MS Seamless Pipe vs MS ERW Pipe: Key Differences & Industrial Applications

 

Understanding the Role of MS Pipes in Udhhyog (Industrial Use) Mild Steel (MS) pipes are essential in India’s growing udhhyog sectors—from infrastructure and power plants to chemical and water distribution systems. Choosing between MS Seamless and ERW (Electric Resistance Welded) pipes impacts cost, pressure capacity, and long-term reliability.

Quick Comparison – Seamless vs ERW Pipe

Feature	MS Seamless Pipe	MS ERW Pipe
Manufacturing Process	Extruded without welding	Formed and welded from strip
Pressure Capacity	High (suitable for critical use)	Moderate (non-critical use)
Cost per Kg	₹85 – ₹105	₹60 – ₹70
Udhhyog Use Cases	Refineries, power plants	Plumbing, scaffolding, pipelines
Sizes Available	20 NB – 300 NB	15 NB – 150 NB
Standard Codes	ASTM A106, API 5L	IS 1239, IS 3589

When to Choose MS Seamless Pipes

• For high-pressure and high-temperature applications

• Where strength, durability, and leak-free performance are critical

• Used in:

  • Boilers

  • Refineries

  • Power generation plants

  • Udhhyog-grade mechanical systems

When to Use MS ERW Pipes

• For general structural and low-pressure systems

• Cost-effective for bulk fabrication

• Common in:

  • Plumbing lines

  • Structural supports

  • Water pipelines in urban infrastructure

Advantages of Each Type Seamless Pipes:

• Uniform strength across the body

• Withstands high stress without cracks

• Ideal for udhhyog applications involving pressure & chemicals

ERW Pipes:

• More affordable and available

• Lightweight and easy to handle

• Perfect for standard structural projects

Buying Guide: Which MS Pipe is Right for Your Project?

1. Check Pressure Ratings – Seamless for >100 bar, ERW for ≤50 bar.

2. Verify Certification – ASTM for Seamless, ISI for ERW.

3. Cost Consideration – ERW is cheaper and widely stocked.

4. Application Type – Critical use: Seamless; Non-critical: ERW.

Top MS Pipe Suppliers for Udhhyog in India

Supplier Name	City	Specialization	Contact Verified
Mahadev Metal Udyog	Delhi	Seamless & ERW Pipes	✅
Steel Craft Tubes	Mumbai	Boiler-Grade Seamless	✅
Bharat Pipes & Fittings	Ahmedabad	ISI-Certified ERW	✅
Udhhyog Steel Solutions	Faridabad	Custom-sized pipes	✅

Pricing Snapshot – May 2025

Pipe Type	Size Range	Price/Kg (₹)	Price/Meter (₹)
MS Seamless Pipe	20NB–300NB	85–105	180–350
MS ERW Pipe	15NB–150NB	60–70	120–200

Service Coverage

• Delhi, Faridabad, Bhiwadi, Pune, Ahmedabad, Bengaluru

• Nationwide dispatch available via transport & logistic networks

FAQs

What is the main difference between seamless and ERW pipes?
Seamless pipes are extruded without welds, ideal for high-pressure udhhyog use. ERW pipes are formed with a welded seam and suit structural or low-pressure systems.

Which pipe is cheaper: seamless or ERW?
ERW pipes are more economical, costing ₹60–70 per kg, while seamless pipes range from ₹85–105 per kg.

Can seamless pipes be used in water pipelines?
Yes, especially where pressure and corrosion resistance are required. However, ERW is more commonly used for general water supply.

Is there a specific industry where only seamless pipes are used?
Yes, industries like oil & gas, boiler manufacturing, and chemical processing rely exclusively on seamless pipes due to high safety standards.