Stainless Steel 904L Seamless Tubes

Manufacturer & Stockist of Stainless Steel 904L Seamless Tubes

Kamal Steels is a leading manufacturer, supplier, stockist, and exporter of Stainless Steel 904L Seamless Tubes, offering premium-quality seamless tubing solutions for industries requiring exceptional corrosion resistance in aggressive chemical environments. Manufactured from Stainless Steel 904L (UNS N08904 / WNR 1.4539), our seamless tubes conform to ASTM A213, ASTM A269, ASTM B677, and ASME standards, ensuring outstanding dimensional accuracy, excellent mechanical strength, and long service life. SS 904L is a high-alloy austenitic stainless steel containing elevated levels of nickel, molybdenum, and copper, providing exceptional resistance to sulfuric acid, phosphoric acid, chloride-induced pitting, crevice corrosion, and stress corrosion cracking.

Our SS 904L Seamless Tubes are manufactured using advanced cold drawing, solution annealing, and precision finishing processes to produce a completely weld-free structure capable of handling high pressure, corrosive chemicals, and demanding operating conditions. These seamless tubes offer outstanding resistance to reducing acids, seawater corrosion, oxidation, and aggressive industrial media while maintaining excellent toughness, weldability, and structural integrity. Stainless Steel 904L Seamless Tubes are widely used in chemical processing plants, fertilizer industries, petrochemical facilities, oil & gas processing, seawater handling systems, pharmaceutical manufacturing, pulp & paper mills, heat exchangers, condensers, and offshore applications.

At Kamal Steels, we maintain a comprehensive inventory of ASTM B677 / ASTM A213 TP904L Seamless Tubes in various outside diameters, wall thicknesses, surface finishes, and custom lengths to meet urgent domestic and international project requirements. Every tube undergoes stringent quality inspections, including Hydrostatic Testing, Positive Material Identification (PMI), Ultrasonic Testing (UT), Eddy Current Testing (ECT), Mechanical Testing, Chemical Analysis, and Dimensional 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 Seamless Tubes for critical corrosion-resistant industrial applications

Stainless Steel 904L Seamless Tubes

Why Choose Stainless Steel 904L Seamless Tubes?

Stainless Steel 904L Seamless Tubes are specially designed for highly corrosive environments where conventional stainless steels such as 304L and 316L may not provide sufficient resistance. With a high alloy content of nickel, molybdenum, and copper, SS 904L delivers exceptional resistance to sulfuric acid, phosphoric acid, chloride-induced pitting, crevice corrosion, and stress corrosion cracking. The seamless construction eliminates welded joints, ensuring superior pressure-bearing capability, leak-free performance, and enhanced structural integrity in critical industrial applications.

One of the major advantages of SS 904L Seamless Tubes is their outstanding resistance to aggressive chemicals, seawater, acidic media, and chloride-containing environments while maintaining excellent mechanical strength, toughness, and weldability. These tubes are widely used in chemical processing plants, fertilizer industries, petrochemical facilities, pharmaceutical manufacturing, offshore platforms, desalination plants, heat exchangers, condensers, pulp & paper mills, and oil & gas processing industries.

At Kamal Steels, we manufacture and supply premium-quality ASTM B677 / ASTM A213 TP904L Seamless Tubes produced according to international ASTM and ASME standards. Every tube undergoes comprehensive quality inspections, including Hydrostatic Testing, Ultrasonic Testing (UT), Eddy Current Testing (ECT), Positive Material Identification (PMI), Mechanical Testing, Chemical Analysis, and Dimensional Inspection to ensure exceptional product quality, reliability, and complete customer satisfaction.

Features & Benefits of Stainless Steel 904L Seamless Tubes

  • Exceptional resistance to sulfuric and phosphoric acids.
  • Excellent resistance to chloride-induced pitting and crevice corrosion.
  • Outstanding resistance to stress corrosion cracking.
  • Superior corrosion resistance in seawater and marine environments.
  • Seamless construction for leak-free, high-pressure applications.
  • Excellent weldability and fabrication characteristics.
  • High nickel and molybdenum content for aggressive chemical service.
  • Excellent toughness at both ambient and elevated temperatures.
  • Available in multiple outside diameters and wall thicknesses.
  • Supplied in Annealed & Pickled (AP), Bright Annealed (BA), and Polished finishes.
  • EN 10204 3.1 Mill Test Certificates with complete material traceability.
  • Ideal for chemical processing, fertilizer plants, offshore platforms, desalination plants, pharmaceutical industries, heat exchangers, condensers, and petrochemical applications.

Stainless Steel 904L Seamless Tube Specifications

Kamal Steels manufactures and supplies Stainless Steel 904L Seamless Tubes in accordance with internationally recognized ASTM, ASME, and EN standards. Manufactured from premium-quality Stainless Steel 904L (UNS N08904 / WNR 1.4539), these seamless tubes provide exceptional corrosion resistance, outstanding resistance to aggressive acids, excellent mechanical strength, and superior dimensional accuracy. Our SS 904L Seamless Tubes are available in various outside diameters, wall thicknesses, surface finishes, and custom lengths to meet the demanding requirements of chemical processing plants, fertilizer industries, petrochemical facilities, offshore platforms, desalination plants, pharmaceutical industries, heat exchangers, condensers, and marine applications.

Product Stainless Steel 904L Seamless Tubes
Material Grade Stainless Steel 904L (UNS N08904 / WNR 1.4539)
Specifications ASTM A213, ASTM A269, ASTM B677, ASME SA213, ASME SA269
Tube Type Seamless
Outside Diameter 6.35 mm to 101.6 mm (1/4" to 4")
Wall Thickness 0.5 mm to 12 mm
Length Single Random, Double Random, 6 Meter & Custom Cut Lengths
Surface Finish Annealed & Pickled (AP), Bright Annealed (BA), Polished
End Finish Plain End, Beveled End
Certification EN 10204 3.1 Mill Test Certificate (MTC)

Chemical Composition of Stainless Steel 904L

Element Composition (%)
Carbon (C)0.02 Max
Chromium (Cr)19.00 – 23.00
Nickel (Ni)23.00 – 28.00
Molybdenum (Mo)4.00 – 5.00
Copper (Cu)1.00 – 2.00
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 Seamless Tubes

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

Equivalent Grades of Stainless Steel 904L

Standard Equivalent Grade
UNS N08904
Werkstoff No. 1.4539
EN X1NiCrMoCu25-20-5
AISI 904L
ISO X1NiCrMoCu25-20-5

Applications of Stainless Steel 904L Seamless Tubes

Stainless Steel 904L Seamless Tubes are widely used in industries where exceptional resistance to aggressive chemicals, chloride-containing environments, and reducing acids is essential. The high nickel, molybdenum, and copper content provides outstanding resistance to pitting, crevice corrosion, stress corrosion cracking, and sulfuric acid attack. Combined with seamless construction, these tubes offer superior pressure-bearing capability, leak-free performance, and long-term durability in highly corrosive industrial environments.

  • Chemical Processing Plants
  • Petrochemical Industries
  • Fertilizer Manufacturing Plants
  • Oil & Gas Processing Facilities
  • Heat Exchangers & Condensers
  • Offshore Platforms
  • Seawater & Desalination Plants
  • Marine Engineering Applications
  • Pharmaceutical Industries
  • Pulp & Paper Mills
  • Pressure Instrumentation Systems
  • General Heavy Engineering Applications

Inspection & Testing of Stainless Steel 904L Seamless Tubes

At Kamal Steels, every Stainless Steel 904L Seamless Tube undergoes comprehensive inspection and testing to ensure compliance with ASTM, ASME, and international quality standards. Each tube is carefully inspected for chemical composition, dimensional accuracy, mechanical properties, and overall product integrity before dispatch.

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

Packaging, Marking & Documentation

Kamal Steels follows international export packaging standards to ensure that SS 904L Seamless Tubes reach customers safely without damage during transportation and storage. Tubes are fitted with protective plastic end caps, securely bundled, wrapped with protective materials, and packed in export-quality wooden boxes, crates, or pallets to prevent contamination, moisture, and mechanical damage throughout transit.

Each seamless tube is permanently marked with the material grade, ASTM specification, heat number, size, manufacturer's identification, and batch details for complete material traceability. Every shipment is supplied with EN 10204 3.1 Mill Test Certificates, inspection reports, packing lists, commercial invoices, certificates of compliance, and third-party inspection certificates whenever requested, ensuring complete documentation for domestic as well as international industrial projects.

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

Kamal Steels is a trusted manufacturer, supplier, stockist, and exporter of Stainless Steel 904L Seamless Tubes, supplying premium-quality seamless tubing solutions for chemical processing plants, fertilizer industries, petrochemical facilities, offshore platforms, desalination plants, pharmaceutical industries, pulp & paper mills, marine engineering, and oil & gas processing applications. Manufactured according to ASTM and ASME standards, our SS 904L Seamless Tubes provide exceptional corrosion resistance, outstanding resistance to aggressive acids, superior mechanical strength, excellent dimensional accuracy, and dependable long-term performance in highly corrosive environments.

We maintain a comprehensive inventory of ASTM B677 / ASTM A213 TP904L Seamless Tubes in various outside diameters, wall thicknesses, surface finishes, and custom lengths to meet urgent domestic and international project requirements. Every tube undergoes comprehensive quality inspections, including Hydrostatic Testing, Ultrasonic Testing (UT), Eddy Current Testing (ECT), Positive Material Identification (PMI), Mechanical Testing, Chemical Analysis, Flattening Tests, Corrosion Resistance Testing, and Dimensional 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 Seamless Tubes across international markets. Our commitment to quality, technical support, prompt delivery, and complete documentation enables us to provide dependable seamless tubing solutions for the most demanding corrosion-resistant industrial applications.

Why Industries Trust Kamal Steels

  • Leading manufacturer, supplier, stockist, and exporter of SS 904L Seamless Tubes.
  • Large ready stock for immediate domestic and international supply.
  • Manufactured according to ASTM A213, ASTM A269, ASTM B677, and ASME standards.
  • Available in multiple sizes, wall thicknesses, and surface finishes.
  • Comprehensive quality inspection before every shipment.
  • EN 10204 3.1 Mill Test Certificates with complete material traceability.
  • Competitive pricing with consistent product availability.
  • Export-standard packaging for safe worldwide transportation.
  • Technical support for aggressive chemical and marine applications.
  • Prompt worldwide delivery with complete export documentation.

Frequently Asked Questions

Stainless Steel 904L Seamless Tubes are high-alloy austenitic stainless steel tubes manufactured from Stainless Steel 904L (UNS N08904 / WNR 1.4539). They provide exceptional corrosion resistance in aggressive chemical, acidic, and chloride-containing environments.

Our Stainless Steel 904L Seamless Tubes are manufactured according to ASTM A213, ASTM A269, ASTM B677, ASME SA213, and ASME SA269 international standards.

SS 904L Seamless Tubes offer exceptional resistance to sulfuric acid, phosphoric acid, pitting, crevice corrosion, stress corrosion cracking, and seawater corrosion while maintaining excellent weldability and mechanical strength.

They are widely used in chemical processing plants, fertilizer industries, offshore platforms, desalination plants, marine engineering, pharmaceutical industries, heat exchangers, condensers, and petrochemical facilities.

SS 904L Seamless Tubes are available in various outside diameters, wall thicknesses, schedules, surface finishes, and custom cut lengths to meet diverse industrial requirements.

Each tube undergoes Hydrostatic Testing, Ultrasonic Testing (UT), Eddy Current Testing (ECT), Positive Material Identification (PMI), Chemical Analysis, Mechanical Testing, Flattening Test, Flaring Test, Corrosion Resistance Testing, and Dimensional Inspection.

SS 904L contains significantly higher levels of nickel, molybdenum, and copper than SS 316L, providing superior resistance to strong acids, chloride-induced pitting, crevice corrosion, and stress corrosion cracking.

Yes. Every shipment includes EN 10204 3.1 Mill Test Certificates, inspection reports, complete material traceability, and third-party inspection certificates upon request.

Yes. Kamal Steels exports Stainless Steel 904L Seamless Tubes worldwide with export-standard packaging, complete documentation, and timely international delivery.

Kamal Steels offers ASTM-compliant Stainless Steel 904L Seamless 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.