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SS 304 ERW Tube Manufacturers in India – Steelage Alloys

Steelage Alloys is one of the leading manufacturers and suppliers of SS 304 ERW (Electric Resistance Welded) tubes in India, known for delivering high-quality stainless steel products that meet international standards. With a strong infrastructure, modern manufacturing facilities, and a skilled workforce, Steelage Alloys produces SS 304 ERW tubes that are widely used across industries such as oil & gas, petrochemicals, food processing, pharmaceuticals, construction, and more.

Introduction to Stainless Steel 304 ERW Tube

Stainless Steel 304 ERW (Electric Resistance Welded) tubes are one of the most commonly used types of stainless steel tubing in various industrial and commercial applications. Made from grade 304 stainless steel—a widely used austenitic stainless alloy—these tubes offer excellent corrosion resistance, good mechanical properties, and high durability. The ERW process involves welding the edges of a stainless steel strip using electric resistance, resulting in a strong, seamless-looking tube without the need for filler material. SS 304 is composed primarily of chromium and nickel, which contribute to its resistance to oxidation and chemical corrosion, making it suitable for use in environments exposed to moisture, chemicals, and varying temperatures.

Why Choose SS 304 ERW Tube?

  • Ideal for both indoor and outdoor applications, even in humid or chemical environments.
  • With high tensile strength, our tubes withstand heavy loads and harsh conditions.
  • ERW manufacturing provides a reliable, economical solution without compromising quality.
  • Consistent wall thickness and dimensions make installation seamless.

Our Products

Technical Specifications of SS 304 ERW Tube

Specification Item Details
Material Grade Stainless Steel 304 (AISI 304 / UNS S30400)
Manufacturing Process ERW – Electric Resistance Welded
Standards ASTM A554, ASTM A249, EN 10296, DIN 17457
Tube Type Welded (ERW)
Outer Diameter (OD) Typically from 6 mm to 114.3 mm (or custom sizes)
Wall Thickness (WT) 0.5 mm to 6.0 mm or as per customer requirements
Length 6 meters (standard) or customized
Surface Finish Polished (180, 240, 320, 600 grit), Bright Annealed, Pickled & Passivated
End Finish Plain End, Beveled End, or Customized
Tensile Strength ≥ 515 MPa (75,000 psi)
Yield Strength ≥ 205 MPa (30,000 psi)
Elongation ≥ 40%

Manufacturing Process Overview

  • Forming: Stainless steel strips are formed into a tube shape.
  • Electric Resistance Welding: Edges are welded using high-frequency current to ensure a uniform and durable seam.
  • Sizing & Straightening: Tubes are resized and straightened to meet exact dimensional standards.
  • Surface Treatment: Pickling and passivation remove impurities and enhance corrosion resistance.
  • Quality Inspection: Each tube undergoes rigorous checks to guarantee consistency, strength, and finish.

Key Features and Benefits of SS 304 ERW Tube

  • High Corrosion Resistance: Performs excellently in harsh chemical and saline environments.
  • Temperature Tolerance: Maintains integrity under high and low temperatures.
  • Hygienic Surface: Suitable for food and pharmaceutical industries.
  • Aesthetic Appeal: Smooth and polished finish enhances architectural applications.
  • Long Service Life: Reduced maintenance and replacement costs.

Chemical Composition of SS 304 ERW Tube

Standard Applies To SS 304 Composition Limits and Other Requirements
ASTM A312 Seamless and welded pipes Chromium 18–20%, Nickel 8–11%, Carbon ≤ 0.08%, Mn, Si, P, S limits
ASTM A249 Welded boiler & heat exchanger tubes Same as ASTM A312
ASME SA213 Boiler and heat exchanger tubes Mirrors ASTM composition and mechanical property requirements
Others (JIS, EN, DIN) Regional compliance Similar chemical composition criteria

Dimensional Range & Standards

Parameter Range/Specification
Outside Diameter (OD) 60 mm (2 3/8") to 610 mm (24")
Wall Thickness 0.8 mm to 12.7 mm
Length Up to 26 meters or more
Standards ASTM A312, ASTM A249, JIS, AISI, EN, DIN
Tolerances Diameter ±0.13 mm, Wall thickness ±10-15%

Mechanical Properties of SS 304 Seamless Pipes

Property Value
Tensile Strength (min) 515 MPa
Yield Strength 0.2% Proof (min) 205 MPa
Elongation (% in 50 mm, min) 40
Hardness (Rockwell B, max) 92
Hardness (Brinell, max) 201
Density 8.0 g/cm³
Modulus of Elasticity 193 GPa
Melting Point ~1400°C

Customization Options

  • Specific diameters and wall thicknesses
  • Desired surface finishes (polished, matt, brushed)
  • Tailored lengths for industrial needs
  • Special packaging for sensitive shipments

Packaging and Delivery

To ensure safe transportation and storage, our SS 304 ERW tubes are carefully packed using wooden crates, plastic wrapping, or cleanroom-ready packaging. We offer on-time delivery across India and international destinations, maintaining the integrity and quality of each tube.