ERW Carbon Steel Welded Pipe
High-quality ERW carbon steel pipe (Electric Resistance Welded) for structural, mechanical, and fluid transport applications. Available in ASTM A53, API 5L, and other global standards.
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Description
Product Description
ERW (Electric Resistance Welded) carbon steel pipes are produced by forming steel coils into round shapes and welding the seam using high-frequency electric resistance. ERW pipes offer a smooth surface, consistent thickness, and are ideal for medium-pressure fluid systems, structural projects, fencing, and more.
Compared to seamless pipes, ERW welded pipes are more cost-effective, with faster production times and excellent dimensional accuracy.
Standards & Grades Available
| Standard | Grade | Typical Use |
|---|---|---|
| ASTM A53 | Grade A / B | Low-pressure & mechanical systems |
| API 5L | B, X42 – X60 | Line pipe for oil, gas, water |
| EN10217 | P195, P235, P265 | Pressure and structural systems |
| GB/T 3091 | Q195, Q235, Q345 | General-purpose fluid transport |
Specifications of ERW Carbon Steel Pipe
| Outer Diameter (OD) | 21.3mm – 610mm (1/2″ – 24″) |
|---|---|
| Wall Thickness | 1.2mm – 20mm (SCH 10 – SCH 160, XXS) |
| Length | 5.8m, 6m, 11.8m, 12m, or custom |
| Ends | Plain, Beveled, or Threaded |
| Finish | Black painted, galvanized, oiled |
| Process | ERW (High-frequency resistance welded) |
| Density | ~7.85 g/cm³ |
Key Applications
Oil and gas pipeline systems
Water and sewage piping
Structural construction and supports
Fencing and scaffolding
Fire-fighting and sprinkler systems
Mechanical tubing and furniture frames
Advantages of ERW Carbon Steel Pipe
Cost-effective compared to seamless pipes
Uniform wall thickness and surface finish
Fast production and high availability
Available in long lengths (up to 12m)
Easy to cut, weld, and thread on-site
Customizable in OD, wall thickness, and coating
FAQ – ERW Carbon Steel Pipe
Q1: What is the difference between ERW and seamless carbon steel pipe?
A: ERW pipes are welded from coils and are more cost-effective, while seamless pipes are extruded without a weld, offering better strength for high-pressure use.
Q2: Is ERW pipe suitable for oil and gas?
A: Yes. API 5L ERW pipes are widely used in oil and gas line pipe applications (onshore & offshore).
Q3: Can ERW pipes be galvanized?
A: Yes. We offer both pre-galvanized and hot-dip galvanized options.
Q4: What’s the maximum length of ERW pipes?
A: Standard length is up to 12 meters, but we can supply cut-to-length as required.
Q5: Are ERW pipes good for structural use?
A: Absolutely. Their dimensional accuracy and uniformity make them ideal for frames, scaffolding, columns, and fences.
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