ERW Steel Pipes
Longitudinally Welded Steel for Industrial Applications
Electric-resistance-welded steel pipes are produced by forming steel strip into a tubular section and joining its longitudinal edges using an electric-resistance welding process. ROSHA STEEL supports international steel slab sourcing through specification-based procurement, supplier coordination and international trade arrangements.
Steel Grades & Mechanical Properties
Reference: ASTM A53/A53M — Type E
| Grade | Minimum Yield Strength | Minimum Tensile Strength |
|---|---|---|
| Grade A | 205 MPa | 330 MPa |
| Grade B | 240 MPa | 415 MPa |
Chemical Composition
Reference Example: ASTM A53 Type E, Grade B
| Element | Reference Requirement |
|---|---|
| Carbon (C) | 0.30% maximum |
| Manganese (Mn) | 1.20% maximum |
| Phosphorus (P) | 0.05% maximum |
| Sulfur (S) | 0.045% maximum |
The complete chemical requirements, including additional elements and permissible deviations, must be checked against the selected ASTM A53/A53M edition.
Dimensions & Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturing Method | Electric Resistance Welding |
| Weld Seam | Longitudinal |
| Outside Diameter / NPS | As specified |
| Wall Thickness | As specified |
| Length | As agreed |
| Pipe Ends | As specified |
| Surface Finish | Black or galvanized, where applicable |
| Inspection | According to applicable standard |
Weld Integrity & Testing
Quality assessment may include weld examination, hydrostatic testing or permitted nondestructive examination, mechanical testing, dimensional verification and inspection of the finished pipe.
Applications
Steel slabs are primarily used as feedstock for: • Industrial Piping Systems • Water and Utility Lines • Mechanical Applications • General Fabrication
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Specify your grade, nominal pipe size or outside diameter, wall thickness, length, quantity, surface treatment and delivery destination.