ProDucts
ERW Pipes and Tubes - Electric Resistance Welded
Electric Resistance Welded (ERW) pipes and tubes are produced by feeding a rectangular steel strip through a rolling machine that gradually curls the long edges upward toward each other, forming a round (cylindrical) shape. In the ERW process, high-frequency electrical current is passed between the two edges, causing them to heat, melt, and fuse together — creating a longitudinal weld along the full length of the ERW steel pipes.
A key advantage of these ERW steel pipes is that no filler (fusion) metal is used, resulting in a weld seam that is typically smooth and uniform, often difficult to see or feel. This makes ERW steel pipes a popular choice in various applications, including steel tubing.
Modern High-Frequency ERW Technology
Welded pipe manufacturing has advanced significantly over the years, particularly with the introduction of Electric Resistance Welded (ERW) technology. One of the most important improvements was the industry-wide shift to high-frequency electric current welding. Earlier low-frequency ERW weld seams, which were common prior to the 1970s, were generally more susceptible to corrosion and seam-related failures compared to modern high-frequency ERW methods.
In the production of ERW steel pipes and steel tubing, we utilize high-quality materials such as continuous-cast, fully-killed, control-rolled, fine-grain, low-carbon steel. This approach supports consistent welding, performance, and reliability.
High-performance ERW pipes and tubes are recognized for their:
- High strength
- Good corrosion resistance
- High deformability
- Strong toughness and durability
Applications
Electric Resistance Welded (ERW) steel pipes and tubes are widely utilized for various applications, including general engineering and fabrication, fencing, scaffolding, line pipe applications, and structural and industrial use based on specification. The versatility of ERW steel pipes makes them a popular choice in the industry, especially when it comes to steel tubing.
Product Range & Capabilities
We offer Electric Resistance Welded (ERW) steel pipes and tubing in a broad range of sizes, shapes, and thicknesses:
ERW Pipe
Lengths from single random up to 46 feet (depending on mill capability)
Size ½”-6” in Schedule 10 & 40
ERW Tube / Hollow Sections
½”x ½” - 6”x 6” up to ¼” thickness
Square sizes: ½”x ½” - 6”x 6” up to ¼” thickness
Rectangular: 1” x ½” – 6” x 2” up to ¼" thickness
Available in multiple quality levels and wall thickness combinations
Pre-Galvanized Pipe & Tube
Pre-galvanized options available in a wide range of thicknesses and size combinations
Plates/ Sheets
12 Ga- ½” thick in 4’x8’ to 6’x10’
Based on customer requirements, we can manufacture ERW steel pipes and steel tubing in different sizes and shapes to meet project needs.