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.
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.
| 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% |
| 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 |
| 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% |
| 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 |
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.
Round Bar
Analytic
Cut to Length
Centering
Heating
Perforation
Inspection of Size
Pickling
Inspection of Surface
Lubricating
Cold Drawing
Degreasing
Annealing
Cut
Straightening
Pickling / Passivating
Inspection
Analytic
Marking
Packing & Shipping
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...
Plastic Bag
Wooden case
By Sea
By Air