on market fluctuations. Contact us for the latest quote.
| Product Description | Price (USD/Kg) | Price (INR/Kg) |
| SS 304L Seamless Pipe | $3.80 - $4.80 | ?300 - ?380 |
| SS 304L Welded / ERW Pipe | $3.00 - $4.00 | ?240 - ?320 |
| SS 304L Square Pipe | $3.20 - $4.20 | ?260 - ?340 |
| ASTM A312 TP304L Round Pipe | $3.50 - $4.50 | ?280 - ?360 |
Applications of SS 304L Pipe in the Industry
The SS 304L Stainless Steel Pipe is a low-carbon, and a modified crafter of the 304 grade to be specially designed to optimize its welding-intensive application where intergranular corrosion is an issue. Metinox Overseas supplies the UNS S30403 Pipes to the companies which require high level of corrosion resistance, weldability and structural integrity over a long period of operation in both at cryogenic and in high temperature conditions.
Chemical & Petrochemical Industry
Reactors, distillation columns and transfer lines, which contain organic acids and oxidizing agents utilize SS 304L pipes. Low carbon eliminates welding sensitization and confirms longevity in chloride welding such as in brine and caustic dealings.
Food & Beverage Processing
The electropolished finishes of Sanitary 304L pipes are in sanitation standards such as FDA and 3-A that are used in the production of dairy, breweries, and juices. Non-porous surfaces prevent bacteria and promote the CIP/SIP cleaning of pasteurization and bottling systems.
Pharmaceutical & Biotechnology
SS 304L Stainless Steel Pipes are used in manufacturing of API, bioreactors, and WFI. Intergranular corrosion Resistance to ensure sterile integrity in cGMP, ASME BPE, and USP Class VI standards of pharmaceutical processing.
Oil & Gas Upstream & Midstream
SS 304L Stainless Steel Pipes are used in offshore platforms in instrument air, utility water and chemical injection lines. Applicable in the treatment of produced water and gas processing under non sour service conditions with a limit of H2S and CO2 presence.
Cryogenic Applications
SS 304L Stainless Steel Pipe has hardness at -269�C at the liquid nitrogen, oxygen and LNG systems. They find applications in cryogenic tanks, vacuum insulated piping and air separation units in industrial gas stations and aerospace ground support systems.
Architectural & Structural
SS 304L Stainless Steel Pipes are used in handrails, cladding of facades, and decorative columns are made of square and rectangular pipes. It is aesthetically pleasing and resistant to corrosion and is suitable in shopping malls, airports, hospitals and commercial building interiors.
Marine and Coastal Environment
SS 304L Stainless Steel Pipes are used in applications above waterline such as fresh water plumbing, HVAC ducting, and galley equipments in ships. Applicable to coastal buildings that are open to salt spray but not in the presence of the seawater.
Water & Wastewater Treatment
Applications in municipal water supply, ozone chambers, UV purification and membrane purification. Chlorinated water, and in hypochlorite, in drinking water structure and swimming pool circulation mechanisms, resistant.
Pulp & Paper Industry
SS 304L Stainless Steel Pipe is used in pulp digesters, chemical recovery and in bleaching plants. Resists chlorine dioxide, sodium hypochlorite or caustic solution and abrasive slurry flow of paper machine systems.
Automotive & Transportation
SS 304L Stainless Steel Pipe are used in exhaust manifolds, fuel injection rails and coolant systems where numerous degrees of oxidation up to 800�C are required. It is also used in water systems of railways, bus air conditioning lines and pneumatic systems of light rails.
Why Choose SS 304L Pipes from Metinox Overseas?
Metinox Overseas has strived to become a brand that everyone trusts in the world stainless steel supply chain and has a name in quality, reliability, and customer-focused services, which have made it deliver ASTM A312 TP304L Pipes to more than 50 countries worldwide. Excellence is a commitment that is realized in all the areas of the supply chain, including the procurement of raw materials and eventual delivery.
- Manufacturing, Certified ISO 9001:2015: All the pipes are made in ISO-certified mills which have rotary piercing and high-frequency ERW welding. The process control provides uniform quality of all sizes and schedules under heat treatment specifications.
- Large Stockpile and Rapid shipping: Ready inventory warehouses in SCH 5S to XXS, 1/8th to 36 NB. Same-day delivery of regular sizes will remove the lengthy lead times and avoid delays in projects of urgency.
- 100 percent Material Testing/ Traceability: Each of the batches is subjected to the PMI, hydrostatic pressure, ultrasonic, and eddy current testing. Heat mark, grade, and size are laser marked so that full traceability is achieved. Intergranular corrosion testing undertaken on ASTM A262.
- Third-Party Support to Inspection: We are open to TUV, SGS, Bureau Veritas, Lloyds, DNV GL and ABS inspection. There will be a documentation of EN 10204 3.1B MTC, raw material certificates, heat treatment charts, and lab reports done by NABL.
- Competitive and open pricing: Direct sourcing of Jindal stainless and foreign mills removes the markups of intermediaries. Clearly stated prices with specific quotations that de-materialize the material, processing, testing, packaging and logistics costs.
- Personalized Cutting, Beveling and Value-Added Services: A high level of customization, cutting to +-1mm accuracy, beveling (30�/37.5�), threading (NPT/BSP), Victaulic grooving, electropolishing, certification of hydrostatic tests, and protective end caps to facilitate safe transportation is offered.
- Global Export Expertise: Several years experience in exports dealing with multimodal transport, containers loading, fumigation certificates, importation and exportation documents (invoice, packing list, CoO) and freight forwarding to find the best route.
- Technical Support/Suggestions on material selection: Metallurgical engineers offer the selection of the material grade, corrosion evaluation, pressure-temperature analysis, ASME B31.3 compliance analysis, recommendation of welding procedure, and post-installation inspection.
- Long-Term Customer Relationships: The after sales services would consist of performance follow up, future order documentation, inventory management on behalf of frequent customers and active communication regarding the market condition, price and new product launches.
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Choose Metinox Overseas � Your Reliable SS 304L Pipe Manufacturer & Exporter.
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SS 304L Pipe Delivery Time & CIF Pricing by Country
Metinox Overseas operates a streamlined export logistics system designed to deliver ASTM A312 TP304L Pipes to global destinations with predictable transit times and cost-effective shipping solutions. We offer flexible INCOTERMS including CIF (Cost, Insurance and Freight), FOB Mumbai/JNPT (Free on Board), CFR (Cost and Freight), DDP (Delivered Duty Paid), and DAP (Delivered at Place) to accommodate diverse purchasing requirements and budget constraints.
| Destination Region | Major Ports / Cities | Estimated Delivery Time | Typical CIF Terms |
| Middle East (GCC) | Dubai (Jebel Ali), Dammam (King Abdul Aziz Port), Doha (Hamad Port), Muscat (Sultan Qaboos Port), Kuwait (Shuwaikh Port), Bahrain (Khalifa Bin Salman Port) | 7 - 12 Days | CIF Dubai / CIF Dammam / CIF Doha / CIF Muscat |
| Europe | Rotterdam (Netherlands), Hamburg (Germany), Antwerp (Belgium), Southampton (UK), Felixstowe (UK), Genoa (Italy), Barcelona (Spain), Le Havre (France) | 22 - 28 Days | CIF Rotterdam / CIF Hamburg / CIF Antwerp |
| USA & Canada | Houston TX (Port of Houston), New York NY (Port of NY/NJ), Los Angeles CA (Port of LA), Long Beach CA, Savannah GA, Vancouver BC, Montreal QC | 28 - 35 Days | CIF Houston / CIF New York / CIF Los Angeles / CIF Vancouver |
| Latin America (LATAM) | Santos (Brazil), Paranagu� (Brazil), Veracruz (Mexico), Manzanillo (Mexico), Buenos Aires (Argentina), Callao (Peru), Cartagena (Colombia), Valpara�so (Chile) | 32 - 40 Days | CIF Santos / CIF Veracruz / CIF Buenos Aires / CIF Callao |
| Southeast Asia | Singapore (Port of Singapore), Port Klang (Malaysia), Laem Chabang (Thailand), Manila (Philippines), Jakarta (Tanjung Priok), Ho Chi Minh City (Vietnam) | 12 - 18 Days | CIF Singapore / CIF Port Klang / CIF Manila |
| Africa | Lagos (Apapa Port, Tin Can Island), Durban (South Africa), Mombasa (Kenya), Dar es Salaam (Tanzania), Alexandria (Egypt), Casablanca (Morocco), Port Said (Egypt) | 18 - 25 Days | CIF Lagos / CIF Durban / CIF Mombasa |
| East Asia | Shanghai (China), Busan (South Korea), Tokyo/Yokohama (Japan), Hong Kong, Taipei (Taiwan) | 15 - 22 Days | CIF Shanghai / CIF Busan / CIF Hong Kong |
| Oceania | Sydney (Australia), Melbourne (Australia), Brisbane (Australia), Auckland (New Zealand), Perth (Australia) | 20 - 28 Days | CIF Sydney / CIF Melbourne / CIF Auckland |
Important Notes on Delivery & Pricing:
Delivery times are estimates based on normal shipping line schedules and are subject to variations due to port congestion, customs clearance procedures, transshipment requirements, weather conditions, and peak season surcharges during Chinese New Year and Ramadan periods.
CIF pricing includes material cost, export packaging (wooden crates/cases for pipe protection, steel strapping, rust preventive coating, desiccants), freight charges to named destination port, and marine insurance covering 110% of CIF value under ICC(A) terms.
Other Types of Stainless Steel 304L Pipes
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Supplier and Exporter of Stainless Steel 304L Pipes in Cities Like
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Supplier and Exporter of Stainless Steel 304L Pipes in Countries Like
Lithuania, Hungary, Mexico, Spain, United Arab Emirates, Nigeria, France, Belarus, Netherlands, Taiwan, New Zealand, Indonesia, Gabon, Malaysia, Afghanistan, Tibet, Estonia, Denmark, Kuwait, Oman, Lebanon, Switzerland, Trinidad & Tobago, Tunisia, Pakistan, Colombia, Bhutan, Vietnam, Austria, Belgium, Ghana, Kenya, Portugal, Jordan, Russia, Ukraine, Algeria, Argentina, Brazil, Libya, Singapore, Namibia, United Kingdom, Zimbabwe, Azerbaijan, Sweden, Finland, Macau, Poland, Mexico, Czech Republic, Romania, Canada, Greece, Slovakia, Kazakhstan, Chile, Iran, Yemen, Nigeria, Venezuela, Norway, Bahrain, Iran, Bulgaria, Turkey, South Korea, Bangladesh, Japan, Mongolia, India, Philippines, Australia, Nepal, Ireland, Puerto Rico, Ecuador, Hong Kong, Chile, Egypt, Israel, Peru, South Africa, Qatar, Iraq, Saudi Arabia, China, Morocco, Serbia, Thailand, Sri Lanka, Germany, Poland, Croatia, Costa Rica, Bolivia, Italy, Angola, Gambia, United States.
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Frequently Asked Questions (FAQ)
SS 304 contains carbon max 0.08% carbon 304L contains carbon max 0.03% carbon. The decreased carbon in 304L lowers the formation of carbide during welding, which suppresses the intergranular corrosion. 304L is better in the welded fabrication that does not undergo multiple welds annealing.
304L is not very resistant to seawater as it has pitting caused by chlorides. Best used in rare saltwater splash or coastal use but not consistent use. Improve to 316L or duplex 2205 where in direct seawater contact application.
The austenitic structure is the reason why annealed 304L is non-magnetic. Cold working (bending, forming) brings about partial transformation to martensite to the extent that it is slightly magnetic. It does not mean low quality it is typical of austenitic grades.
In oxidizing conditions: continuous use to 800�C and intermittent use to 870�C. Sensitization Not to be subjected to higher temperature (425-815�C) in the long-term. Is tough at the lowest LNG/LOX service temperatures, even -269�C cryogenic temperatures.
Yes, very good TIG and MIG as well as stick and SAW Welding. Low carbon reduces the formation of carbide thus as-welded can be used without PWHT. PEER308L filler rods are used, interpass temperature is to remain under 150�C, and back purging.
Yes, shipments are accompanied by EN 10204 3.1B MTC with the documents of chemical composition, mechanical properties, dimensions, heat treatment and heat number. Additional tests are hydrostatic test, ultrasonic inspection and ASTM A262 IGC test.
Yes, the pipes comply with ASME B31.3, ASME B31.1, PED 2014/68/EU, NACE MR0175/ISO 15156 and API. We also offer manufacturer proclaims, CE marking of PED compliance and liaising with notified bodies in EU certifications.
Warehouse in covered and well-ventilated warehouses without being exposed to weather. Wooden dunnage should be used to avoid contact of carbon steel. Keep off ground raised with end caps. Should be stored longer than 6 months, then use rust preventive coating or VCI paper.
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