Girgaon, Mumbai - 400004
Kamal Steels is a leading Manufacturer and Stockist of Stainless Steel 904L Welded Tubes, supplying premium-quality welded tubing solutions for chemical processing plants, offshore platforms, marine industries, desalination plants, pharmaceutical facilities, heat exchangers, and other highly corrosive industrial applications. Manufactured from Stainless Steel 904L (UNS N08904 / WNR 1.4539), 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, excellent corrosion resistance, and dependable mechanical performance. Stainless Steel 904L is a low-carbon, high-alloy austenitic stainless steel containing high levels of nickel, molybdenum, and copper, providing outstanding resistance to sulfuric acid, phosphoric acid, chloride environments, pitting, crevice corrosion, and stress corrosion cracking.
Our Stainless Steel 904L 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 solution annealed, pickled, straightened, polished, and thoroughly inspected to achieve smooth surface finishes, precise dimensional tolerances, and long service life. These welded tubes provide exceptional resistance to aggressive chemicals, seawater, acidic environments, and chloride attack, making them ideal for heat exchangers, condensers, scrubbers, fertilizer plants, pollution control equipment, offshore processing systems, and marine piping applications.
At Kamal Steels, we maintain a comprehensive inventory of ASTM A249 Stainless Steel 904L 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 904L Welded Tubes for critical corrosion-resistant industrial applications across global markets.

Stainless Steel 904L Welded Tubes are specifically engineered for highly corrosive environments where exceptional resistance to aggressive acids, chloride attack, and stress corrosion cracking is essential. As a low-carbon, high-alloy austenitic stainless steel enriched with nickel, molybdenum, and copper, Grade 904L provides outstanding resistance to sulfuric acid, phosphoric acid, seawater, pitting corrosion, crevice corrosion, and reducing chemical environments. Manufactured using premium-quality stainless steel strips and advanced TIG/ERW welding technology, these welded tubes provide excellent dimensional accuracy, smooth surface finishes, and dependable long-term performance.
One of the major advantages of Stainless Steel 904L Welded Tubes is their superior corrosion resistance in environments where conventional stainless steel grades such as 304L and 316L may not provide sufficient protection. Their excellent mechanical strength, outstanding weldability, and long service life make them suitable for chemical processing plants, offshore platforms, desalination systems, marine engineering, pharmaceutical industries, fertilizer plants, pollution control equipment, heat exchangers, and process piping handling highly aggressive media.
At Kamal Steels, we manufacture and supply premium-quality ASTM A249 Stainless Steel 904L 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 904L Welded Tubes in a comprehensive range of dimensions, schedules, surface finishes, and international specifications to meet the requirements of chemical processing plants, offshore platforms, marine engineering, desalination facilities, pharmaceutical industries, fertilizer plants, heat exchangers, and other highly corrosive industrial applications. Our welded tubes are manufactured under stringent quality control procedures to ensure superior weld integrity, excellent dimensional accuracy, and dependable long-term performance in aggressive service environments.
| Specifications | ASTM A249, ASTM A269, ASTM A270, ASTM A554, ASME SA249, ASME SA269 |
|---|---|
| Standard | ASTM, ASME, DIN, EN, ISO, JIS |
| Material Grade | Stainless Steel 904L (UNS N08904 / WNR 1.4539) |
| 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) | 19.00 – 23.00 |
| Nickel (Ni) | 23.00 – 28.00 |
| Molybdenum (Mo) | 4.00 – 5.00 |
| Copper (Cu) | 1.00 – 2.00 |
| Carbon (C) | 0.02 Max |
| Manganese (Mn) | 2.00 Max |
| Silicon (Si) | 1.00 Max |
| Phosphorus (P) | 0.045 Max |
| Sulfur (S) | 0.035 Max |
| Iron (Fe) | Balance |
| Property | Value |
|---|---|
| Tensile Strength | 490 MPa Minimum |
| Yield Strength | 220 MPa Minimum |
| Elongation | 35% Minimum |
| Hardness | 90 HRB Max |
| Density | 8.00 g/cm³ |
| Standard | Equivalent Grade |
|---|---|
| UNS | N08904 |
| Werkstoff No. | 1.4539 |
| EN | X1NiCrMoCu25-20-5 |
| DIN | 1.4539 |
| JIS | SUS 890L |
Stainless Steel 904L Welded Tubes are extensively used in industries where exceptional resistance to aggressive chemicals, chloride-rich environments, seawater, and acidic media is essential. The high nickel, molybdenum, and copper content provides outstanding protection against pitting, crevice corrosion, stress corrosion cracking, and reducing acids, making these welded tubes ideal for demanding corrosion-resistant industrial applications.
At Kamal Steels, every Stainless Steel 904L Welded Tube undergoes comprehensive inspection and testing to ensure compliance with ASTM, ASME, and customer specifications. Each welded tube is carefully tested for chemical composition, weld integrity, dimensional accuracy, mechanical properties, and surface quality before dispatch.
Kamal Steels follows international export packaging standards to ensure that Stainless Steel 904L Welded Tubes are delivered 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 904L Welded Tubes, supplying premium-quality stainless steel tubing solutions for chemical processing plants, offshore platforms, marine industries, desalination plants, pharmaceutical facilities, fertilizer plants, heat exchangers, and other highly corrosive industrial environments. Manufactured according to ASTM and ASME standards, our welded tubes provide exceptional resistance to aggressive chemicals, chloride attack, pitting corrosion, crevice corrosion, and stress corrosion cracking, ensuring dependable long-term performance in severe operating conditions.
We maintain a comprehensive inventory of ASTM A249 Stainless Steel 904L 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 904L 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 corrosion-resistant industrial applications worldwide.
Stainless Steel 904L Welded Tubes are low-carbon, high-alloy austenitic stainless steel tubes designed for highly corrosive environments requiring exceptional resistance to aggressive acids, chlorides, and seawater.
Our Stainless Steel 904L Welded Tubes are manufactured according to ASTM A249, ASTM A269, ASTM A270, ASTM A554, ASME SA249, and ASME SA269 standards.
These welded tubes provide exceptional corrosion resistance, excellent protection against pitting and crevice corrosion, outstanding resistance to stress corrosion cracking, superior weldability, and long service life in aggressive chemical environments.
They are widely used in chemical processing plants, offshore platforms, marine industries, desalination plants, pharmaceutical manufacturing, fertilizer plants, pollution control equipment, heat exchangers, and process piping systems.
The high nickel, molybdenum, and copper content provides exceptional resistance to sulfuric acid, phosphoric acid, chloride attack, pitting, crevice corrosion, and stress corrosion cracking, making it suitable for severe corrosion environments.
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 904L Welded Tubes in various diameters, wall thicknesses, surface finishes, standard lengths, and custom-cut lengths according to customer specifications.
Yes. We export Stainless Steel 904L Welded Tubes worldwide with export-standard packaging, complete documentation, and timely international delivery.
Kamal Steels offers ASTM-compliant Stainless Steel 904L Welded Tubes with ready stock, certified quality, competitive pricing, stringent quality control, export-standard packaging, complete documentation, and dependable worldwide delivery for critical corrosion-resistant industrial applications.