ERW Carbon Steel Round Pipe
ERW Carbon Steel Round Pipes are a fundamental component in countless industrial and construction applications. Known for their durability, cost-effectiveness, and excellent weldability, these Electric Resistance Welded pipes are manufactured by forming skelp or steel plate and passing it through a series of rolls, then heating the edges electrically to forge a seamless bond. This process creates a strong, uniform pipe ideal for conveying fluids, structural purposes, and mechanical applications. For projects requiring even greater pressure integrity, consider our Seamless Carbon Steel Round Tube. Many of our ERW pipes conform to the widely recognized ASTM A53 Carbon Steel Round Tube standard, suitable for mechanical and pressure applications. In high-temperature service environments, the ASTM A106 Grade B Round Pipe specification is often the preferred choice for seamless versions, highlighting the performance criteria for demanding conditions. When enhanced corrosion resistance is paramount, our Galvanized Carbon Steel Round Pipe offers a protective zinc coating, extending the pipe's lifespan significantly, especially in outdoor or exposed installations.
The manufacturing precision of ERW Carbon Steel Round Pipe ensures consistent dimensions and a smooth internal surface, which minimizes flow resistance—a critical factor in piping systems. Available in a vast range of sizes, from small-diameter tubes to large-scale pipes, it provides exceptional versatility. The inherent strength of carbon steel allows these pipes to withstand substantial internal pressure and external loads, making them a reliable choice for structural frameworks, fencing, handrails, and fluid transport in oil and gas, water supply, and HVAC systems. Strict quality control throughout the production process guarantees that each length of ERW Carbon Steel Round Pipe meets or exceeds industry standards for chemical composition, mechanical properties, and dimensional tolerances. This reliability, combined with the economic advantages of the ERW process, makes this product a cornerstone material for engineers and procurement specialists worldwide.
Key Specifications & Parameters
- Standard: ASTM A53, ASTM A135, ASTM A500, API 5L, ANSI, DIN, JIS, BS, EN.
- Grade: Grade A, Grade B, Grade C, or as per specific standard requirements.
- Type: Type E (Electric Resistance Welded), Type F (Furnace Butt Welded), Type S (Seamless).
- Steel Code: Carbon Steel (C, Mn, P, S, Si as per grade).
- Outer Diameter (OD): 1/8" NPS to 24" NPS (and larger upon request).
- Wall Thickness: SCH 10, SCH 20, SCH 30, STD, SCH 40, SCH 80, XS, SCH 160, XXS, and custom schedules.
- Length: Random (16'-24'), Single Random (18'-22'), Double Random (38'-40'), or Cut to Length.
- End Finish: Plain End, Beveled End, Threaded & Coupled, or Grooved.
- Surface Treatment: Black (mill varnished), Oiled, Galvanized (Hot-Dip or Electro), Painted, or Bare.
- Testing: Hydrostatic Test, Non-Destructive Testing (Eddy Current, Ultrasonic), Flattening Test, Bend Test, Tensile Test, Chemical Analysis.
Common Dimensional Data (ASTM A53 / A500)
| Nominal Pipe Size (NPS) |
Outer Diameter (inches) |
Schedule / Wall Thickness |
Approx. Weight (lbs/ft) |
| 1/2" |
0.840 |
SCH 40 (0.109") |
0.85 |
| 1" |
1.315 |
SCH 40 (0.133") |
1.68 |
| 2" |
2.375 |
SCH 40 (0.154") |
3.65 |
| 4" |
4.500 |
SCH 40 (0.237") |
10.79 |
| 6" |
6.625 |
SCH 40 (0.280") |
18.97 |
| 8" |
8.625 |
SCH 40 (0.322") |
28.55 |
| 10" |
10.750 |
SCH 40 (0.365") |
40.48 |
Mechanical Properties (Typical for ASTM A53 Grade B)
| Property |
Value |
Test Method |
| Tensile Strength, min |
60,000 psi |
ASTM A370 |
| Yield Strength, min |
35,000 psi |
ASTM A370 |
| Elongation in 2", min |
See ASTM Standard* |
ASTM A370 |
*Elongation varies based on wall thickness and specimen type.
Chemical Composition (Typical for ASTM A53 Grade B, % max unless noted)
| Element |
Composition |
| Carbon, max |
0.30 |
| Manganese, max |
1.20 |
| Phosphorus, max |
0.05 |
| Sulfur, max |
0.045 |
| Copper, min (when required) |
0.20 |
