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Girgaon, Mumbai - 400004
Stainless Steel 304H Seamless Pipes
Trusted Global Manufacturer & Stockist of Stainless Steel 304H Seamless Pipes
Kamal Steels is a leading Stainless Steel 304H Seamless Pipe Manufacturer and Stockist in India, offering premium quality ASTM A312 TP304H Seamless Pipes for high-temperature industrial, commercial and engineering applications worldwide. Since 1984, we have been supplying SS 304H Seamless Pipes and Tubes in a wide range of sizes, wall thicknesses and schedules to serve the requirements of power generation, petrochemical, oil & gas, refinery, chemical processing, heat exchanger and boiler industries.
Manufactured from high-quality Stainless Steel 304H (UNS S30409 / WNR 1.4948), our seamless pipes are known for their excellent high-temperature strength, oxidation resistance, superior creep resistance and reliable performance in elevated temperature environments. As a trusted SS 304H Seamless Pipe Stockist and Exporter in India, we maintain ready stock for immediate delivery across domestic and international markets.
Table of Contents
- Get Quote / Best Price for Stainless Steel 304H Seamless Pipes
- Certifications & Compliance
- Why Stainless Steel 304H Seamless Pipes?
- SS 304H Pipe Price in India
- SS 304H Pipe Size Chart
- Why Choose Kamal Steels?
- ASTM A312 TP304H Pipe Specifications
- Chemical Composition of SS 304H Seamless Pipes
- Equivalent Grades of Stainless Steel 304H Pipes
- Mechanical Properties of SS 304H Seamless Pipes
- Available Grades of Stainless Steel 304H Seamless Pipes
- Stainless Steel 304H Seamless Pipe Manufacturing Process
- Advantages of SS 304H Seamless Pipes
- SS 304H Pipe vs SS 304 Pipe
- Applications of SS 304H Seamless Pipes
- Industries We Serve
- Frequently Asked Questions
Get Quote / Best Price for Stainless Steel 304H Seamless Pipes
- Instant Quotation Support
- WhatsApp Inquiry Available
- ASTM A312 TP304H Seamless Pipes in Stock
- Bulk Order & Project Pricing
- Mill Test Certificate (MTC) Available
- Third Party Inspection (TPI) Support
- Ready Stock Dispatch Worldwide
- Custom Length Cutting Available
Certifications & Compliance
Kamal Steels follows strict quality management systems and international manufacturing standards to ensure the consistent quality of Stainless Steel 304L Seamless Pipes supplied to domestic and global customers. Our products are supplied with complete documentation, traceability and inspection support for critical industrial applications.
- ISO 9001:2015 Certified Company
- ISO 14001 Certified
- ISO 45001 Certified
- MSME Registered Company
- IEC Export Certification
- GST Registered Business
- EN 10204 3.1 Certification Available
- Third Party Inspection (TPI) Support
Why Stainless Steel 304H Seamless Pipes?
Stainless Steel 304H Seamless Pipes are widely used in high-temperature applications due to their enhanced carbon content, excellent oxidation resistance and superior creep strength. Grade 304H is specifically designed for elevated temperature service, making it an ideal choice for industries operating under continuous heat and pressure conditions.
ASTM A312 TP304H Seamless Pipes provide outstanding mechanical strength, thermal stability and long-term durability in demanding environments. These pipes are extensively used in boilers, heat exchangers, power plants, petrochemical facilities, refineries and chemical processing industries where high-temperature performance and reliability are essential.
- Excellent High-Temperature Strength
- Superior Creep Resistance
- Outstanding Oxidation Resistance
- High Mechanical Strength and Durability
- Suitable for Continuous Elevated Temperature Service
- Good Fabrication and Weldability
- Reliable Performance in Pressure Applications
- Long Service Life with Low Maintenance
SS 304H Pipe Price in India
The price of SS 304H Seamless Pipes in India depends on factors such as pipe size, wall thickness, schedule, quantity, manufacturing standard and prevailing stainless steel market rates. Stainless Steel 304H is a high-carbon austenitic stainless steel grade specifically developed for high-temperature applications requiring enhanced strength and creep resistance.
Kamal Steels maintains ready stock of ASTM A312 TP304H Seamless Pipes in various sizes and schedules, allowing us to offer competitive pricing, fast delivery and reliable supply for domestic and international projects.
Stainless Steel 304H Pipe Size Chart
Why Choose Kamal Steels?
- Since 1984 Industry Experience
- Large Ready Stock of ASTM A312 TP304H Seamless Pipes
- Competitive Pricing for Bulk Orders
- Mill Test Certificates (MTC) Provided
- Third Party Inspection Support
- Worldwide Export Supply
- Custom Length Cutting Available
- Fast Delivery and Technical Support
ASTM A312 TP304H Pipe Specifications
| Specification | Details |
|---|---|
| Product | Stainless Steel 304H Seamless Pipe |
| Grade | ASTM A312 TP304H |
| Material | Stainless Steel 304H |
| UNS Number | S30409 |
| WNR Number | 1.4948 |
| Pipe Type | Seamless |
| Size Range | 1/8" NB to 24" NB |
| Wall Thickness | SCH 5 to SCH XXS |
| Length | Single Random, Double Random, Cut Length |
| Standards | ASTM A312, ASME SA312 |
| Finish | Annealed & Pickled, Polished, Bright Annealed |
| Certification | EN 10204 3.1, MTC, TPI |
Chemical Composition of SS 304H Seamless Pipes
| Grade | Chromium (Cr) % | Nickel (Ni) % | Carbon (C) % |
|---|---|---|---|
| SS 304H | 18.0 – 20.0 | 8.0 – 11.0 | 0.04 – 0.10 |
Equivalent Grades of Stainless Steel 304H Pipes
| Standard | Grade |
|---|---|
| UNS | S30409 |
| WNR | 1.4948 |
| EN | X6CrNi18-10 |
| JIS | SUS 304H |
| BS | 304S51 |
Mechanical Properties of SS 304H Seamless Pipes
| Property | Value |
|---|---|
| Tensile Strength | 515 MPa Min |
| Yield Strength | 205 MPa Min |
| Elongation | 40% Min |
| Hardness | 92 HRB Max |
Available Grades of Stainless Steel 304H Seamless Pipes
Stainless Steel 304H Seamless Pipes are available in various grades and specifications for high-temperature applications including boilers, pressure vessels, heat exchangers, refineries, petrochemical plants and power generation facilities. Kamal Steels supplies ASTM and ASME standard SS 304H Seamless Pipes with complete certification, material traceability and quality assurance.
| Available Grades |
|---|
| Stainless Steel 304 Seamless Pipes |
| Stainless Steel 304H Seamless Pipes |
| ASTM A312 TP304 Seamless Pipes |
| ASTM A312 TP304H Seamless Pipes |
| UNS S30409 Seamless Pipes |
| WNR 1.4948 Seamless Pipes |
We maintain ready stock of ASTM A312 TP304H Stainless Steel Seamless Pipes in various sizes, schedules and lengths for immediate dispatch across India and international markets.
Need assistance selecting the right grade?
Contact our technical team for material selection guidance, stock availability, pricing and project-specific recommendations.
Stainless Steel 304H Seamless Pipe Manufacturing Process
Stainless Steel 304H Seamless Pipes are manufactured from high-quality high-carbon stainless steel billets using advanced hot piercing and rolling processes. Unlike welded pipes, seamless pipes are produced without any welding joints, providing superior high-temperature strength, pressure resistance, oxidation resistance and long-term reliability for critical industrial applications.
The SS 304H Seamless Pipe Manufacturing Process follows stringent quality control procedures to ensure dimensional accuracy, excellent surface finish and compliance with ASTM A312, ASME SA312 and international quality standards.
| Step | Manufacturing Process | Description |
|---|---|---|
| 1 | Raw Material Selection | Premium quality Stainless Steel 304H billets are selected according to ASTM specifications. |
| 2 | Billet Heating | Billets are heated to the required temperature for seamless pipe production. |
| 3 | Rotary Piercing | The heated billet is pierced to create a hollow shell. |
| 4 | Hot Rolling & Elongation | The hollow shell is elongated and rolled to achieve the required dimensions. |
| 5 | Sizing & Dimension Control | Pipe dimensions are precisely controlled to meet specified tolerances. |
| 6 | Solution Annealing | Heat treatment enhances high-temperature strength and oxidation resistance. |
| 7 | Testing & Inspection | Hydrostatic, PMI, dimensional and visual inspections are performed. |
| 8 | Marking, Packaging & Dispatch | Finished pipes are marked, packed and prepared for shipment worldwide. |
The manufacturing process ensures high dimensional accuracy, excellent surface finish, leak-free performance and compliance with ASTM A312 TP304H Seamless Pipe requirements for boilers, heat exchangers, refineries, petrochemical plants and power generation applications.
Advantages of Stainless Steel 304H Seamless Pipes
Stainless Steel 304H Seamless Pipes are widely used across industrial, commercial and engineering applications due to their excellent high-temperature strength, oxidation resistance and long-term reliability. Manufactured without welding joints, these pipes offer enhanced pressure handling capability and superior performance in elevated temperature environments.
ASTM A312 TP304H Seamless Pipes are suitable for boilers, heat exchangers, power generation plants, refineries, petrochemical facilities and industrial piping systems where high-temperature service conditions are critical.
| Key Advantage | Benefit |
|---|---|
| High Temperature Strength | Maintains strength and structural stability at elevated temperatures. |
| Excellent Oxidation Resistance | Provides reliable performance in high-temperature environments. |
| Enhanced Creep Resistance | Suitable for continuous high-temperature service applications. |
| Leak-Free Seamless Construction | No welded joints reduce the risk of leakage and structural weaknesses. |
| High Strength & Durability | Suitable for high-pressure and demanding industrial applications. |
| Excellent Mechanical Properties | Offers superior performance under thermal stress. |
| Good Corrosion Resistance | Performs reliably in industrial processing environments. |
| Long Service Life | Reduces replacement frequency and maintenance costs. |
| Ideal for Boilers & Heat Exchangers | Suitable for elevated temperature equipment and piping systems. |
| Cost-Effective High Temperature Solution | Provides long-term value in demanding thermal applications. |
SS 304H Pipe vs SS 304 Pipe
Stainless Steel 304H is the high-carbon version of SS 304 specifically designed for elevated temperature service. The higher carbon content improves creep strength and high-temperature performance, making SS 304H suitable for boilers, pressure vessels, heat exchangers and refinery applications.
| Property | SS 304H Pipe | SS 304 Pipe |
|---|---|---|
| Carbon Content | 0.04–0.10% | 0.08% Max |
| High Temperature Strength | Superior | Good |
| Creep Resistance | Excellent | Moderate |
| Pressure Vessel Service | Highly Suitable | Suitable |
| Corrosion Resistance | Excellent | Excellent |
| Weldability | Very Good | Excellent |
| Operating Temperature | High Temperature Applications | General Applications |
| Typical Applications | Boilers & Heat Exchangers | General Industrial Piping |
SS 304H is preferred where higher strength and creep resistance are required at elevated temperatures, while SS 304 is widely used for general-purpose corrosion-resistant applications.
Check Stock AvailabilitySS 304H Pipe Testing Methods
All Stainless Steel 304H Seamless Pipes supplied by Kamal Steels undergo comprehensive quality testing to ensure compliance with ASTM A312 TP304H, ASME SA312 TP304H and international quality standards.
| Testing Method | Purpose |
|---|---|
| Hydrostatic Testing | Verifies pressure resistance and leak integrity. |
| Ultrasonic Testing (UT) | Detects internal discontinuities and defects. |
| PMI Testing | Confirms chemical composition and grade. |
| Flattening Test | Evaluates mechanical properties and ductility. |
| Flaring Test | Tests forming and expansion capability. |
| Eddy Current Testing | Identifies surface imperfections. |
| Visual & Dimensional Inspection | Ensures dimensional accuracy and finish quality. |
| Third Party Inspection (TPI) | Provides independent quality certification. |
Mill Test Certificates (MTC), EN 10204 3.1 Certification and Third-Party Inspection Reports are available upon request with every Stainless Steel 304H Seamless Pipe supply.
Applications of SS 304H Seamless Pipes
Stainless Steel 304H Seamless Pipes are specifically designed for elevated temperature service where higher strength and creep resistance are required. ASTM A312 TP304H Seamless Pipes are widely used in boilers, pressure vessels, heat exchangers and high-temperature industrial processing systems.
| Application | Description |
|---|---|
| Boilers | Used in high-temperature steam and pressure applications. |
| Heat Exchangers | Provides excellent performance in heat transfer systems. |
| Power Generation Plants | Used in superheaters, reheaters and steam pipelines. |
| Petrochemical Industry | Suitable for high-temperature process piping systems. |
| Refineries | Used in thermal processing and refinery operations. |
| Pressure Vessels | Ideal for elevated temperature pressure containment systems. |
| Chemical Processing Plants | Handles corrosive and high-temperature process media. |
| Furnaces & Kilns | Suitable for thermal equipment and heat treatment units. |
| Industrial Process Plants | Provides long-term reliability in demanding environments. |
Industries We Serve
Kamal Steels supplies Stainless Steel 304H Seamless Pipes to industries requiring superior high-temperature strength, creep resistance and durability. Our ASTM A312 TP304H Pipes are trusted for critical thermal and pressure applications worldwide.
| Industry Sectors | Applications |
|---|---|
| Power Generation Industry | Boilers, steam systems and superheaters. |
| Petrochemical Industry | High-temperature process piping systems. |
| Refineries | Thermal processing and fluid transportation. |
| Chemical Industry | High-temperature chemical handling applications. |
| Heat Treatment Industry | Furnaces, kilns and thermal equipment. |
| Pressure Vessel Manufacturers | Pressure-retaining systems and components. |
| EPC Contractors | Engineering and industrial construction projects. |
| Industrial Manufacturing | Process plants and heavy engineering applications. |
| Energy Sector | Thermal power and process energy systems. |
| Industrial Fabrication | Custom high-temperature piping assemblies. |
Frequently Asked Questions
Stainless Steel 304H Pipe is a high-carbon version of SS 304 specifically designed for elevated temperature applications requiring improved creep strength, oxidation resistance and long-term durability.
304H stainless steel tubes are commonly used in boilers, heat exchangers, pressure vessels, refineries, petrochemical plants and power generation facilities operating at high temperatures.
SS 304H contains a higher carbon content than standard SS 304, providing improved high-temperature strength and creep resistance for elevated temperature service conditions.
304H stainless steel is used in piping systems because it offers superior strength, oxidation resistance and structural stability when exposed to prolonged high-temperature environments.
Yes, SS 304H is specifically developed for high-temperature applications and performs well in boilers, superheaters, steam lines and thermal processing systems.
Yes, 304H stainless steel pipes offer excellent resistance to corrosion and oxidation while maintaining strength at elevated temperatures.
Stainless Steel 304H Pipes are widely used in power generation, petrochemical, chemical processing, oil & gas, refinery, boiler manufacturing and heat exchanger industries.
The price of SS 304H pipe depends on pipe size, wall thickness, schedule, quantity and market conditions. Contact Kamal Steels for the latest SS 304H Pipe Price and stock availability.
Stainless Steel 304H typically contains 18–20% Chromium, 8–11% Nickel and a controlled carbon content of 0.04–0.10%, providing enhanced high-temperature strength and oxidation resistance.
SS 304H is better suited for elevated temperature applications requiring higher strength, while SS 304L is preferred for welded applications requiring lower carbon content and improved corrosion resistance.