Stainless Steel 304 ERW Pipes

Stainless Steel 304 ERW Pipes are 18% chromium–8% nickel austenitic alloy tubes produced via high-frequency electric resistance welding. In accordance with ASTM A312/ASME SA312, these filler-less welded pipes offer a dependable, high-performance option for high-temperature and corrosive service piping systems.

These pipes offer a tensile strength of 515 MPa and 205 MPa yield for mechanical durability. Ranging from ½" to 24" NB and SCH 5S to 80S, our corrosion-resistant inventory is vital for global pharmaceutical, food processing, chemical, and water treatment installations that require absolute long-term performance.

Stainless Steel 304 ERW Pipes Price

SS 304 ERW pipe prices in India start at ₹170-₹400 per kilogram for typical mill-finish material in popular diameters. Prices, depending on area, order quantities, and nickel and chromium rates.

Factors Affecting Price

The price may vary due to various factors, as explained below:

• Nickel and chromium concentrations impact raw material costs; LME nickel is variable.
  
  
• Heavy schedules (SCH 40S and 80S) utilise more material and cost more per meter.
  
  
• 2B mill finish is standard; No. 4, BA, and mirror finishes cost more.
  
  
• Order quantity: While the spot purchases are more costly per kilogram, full coil or mill-run orders are more affordable.
  
  
• FOB Mumbai export prices differ from European and US landing expenses.
  
  
• EN 10204 3.1 or 3.2 mill certification inspections cost more than 2.2.

Stainless Steel 304 ERW Pipes Specifications

The table below outlines the key SS 304 ERW pipe specification parameters relevant to material procurement and project design.

Chemical Composition of Stainless Steel 304 ERW Pipes

Grade 304 chemical limits per ASTM A312 are shown below. These elements determine the corrosion behaviour and weldability of the pipe.

The primary alloying element in the passive oxide layer is chromium (17.50–19.50%), imparts corrosion resistance. Nickel (8.00–10.50%) stabilises the austenitic structure and it improve the toughness of the alloy. Carbon (0.0–0.07%) is meticulously controlled to minimise sensitisation and carbide precipitation in the heat-affected zones of welds.

Mechanical Properties of Stainless Steel 304 ERW Pipes

The following mechanical property values apply to ASTM A312 TP304 ERW pipes in the annealed condition.

Physical Properties of Stainless Steel 304 ERW Pipes

Physical properties of grade 304 in the annealed condition are listed below for engineering reference.

Key Features of Stainless Steel 304 ERW Pipes

Stainless Steel 304 ERW pipes provide 7 primary benefits, making them a versatile choice for diverse industrial piping systems.

• Corrosion Resistance
• Superior Weldability
• Autogenous ERW Seam
• Extensive Size Range
• Versatile Surface Finishes
• Non-Magnetic Properties
• High-Temperature Stability

Applications of Stainless Steel 304 ERW Pipes

These pipes are utilised in many important fields where fluid transfer needs to be clean, long-lasting, and resistant to rust.

• Food and Beverage Processing
• Pharmaceutical and Biotech
• Chemical Processing
• Water Treatment Systems
• Heat Exchangers
• Structural and Architectural
• Petrochemical Utility Lines
• HVAC and Refrigeration

How to Choose the Right Stainless Steel 304 ERW Pipes Supplier?

Selecting the right grade for your project is a very essential task. Here are some points to consider before procuring the Stainless Steel 304 ERW Pipes

Selecting the Right Supplier

Not every SS 304 ERW pipe supplier carries material tested to ASTM A312. Start by confirming the supplier holds mill test certificates (MTC) to EN 10204 Type 3.1 or higher. A genuine 3.1 MTC is issued by the producing mill and covers heat-wise chemical and mechanical test results; it is not an in-house document.

Technical Considerations

Check if the given material meets NPS, schedule, and end-finish. Request dimensional inspection records (OD, wall thickness, ovality) for critical services. For sanitary applications, check surface roughness Ra against process requirements. For pressure-rated systems, verify pipe hydrostatic test reports.

Evaluating Supplier Credibility

Reliable suppliers maintain Jindal Stainless, Aperam, and Centravis stock traceable. Check ISO 9001, ISO 14001, and ISO 45001 for quality, environmental, and occupational health and safety certifications. Referrals from industry buyers are also useful.

Procurement Strategy

For project-based procurement, order non-stocked sizes 4–8 weeks in advance. Material-specific purchase order line items should mention ASTM A312, grade TP304, ERW process, NPS, schedule, end finish, and MTC type. This prevents substandard materials.