SS 304 Seamless Tube Suppliers

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SS 304 Seamless Tube Manufacturer in India - Steelage Alloys

Steelage Alloys is a leading manufacturer, exporter, and supplier of Stainless Steel 304 Seamless Tubes in India, offering premium-grade products that meet international quality and dimensional standards. With years of expertise and advanced production technology, we deliver SS 304 seamless tubes widely used across chemical, pharmaceutical, petrochemical, food processing, and instrumentation industries.

Our manufacturing facilities follow strict quality controls and inspection procedures, ensuring reliability and consistency in every tube produced. Steelage Alloys’ commitment to innovation, precision, and timely delivery has positioned us among the most trusted stainless steel tube suppliers worldwide.

Introduction to Stainless Steel 304 Seamless Tube

SS 304 seamless tubes are a type of austenitic stainless steel tube that is manufactured without welding. Being seamless, these tubes offer uniform mechanical properties, excellent strength, and resistance to corrosion.

The composition of SS 304 includes chromium (18-20%) and nickel (8-10.5%), providing resistance to oxidation and corrosion in a variety of environments. Unlike welded tubes, seamless tubes do not have a seam, eliminating weak points and enhancing performance under high pressure or high temperature.

Applications include pipelines, heat exchangers, condensers, chemical reactors, pharmaceutical equipment, and food processing systems. Their versatility and long service life make them a vital component in industries requiring durable and reliable tubing solutions.

Why Choose SS 304 Seamless Tube?

  • Corrosion Resistance: Excellent resistance to rust, scaling, and pitting in diverse environments.
  • Strength and Durability: Seamless construction ensures uniform mechanical properties, ideal for high-pressure applications.
  • Temperature Tolerance: Can withstand high-temperature and cryogenic applications without deformation.
  • Hygienic Applications: Perfect for food, beverage, and pharmaceutical industries where cleanliness is critical.
  • Low Maintenance: Resistant to corrosion and scaling, reducing maintenance costs over time.

Technical Specifications of SS 304 Seamless Tube

Property Range / Specification
Outer Diameter 6 mm to 600 mm
Wall Thickness 0.5 mm to 25 mm
Length Up to 12 meters (custom lengths available)
Finish Polished, Matt, Pickled & Passivated, Annealed
Standards ASTM A213, ASME SA213, DIN 11850, EN 10216-5
Packaging Wooden crates, plastic wrapping, or cleanroom-ready options

Manufacturing Process Overview

  • Raw Material Inspection: Stainless steel billets and hollows are carefully inspected for chemical consistency. Heating and Piercing: The selected billets are heated uniformly and pierced into a hollow form using piercing mills.
  • Elongation and Sizing: Tubes are elongated and sized to specific diameters through mandrel and plug mill operations.
  • Heat Treatment: Tubes undergo controlled solution annealing to enhance corrosion resistance and structural integrity.
  • Surface Preparation: The tubes are pickled and polished for a smooth, clean, and contaminant-free surface.
  • Testing and Inspection: Every tube undergoes ultrasonic, hydrostatic, and eddy current testing.
  • Final Finishing and Marking: Tubes are dimensionally checked, engraved with batch and grade details, and packed for shipment.

Key Features and Benefits of SS 304 Seamless Tube

  • Seamless construction eliminating weld seams.
  • High tensile and yield strength.
  • Excellent dimensional accuracy and surface finish.
  • Resistance to high temperatures and pressures.
  • Non-magnetic in annealed condition.

Benefits:

  • Longer operational lifespan with minimal maintenance.
  • Compatibility with aggressive chemical environments.
  • Superior hygiene standards suitable for sterile applications.
  • Cost-effective performance for industrial piping and tubing systems.

Chemical Composition of SS 316 Seamless Pipes

Element Percentage (%)
Carbon (C) 0.08 max
Manganese (Mn) 2.00 max
Phosphorus (P) 0.045 max
Sulfur (S) 0.03 max
Silicon (Si) 1.00 max
Chromium (Cr) 16.0 – 18.0
Nickel (Ni) 10.0 – 14.0
Molybdenum (Mo) 2.0 – 3.0
Nitrogen (N) 0.10 max

Dimensional Range & Standards

Range:

  • Outside Diameter: 6 mm – 610 mm
  • Wall Thickness: 0.5 mm – 30 mm
  • Length: Up to 12 meters (or custom cut)

All tubes conform to precise dimensional tolerances and undergo continuous quality checks to ensure seamless structural uniformity.

Mechanical Properties of SS 304 Seamless Tube

Property SS 316
Tensile Strength 515 MPa (min)
Yield Strength 205 MPa (min)
Elongation 40%
Hardness (HRB) 90 (max)
Density 8.0 g/cm³
Melting Point 1400°C (approx.)

Customization Options

  • Outer diameter, thickness, and length customization.
  • Choice of surface finishes: bright, matte, mirror-polished, or pickled.
  • Special end preparations – beveled, threaded, or flanged.
  • Dual grade marking (e.g., 304/304L).
  • Custom packaging and export documentation support.

Packaging and Delivery

Steelage Alloys ensures that every SS 304 seamless tube reaches its destination safely and in perfect condition through secure and professional packaging methods.

Packaging Details:

  • Bundled and secured using steel straps or shrink wrapping.
  • Wrapped in waterproof material to prevent moisture and oxidization.
  • Wooden boxes or pallets used for export shipments for added protection.
  • Plastic end caps fitted to prevent contamination or mechanical damage.

Steelage Alloys continues to set benchmarks as one of India’s top SS 304 seamless tube manufacturers and suppliers. Our products combine advanced metallurgical expertise, strict production control, and client-focused customization.

For applications requiring performance, precision, and corrosion resistance — Steelage Alloys’ SS 304 seamless tubes present the trusted engineering solution to industries around the world.

Main Grades

202

304

304L

316

316L

309

310

317

317L

321

347

904

Duplex Stainless Steel 2205

Duplex Stainless Steel 2507

Manufacturing Process

Seamless Pipe/Tube

hastelloy round bar

Round Bar

Analytic

Analytic

Cut to Length

Cut to Length

Centering

Centering

Heating

Heating

hastelloy round bar

Perforation

Inspection of Size

Inspection of Size

Pickling

Pickling

Inspection of Surface

Inspection of Surface

Lubricating

Lubricating

Cold Drawing (Cold Rolling)

Cold Drawing

Degreasing

Degreasing

Annealing

Annealing

Cut

Cut

Straightening

Straightening

Pickling / Passivating

Pickling / Passivating

Inspection

Inspection

Analytic

Analytic

Marking

Marking

Packing & Shipping

Packing & Shipping

Drawing & Formula

SS 304 seamless tube suppliers, manufacturer

Formula: m = (OD - THK) × THK (mm) × L (m) × ρ (g/cm³) × π ÷ 1000
OD = Outside Diameter, THK = Wall Thickness, L = Length
ρ = Density, π = 3.1415926...

Package

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Plastic Bag

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Wooden case

Logistics

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By Sea

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By Air