ERW / Seamless Pipes
What are ERW / Seamless Pipes?
ERW Pipes are manufactured by welding steel strips longitudinally, while Seamless Pipes are produced from solid billets, offering superior strength and pressure handling. Both types ensure excellent corrosion resistance, uniformity, and long service life.
Asiad Steel Industries is a leading manufacturer and exporter of high-quality ERW (Electric Resistance Welded) Pipes and Seamless Pipes, catering to a wide range of industrial applications. These pipes are available in multiple grades, diameters, and thicknesses to meet the demands of construction, oil & gas, petrochemical, mechanical, and structural sectors.
Key ERW / Seamless Pipes
High Strength & Durability – Built to perform under high pressure and temperature.
Smooth Internal Finish – Ensures consistent flow and minimal pressure drop.
Wide Material Availability – Offered in Carbon Steel, Stainless Steel, Alloy Steel, and more.
Versatile Usage – Ideal for structural, fluid transport, mechanical, and pressure applications.
Compliance with Global Standards – ASTM, ASME, API, EN, DIN, and JIS certified.
Types of ERW / Seamless Pipes
Round Pipe
Square Pipe
Rectangular Pipe
Specifications
Mechanical Properties
Chemical Composition
Equivalent Grades
Weight Chart
Specifications
| Parameter | ERW Pipes | Seamless Pipes |
|---|---|---|
| Size Range | ½” NB to 24″ NB | ½” NB to 20″ NB |
| Thickness | 1.2 mm to 15 mm | Sch 10 to Sch 160 / XXS |
| Length | Up to 12 meters | Random / Cut-to-length |
| Manufacturing Std. | ASTM A53, API 5L, BS 1387 | ASTM A106, A335, API 5L, EN10210 |
| Material Grades | CS, SS, Alloy, Duplex | CS, SS, Alloy, Nickel Alloys |
| Surface Finish | Black, Galvanized, Polished | Pickled, Bright Annealed |
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.10 – 0.30 |
| Manganese | 0.50 – 1.65 |
| Silicon | 0.10 – 0.35 |
| Sulfur (S) | ≤ 0.040 |
| Phosphorus | ≤ 0.035 |
| Iron (Fe) | Balance |
| Property | Value |
|---|---|
| Tensile Strength | 350 – 610 MPa |
| Yield Strength | 240 – 450 MPa |
| Elongation | 20% – 35% |
| Hardness (HB) | 120 – 180 |
| Working Temp. | -20°C to +450°C (Material Dep.) |
| Standard | Equivalent Grades |
|---|---|
| ASTM | A53, A106 Gr. A/B, A333, A335 |
| API | API 5L Gr. B / X42 / X52 / X65 |
| DIN | St 35.8, St 52.4 |
| EN | P235GH, P265GH, S355J2H |
| JIS | G3454 STPG370 / STPG410 |
| Pipe Size (NB) | Thickness (mm) | Weight (kg/m) |
|---|---|---|
| 1″ | 3.2 | 3.60 |
| 2″ | 4.0 | 6.35 |
| 4″ | 6.3 | 13.55 |
| 6″ | 7.1 | 20.45 |
| 8″ | 8.2 | 29.10 |
Applications of ERW / Seamless Pipes
Construction &
Infrastructure
Automotive & Heavy
Equipment
Manufacturing &
Fabrication
Medical & Laboratory
Equipment
Electrical &
Electronics Assembly
Oil, Gas & Petrochemical
Installations
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