304H Stainless Steel Pipe Manufacturer & Supplier
Metinox Overseas is a renowned manufacturer, supplier, exporter as well as a stockist of high grade SS 304H Seamless Pipes in the international market. Stainless steel 304H alloy is a high-carbon alloy of the common 304 grade austenitic stainless-steel specifically designed with controlled carbon content (0.04-0.10) in order to provide superior high-temperature strength, increase in creep resistance, and better structural stability in a long-life service in high-temperature conditions. The choice SS 304H is to be used in the tasks that demand the steady use of temperatures ranging 425�C to 815�C wherein the carbide precipitation strengthening effects offer severe performance benefits over conventional low-carbon grades. It is a chromium-nickel austenitic alloy exhibiting very high levels of resistance to oxidation, sulfidation and carburization at high temperatures and demonstrates a good formability, weldability and corrosion resistance in a multiplicity of industrial service conditions. The optimum carbon content provides improved grain boundary strength to the existence of controlled carbide precipitation, thereby suitable in the high temperature process equipment, pressure vessels, boiler components, heat exchangers, superheater tubes, and petrochemical processing applications where the mechanical integrity of thermal loading plays the key role.
The production of our ASTM A312 TP304H Seamless Pipes is based on the high-grade alloy, high technology production and the modern equipment in strict professional control. Production techniques are based on the internationally established standards and quality procedures in order to provide the similarity of the performance, sizes, and high durability. All SS 304H seamless pipes, whether Positive Material Identification (PMI), Intergranular Corrosion (IGC) testing, mechanical and chemical analysis, macro-micro examination, hardness testing, flattening tests, flaring tests, and high-temperature tensile tests are subjected to comprehensive quality assurance tests. Each shipment has its full documentation comprising of Mill Test Certificate and 100% radiography of tests and fumigation certificates and commercial invoice and packing lists and material traceability records and material test report, heat treatment certificate, and performance guarantee letter, which ensures total compliance, transparency and traceability to our esteemed clients in the critical industries around the globe.
Table of Contents
- 304H Stainless Steel Pipe Manufacturer & Supplier
- Stainless Steel 304H Pipe Specifications
- Stainless Steel UNS S30409 Pipes Equivalent Grades
- 304H Stainless Steel Pipes Chemical Composition
- ASME SA312 SS TP304H Pipes Mechanical Properties
- 304H Stainless Steel Pipe Price List
- Applications & Uses of SS 304H Pipe
- Why Choose SS 304H Pipes from Metinox Overseas?
- SS 304H Pipe Delivery Time & CIF Pricing by Country
- Other Types of Stainless Steel 304H Pipes
- Popular Locations Where We Supply Stainless Steel 304H Pipes
- People Search 304H Stainless Steel Pipe For
- Supplier and Exporter of SS 304H Pipes in Cities
- Supplier and Exporter of SS 304H Pipes in Countries
- Frequently Asked Questions (FAQ)
Stainless Steel 304H Pipe Specifications
Our SS 304H pipes are manufactured under stringent quality controls to meet international piping standards for high-pressure and high-temperature environments.
| 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 |
| Outside Finish | 2B, No.4, No.1, No.8 Mirror Finish, Polished |
| Delivery Condition | Annealed and Pickled, Polished, Bright Annealed, Cold Drawn |
Stainless Steel UNS S30409 Pipes Equivalent Grades
The SS 304H grade is cross-referenced with various international systems to ensure compatibility with global engineering designs.
| STANDARD | UNS | WERKSTOFF NR. | EN |
| SS 304H | S30409 | 1.4948 | X6CrNi18-9 |
304H Stainless Steel Pipes Chemical Composition
The chemical profile of UNS S30409 is defined by its higher carbon range, which is essential for maintaining mechanical integrity at extreme temperatures.
| Grade | C | Mn (max) | Si (max) | P (max) | S (max) | Cr | Ni |
| SS 304H | 0.04 � 0.10% | 2.0% | 0.75% | 0.045% | 0.03% | 18 � 20% | 8 � 10.5% |
ASME SA312 SS TP304H Pipes Mechanical Properties
Our SS 304H pipes offer superior tensile and yield strength, ensuring they can withstand significant thermal stress and internal pressure.
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (%) min | Hardness (Rockwell B) max | Hardness (Brinell) max |
| SS 304H | 515 | 205 | 40 | 92 | 201 |
304H Stainless Steel Pipe Price List
Metinox Overseas provides transparent pricing for SS 304H, reflecting its high-grade composition and specialized high-temperature capabilities.
Note: Prices are subject to change based on market fluctuations. Contact us for the latest quote.
| Product Description | Price in US ($) / Ton | Price in Indian (INR) / Kg |
| SS 304H Seamless Pipe Price | $350 - $725 | ?230 |
| 304H SS Welded Pipe Price | $620 - $830 | ?200 |
| ASTM A312 TP304H Pipe Price | $430 - $650 | ?215 |
| Jindal SS 304H Square Pipe Price | $555 - $845 | ?215 |
| SS 304H Pipe Price in Delhi | $355 - $735 | ?220 |
| Jindal Stainless Steel 304H Price List | $620 - $840 | ?270 |
| Stainless Steel 304H Price Per Kg (India) | $690 - $820 | ?150 |
| 304H Stainless Steel Hollow Pipe Price | $490 - $690 | ?200 |
Applications & Uses of SS 304H Pipe
Due to its robust mechanical properties at elevated temperatures, Metinox Overseas provides 304H pipes for several critical industries:
Food Processing
Seamless pipes, 304H (usually), find application in the food processing industry as these pipes are hygienic and also they do not corrode easily. The food products flowed by the pipes include milk, beer, and juices. The pipes are smooth thus preventing the growth of bacteria and other microorganisms.
Chemical Processing
In chemical manufacturing, high temperature and pressure chemicals and acids are carried by seamless pipes, 304H. The pipes are very corrosive and hence are suitable in the handling of corrosive chemicals.
Oil and Gas Industry
Oil and gas companies depend heavily on stainless steel seamless pipes that are 304H because it is very resistant to corrosion and heat. The pipes are made to carry heavy temperatures and pressures of oil and gas and are crack and leak resistant.
Architectural Applications
Stainless steel 304H seamless pipes have an aesthetic value that qualifies them as ideal to use in the architectural design of the building, e.g. handrails and guardrails. The pipes are very resistant to corrosion and have the ability to resist the extreme weather conditions.
Pharmaceutical Industry
Hygiene and cleanliness are needed in high levels in the pharmaceutical industry. Pharmaceutical products such as vaccines and medications are made using SS 304H seamless pipes. The pipes are resistant to corrosion and hence, they are applicable in transporting the chemicals used in the manufacturing process.
Marine Applications
The 304H Stainless steel seamless pipes offer high resistance to corrosion, and thus it is suitable to use in the marine industry. Water, oil and other liquids are carried through the pipes of a ship and offshore rig. They are able to withstand harsh weather conditions and exposure to sea water.
Automotive Industry
The automobile sector is highly demanding when it comes to materials that are used in the production process. Manufacture of exhaust systems is usually done using stainless steel 304H seamless pipes that are corrosion resistant. Fuel and brake lines in the cars and trucks are also conducted through the pipes.
Why Choose SS 304H Pipes from Metinox Overseas?
Metinox Overseas has proven itself as a brand of high-temperature stainless steel supply chain around the world. Our specialty is the supply of ASTM A312 TP304H Pipes to more than 50 countries, which is necessary in the infrastructure of power generation, oil refining, and chemical processing.
- Excellence in manufacturing 304H: Our 304H pipes are produced in ISO-approved mills which operate with rotary piercing to provide pipes with smooth edges and with the high-frequency ERW welding to welded pipes.
- Controlled solution annealing: We assure a special inventory of TP304H pipes in SCH 10S up to SCH XXS schedules.
- Tight Control of Testing and Traceability: Every batch is thoroughly checked as well as Positive Material Identification (PMI), hydrostatic pressure test, and ultrasonic inspection. As a way of supporting high-temperature standards, we provide Intergranular Corrosion (IGC) tests according to ASTM A262 and have creep-rupture strength data on hand on demand.
- Third-Party Inspection Support: We are open to inspection by TUV, SGS, Bureau Veritas, Lloyds and DNV GL.
- Direct sourcing and Competitive pricing: Direct sourcing of EN 10204 3.1 MTC and NABL approved lab reports as well as raw material heat charts help us to avoid middleman markup.
- 2026-pricing Model: With open, de-materialized quotes that include material, processing, and logistics, we are able to offer high-precision cutting (within 1mm), specialized beveling (30�/37.5�) to heavy-wall welding, NPT/BSP threading and electropolishing to special heat-transfer surfaces.
- Value-Added Customization: Our engineers have years of experience in exporting, and can offer high-precision cutting and beveling.
- 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.
Looking for High-Quality SS 304H Pipes?
Choose Metinox Overseas � Your Reliable SS 304H Pipe Manufacturer & Exporter.
Let us support your high-temperature projects with quality, precision, and performance.
SS 304H Pipe Delivery Time & CIF Pricing by Country
Metinox Overseas has an efficient export logistical system, which will be used to deliver the ASTM A312 TP304H Pipes to the overseas markets at predictable transit time and less expensive shipping methods. We understand that the UNS S30409 Pipes have a high-potential of being a critical-path item during power plant shutdowns and boiler repairs, so we are very keen on expedited handling and documentation.
| 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 304H Pipes
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Supplier and Exporter of Stainless Steel 304H Pipes in Cities Like
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Supplier and Exporter of Stainless Steel 304H Pipes in Countries Like
Bangladesh, Venezuela, Nigeria, Jordan, Poland, Denmark, Kuwait, Hong Kong, Lebanon, Spain, Yemen, Romania, Indonesia, Switzerland, Afghanistan, Germany, South Africa, Japan, Puerto Rico, India, Slovakia, Colombia, Thailand, Gabon, Iran, Taiwan, Portugal, Serbia, Ireland, France, Finland, Philippines, Egypt, Morocco, Argentina, Lithuania, Austria, Chile, Hungary, United Kingdom, Belgium, Czech Republic, Nigeria, Chile, Bhutan, Oman, Costa Rica, Saudi Arabia, Malaysia, Sri Lanka, Gambia, Australia, Mexico, Kazakhstan, Mongolia, New Zealand, Angola, Norway, Brazil, Zimbabwe, Algeria, Nepal, Israel, United States, Russia, Kenya, Netherlands, Iran, Ghana, Bolivia, Ukraine, Vietnam, Sweden, United Arab Emirates, Bulgaria, Italy, Namibia, Trinidad & Tobago, Tunisia, Greece, Croatia, Poland, Libya, Belarus, Pakistan, Azerbaijan, Singapore, China, South Korea, Canada, Peru, Turkey, Qatar, Macau, Iraq, Mexico, Ecuador, Tibet, Estonia, Bahrain.
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Frequently Asked Questions (FAQ)
Whereas a typical SS 304 contains a maximum amount of 0.08% carbon, SS 304H (UNS S30409) is especially produced with a specified amount of 0.04 to 0.10%. This is not accidental; it offers a much greater tensile and creep strength at high temperatures above 500�C, where plain 304 would lose its structural integrity.
ASTM A312 TP304H pipes are designed to operate at high temperature, usually between 425�C and 815�C or 800�F and 1500�F. The range of the alloy has the carbide precipitation of the alloy give the alloy the required grain boundary strength to withstand the deformation and mechanical failure under extended thermal loading.
Superheaters and boilers are equipment used in power plants and refineries and subjected to extreme heat. Pipes made of Stainless Steel 304H are more likely to be better creep rupture strength (capability to endure gradual break under cylindrical pressure and heat) in comparison with 304 and 304L. This guarantees higher service life and enhanced safety of the pressurized steam and chemical systems.
No, as a rule. Although SS 304L is a good material used in corrosion resistance and sensitization prevention in the welding process, it contains low carbon content. This renders it highly inferior to 304H in hot temperatures. Running 304L through a system that is built to use 304H may result in the premature sagging of pipes or structural failure of the system because of the absence of creep strength.
To guarantee the reliability of the product in the critical environment, we conduct a set of tests such as: PMI (Positive Material Identification) to confirm the compliance with the minimum percentage of carbon requirement 0.04%; IGC (Intergranular Corrosion) Test per ASTM A262; High-Temperature Tensile Testing to check the compliance of mechanical property; and Hydrostatic and Ultrasonic Testing to ensure defect-free and leak-free products.
Yes, SS 304H pipes are good to weld with most standard fusion techniques. Nonetheless, due to the content of carbon, some special types of welding are usually suggested to preserve the high-temperature characteristics of the joint. Our metallurgical engineers will be able to give you some particular recommendation of welding procedures based on your project requirements.
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