Stainless Steel 904L Welded Tubes

Manufacturer & Stockist of Stainless Steel 904L Welded Tubes

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

Why Choose Stainless Steel 904L Welded Tubes?

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.

Features & Benefits of Stainless Steel 904L Welded Tubes

  • Exceptional resistance to sulfuric, phosphoric, and organic acids.
  • Outstanding resistance to pitting and crevice corrosion.
  • Excellent resistance to chloride stress corrosion cracking.
  • High nickel and molybdenum content for superior corrosion protection.
  • Excellent weldability and fabrication characteristics.
  • Superior resistance in seawater and marine environments.
  • Outstanding dimensional accuracy and smooth surface finish.
  • Excellent mechanical strength and long service life.
  • Available in various sizes, finishes, and custom lengths.
  • Supplied with complete material traceability and EN 10204 3.1 certification.
  • Low maintenance with outstanding durability.
  • Ideal for chemical processing, offshore, desalination, pharmaceutical, and marine industries.

Available Types, Sizes & Specifications of Stainless Steel 904L Welded Tubes

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)

Chemical Composition of Stainless Steel 904L

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

Mechanical Properties of Stainless Steel 904L Welded Tubes

Property Value
Tensile Strength 490 MPa Minimum
Yield Strength 220 MPa Minimum
Elongation 35% Minimum
Hardness 90 HRB Max
Density 8.00 g/cm³

Equivalent Grades of Stainless Steel 904L

Standard Equivalent Grade
UNS N08904
Werkstoff No. 1.4539
EN X1NiCrMoCu25-20-5
DIN 1.4539
JIS SUS 890L

Applications of Stainless Steel 904L Welded Tubes

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.

  • Chemical Processing Plants
  • Petrochemical Industries
  • Oil & Gas Processing Facilities
  • Offshore Platforms
  • Marine & Shipbuilding Industries
  • Desalination Plants
  • Heat Exchangers & Condensers
  • Pharmaceutical Manufacturing
  • Fertilizer & Phosphoric Acid Plants
  • Pollution Control Equipment
  • Pulp & Paper Industries
  • Process Piping Systems

Inspection & Testing of Stainless Steel 904L Welded Tubes

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.

  • Positive Material Identification (PMI)
  • Chemical Composition Analysis
  • Mechanical Property Testing
  • Hydrostatic Testing
  • Eddy Current Testing (ECT)
  • Ultrasonic Testing (UT)
  • Dimensional Inspection
  • Surface Finish Inspection
  • Visual Inspection
  • Flattening & Flaring Tests
  • Third-Party Inspection Available on Request

Packaging, Marking & Documentation

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.

Why Choose Kamal Steels for Stainless Steel 904L Welded Tubes?

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.

Why Industries Trust Kamal Steels

  • Leading manufacturer, supplier, stockist, and exporter of Stainless Steel 904L Welded Tubes.
  • Large ready stock for immediate domestic and international supply.
  • Manufactured according to ASTM A249, ASTM A269, ASTM A270, ASTM A554, ASME SA249, and ASME SA269 standards.
  • Excellent resistance to sulfuric acid, phosphoric acid, and chloride environments.
  • Outstanding protection against pitting, crevice corrosion, and stress corrosion cracking.
  • High nickel, molybdenum, and copper content for superior corrosion resistance.
  • Comprehensive quality inspection before every shipment.
  • EN 10204 3.1/3.2 Mill Test Certificates with complete material traceability.
  • Competitive pricing with consistent product availability.
  • Export-standard packaging for safe worldwide transportation.
  • Prompt worldwide delivery with complete export documentation.

Frequently Asked Questions

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.