ERW Steel Pipes (Electric Resistance Welded) are the economical, high-strength solution for fluid transmission and structural applications. Manufactured from premium steel coils and welded longitudinally with advanced High-Frequency Induction (HFI) technology, our ERW pipes deliver uniform wall thickness, superior surface finish, and exceptional reliability. Ideal for water, gas, oil, construction, and scaffolding projects across Pakistan.

Electric Resistance Welded (ERW) Steel Pipes

STCAST offers world-class Electric Resistance Welded (ERW) steel pipes, engineered for precision, durability, and cost-effectiveness across a wide spectrum of industrial and civil applications.

What is an ERW Pipe?

ERW stands for Electric Resistance Welded.³ This process involves cold-forming a flat strip of high-quality steel (coil) into a cylindrical shape.⁴ The two edges are then heated by passing a high-frequency electric current (High-Frequency Induction or HFI Welding) through them.⁵ Pressure is simultaneously applied to forge the edges together, creating a strong, clean, longitudinal weld without the need for filler metal.⁶

Key Features & Advantages

• Uniform Wall Thickness: Since they are produced from a rolled steel coil, ERW pipes feature highly consistent wall thickness, ensuring predictable strength and performance.⁷

• Superior Surface Finish: The manufacturing process results in a smooth internal and external surface, which is critical for efficient fluid flow and reduced maintenance.⁸

• High Production Efficiency: The automated ERW process allows for rapid production, ensuring competitive pricing and timely delivery for large-scale projects.⁹

• Versatile Applications: Suitable for low to medium-pressure applications, offering excellent value compared to seamless pipes in many use cases.¹⁰

• Available Finishes: We supply pipes in various finishes including Black (Mill Finish), Hot-Dip Galvanized, and Protective Coatings (e.g., FBE, 3LPE) for enhanced corrosion resistance.

Common Applications

Our ERW Steel Pipes are the trusted choice for various sectors:

• Fluid Transmission: Water supply and drainage systems, oil and gas pipelines (low-pressure), and agricultural irrigation.¹¹

• Structural: Scaffolding, structural support columns, fence posts, and general construction frameworks.¹²

• Mechanical & General: Machinery manufacturing, boiler industries, and equipment parts.¹³

• Utilities: Street lighting poles and cable protection conduits.

Technical Specifications (Sample)

We manufacture and supply ERW pipes to meet leading international and national standards, including: