Girgaon, Mumbai - 400004
Kamal Steels is a leading Manufacturer and Stockist of Stainless Steel 310H Welded Tubes, supplying premium-quality welded tubing solutions for boilers, superheaters, furnaces, heat exchangers, petrochemical plants, refineries, power generation facilities, and other high-temperature industrial applications. Manufactured from Stainless Steel 310H (UNS S31009 / WNR 1.4845), our welded tubes are produced in accordance with ASTM A249, ASTM A269, ASTM A270, ASTM A554, and ASME SA249 standards, ensuring exceptional dimensional accuracy, superior weld quality, outstanding oxidation resistance, and reliable mechanical performance. Stainless Steel 310H is the high-carbon version of SS 310, specifically developed for elevated-temperature service where enhanced creep strength and superior high-temperature mechanical properties are required.
Our Stainless Steel 310H Welded Tubes are manufactured using premium-quality stainless steel strips that are precision roll-formed and automatically welded using advanced TIG/ERW welding technology. The tubes are subsequently solution annealed, pickled, straightened, polished, and thoroughly inspected to achieve smooth surface finishes, excellent dimensional tolerances, and long service life. These welded tubes provide excellent resistance to oxidation, scaling, carburization, sulfidation, and thermal fatigue, making them ideal for boilers, superheaters, furnace components, radiant tubes, heat exchangers, pressure vessels, process piping, instrumentation systems, and other demanding industrial applications operating under elevated temperatures.
At Kamal Steels, we maintain a comprehensive inventory of ASTM A249 Stainless Steel 310H Welded Tubes in various outside diameters, wall thicknesses, schedules, surface finishes, and custom lengths to meet urgent domestic and international project requirements. Every tube undergoes rigorous quality inspections, including Positive Material Identification (PMI), Chemical Analysis, Mechanical Testing, Hydrostatic Testing, Eddy Current Testing, Dimensional Inspection, Surface Finish Inspection, and Visual Inspection before dispatch. With certified quality, competitive pricing, export-standard packaging, and prompt worldwide delivery, Kamal Steels has established itself as a trusted manufacturer and supplier of Stainless Steel 310H Welded Tubes for critical high-temperature industrial applications across global markets.

Stainless Steel 310H Welded Tubes are specially engineered for elevated-temperature applications requiring outstanding oxidation resistance, superior creep strength, and long-term mechanical stability. As the high-carbon version of Stainless Steel 310, Grade 310H provides enhanced strength and improved creep resistance at elevated temperatures while maintaining excellent corrosion resistance and weldability. Manufactured using premium-quality stainless steel strips and advanced TIG/ERW welding technology, these tubes provide excellent dimensional accuracy, smooth surface finishes, and dependable long-term performance in demanding industrial environments.
One of the major advantages of Stainless Steel 310H Welded Tubes is their ability to maintain mechanical strength and structural integrity during prolonged exposure to high temperatures. They exhibit excellent resistance to oxidation, scaling, carburization, sulfidation, and thermal fatigue, making them suitable for continuous service in industrial furnaces, boilers, superheaters, heat exchangers, petrochemical plants, oil refineries, power generation facilities, pressure vessels, and thermal processing equipment. Their excellent fabrication characteristics also allow easy forming, machining, and welding for various industrial applications.
At Kamal Steels, we manufacture and supply premium-quality ASTM A249 Stainless Steel 310H Welded Tubes produced according to international quality standards. Every welded tube undergoes comprehensive quality inspections, including Mechanical Testing, Chemical Analysis, Positive Material Identification (PMI), Hydrostatic Testing, Eddy Current Testing, Dimensional Inspection, Surface Finish Inspection, and Visual Inspection to ensure exceptional product quality, reliability, and complete customer satisfaction.
Kamal Steels supplies Stainless Steel 310H Welded Tubes in a comprehensive range of dimensions, schedules, surface finishes, and international specifications to meet the requirements of boilers, superheaters, furnaces, heat exchangers, petrochemical plants, refineries, power generation facilities, and other high-temperature industrial applications. Our welded tubes are manufactured with stringent quality control to ensure superior weld integrity, excellent dimensional accuracy, and dependable performance under elevated operating temperatures.
| Specifications | ASTM A249, ASTM A269, ASTM A270, ASTM A554, ASME SA249, ASME SA269 |
|---|---|
| Standard | ASTM, ASME, DIN, EN, ISO, JIS |
| Material Grade | Stainless Steel 310H (UNS S31009 / WNR 1.4845) |
| Outside Diameter | 6.35 mm to 219.10 mm (1/4" NB to 8" NB) |
| Wall Thickness | 0.5 mm to 12.7 mm (SCH 5S to SCH XXS) |
| Length | Single Random, Double Random, 6 Meter, 12 Meter & Custom Cut Lengths |
| Tube Form | Round, Square, Rectangular, Hydraulic, Instrumentation |
| Surface Finish | Annealed, Pickled, Bright Annealed (BA), Polished, Mirror Polish, Satin Finish |
| End Finish | Plain End, Beveled End, Threaded End |
| Manufacturing Process | TIG Welded, ERW Welded, Cold Drawn & Annealed |
| Testing | PMI, Hydrostatic Test, Eddy Current Test, Ultrasonic Test, Mechanical Test, Chemical Analysis |
| Certification | EN 10204 3.1 / 3.2 Mill Test Certificate (MTC) |
| Element | Composition (%) |
|---|---|
| Chromium (Cr) | 24.00 – 26.00 |
| Nickel (Ni) | 19.00 – 22.00 |
| Carbon (C) | 0.04 – 0.10 |
| Manganese (Mn) | 2.00 Max |
| Silicon (Si) | 1.50 Max |
| Phosphorus (P) | 0.045 Max |
| Sulfur (S) | 0.030 Max |
| Iron (Fe) | Balance |
| Property | Value |
|---|---|
| Tensile Strength | 515 MPa Minimum |
| Yield Strength | 205 MPa Minimum |
| Elongation | 40% Minimum |
| Hardness | 217 HB Max |
| Density | 7.90 g/cm³ |
| Standard | Equivalent Grade |
|---|---|
| UNS | S31009 |
| Werkstoff No. | 1.4845 |
| EN | X8CrNi25-21 |
| DIN | 1.4845 |
| JIS | SUS 310H |
Stainless Steel 310H Welded Tubes are extensively used in industries requiring exceptional high-temperature strength, superior creep resistance, and excellent oxidation resistance under continuous service conditions. The higher carbon content of Grade 310H enhances its mechanical properties at elevated temperatures, making it an ideal material for pressure equipment and thermal processing systems. These welded tubes offer outstanding durability, reliable performance, and extended service life in harsh industrial environments.
At Kamal Steels, every Stainless Steel 310H Welded Tube undergoes comprehensive inspection and testing to ensure compliance with ASTM, ASME, and customer specifications. Each welded tube is carefully inspected for chemical composition, weld integrity, dimensional accuracy, mechanical properties, surface quality, and overall product performance before dispatch.
Kamal Steels follows international export packaging standards to ensure that Stainless Steel 310H Welded Tubes reach customers safely without damage during transportation and storage. Tubes are protected with plastic end caps, securely bundled, wrapped with protective materials, and packed in fumigated wooden boxes, export-quality wooden crates, or pallets to prevent moisture, scratches, dents, and transit damage.
Each welded tube is permanently marked with the material grade, specification, size, schedule, heat number, manufacturer's identification, and batch details for complete material traceability. Every shipment is supplied with EN 10204 3.1/3.2 Mill Test Certificates, inspection reports, packing lists, commercial invoices, certificates of compliance, and third-party inspection certificates whenever requested, ensuring complete documentation for domestic and international industrial projects.
Kamal Steels is a trusted manufacturer, supplier, stockist, and exporter of Stainless Steel 310H Welded Tubes, supplying premium-quality stainless steel tubing solutions for boilers, superheaters, furnaces, heat exchangers, petrochemical plants, refineries, power generation facilities, and other high-temperature industrial applications. Manufactured according to ASTM and ASME standards, our welded tubes provide outstanding oxidation resistance, enhanced creep strength, superior weld quality, and dependable long-term performance under extreme operating temperatures.
We maintain a comprehensive inventory of ASTM A249 Stainless Steel 310H Welded Tubes in various outside diameters, wall thicknesses, schedules, surface finishes, and custom lengths to meet urgent domestic and international project requirements. Every welded tube undergoes comprehensive quality inspections, including Positive Material Identification (PMI), Chemical Analysis, Mechanical Testing, Hydrostatic Testing, Ultrasonic Testing, Eddy Current Testing, Dimensional Inspection, Surface Finish Inspection, and Visual Inspection to ensure complete compliance with international quality standards and customer specifications.
With decades of manufacturing expertise, ready stock availability, competitive pricing, certified quality, export-standard packaging, and a strong global supply network, Kamal Steels has become the preferred manufacturer and supplier of Stainless Steel 310H Welded Tubes across international markets. Our commitment to quality, technical support, prompt delivery, and complete documentation enables us to provide dependable stainless steel tubing solutions for the most demanding high-temperature industrial applications worldwide.
Stainless Steel 310H Welded Tubes are high-carbon chromium-nickel austenitic stainless steel tubes manufactured using advanced welding technology. They are specifically designed for elevated-temperature applications requiring improved creep strength and excellent oxidation resistance.
Our Stainless Steel 310H Welded Tubes are manufactured according to ASTM A249, ASTM A269, ASTM A270, ASTM A554, ASME SA249, and ASME SA269 standards.
These welded tubes offer excellent oxidation resistance, enhanced creep strength, superior high-temperature mechanical performance, outstanding scaling resistance, excellent weldability, and long service life.
They are widely used in industrial furnaces, boilers, superheaters, heat exchangers, petrochemical plants, oil refineries, pressure vessels, thermal processing equipment, and power generation facilities.
Stainless Steel 310H contains a higher carbon content than standard SS 310, providing improved creep strength and better mechanical stability during prolonged service at elevated temperatures.
Each tube undergoes PMI Testing, Chemical Analysis, Mechanical Testing, Hydrostatic Testing, Ultrasonic Testing (UT), Eddy Current Testing (ECT), Dimensional Inspection, Surface Finish Inspection, and Visual Inspection.
Yes. Every shipment includes EN 10204 3.1/3.2 Mill Test Certificates, inspection reports, complete material traceability, and third-party inspection certificates upon request.
Yes. Kamal Steels supplies Stainless Steel 310H Welded Tubes in various diameters, wall thicknesses, surface finishes, standard lengths, and custom-cut lengths according to customer specifications.
Yes. We export Stainless Steel 310H Welded Tubes worldwide with export-standard packaging, complete documentation, and timely international delivery.
Kamal Steels offers ASTM-compliant Stainless Steel 310H Welded Tubes with ready stock, certified quality, competitive pricing, stringent quality control, export-standard packaging, complete documentation, and dependable worldwide delivery for critical high-temperature industrial applications.