EN 58E Grade Steel Pipes are seamless carbon steel pipes manufactured according to the EN 10216-2 standard. These pipes are designed for medium-pressure applications and provide excellent strength, durability, and reliability. They are widely used in pipelines, boilers, water and gas transport systems, and structural frameworks. EN 58E pipes are known for precise dimensions, consistent wall thickness, and uniform mechanical properties. Their superior quality makes them a preferred choice for industrial, commercial, and construction applications. They offer long service life under moderate pressure and temperature conditions.
EN 58E pipes are made from low-carbon steel with controlled chemical composition to ensure optimal performance. Carbon content typically ranges from 0.17% to 0.22%, providing good weldability and ductility. Manganese, silicon, phosphorus, and sulfur are present in regulated amounts to improve strength and toughness. Trace elements such as chromium and nitrogen enhance hardness and corrosion resistance. This carefully balanced chemical composition ensures reliability under moderate pressure and temperature in industrial applications.
EN 58E pipes are manufactured using seamless pipe production techniques, which involve piercing solid billets and elongating them into pipes with uniform wall thickness. Hot working and cold finishing processes are employed to improve mechanical properties and surface quality. Normalizing or other heat treatments relieve internal stresses. Pipes undergo strict quality checks, including dimensional inspection, ultrasonic testing, and hydrostatic pressure testing. This ensures that every EN 58E pipe meets international standards and is free of defects.
EN 58E Grade Steel Pipes offer excellent mechanical properties. Tensile strength ranges from 450–600 MPa, with a yield strength of ≥ 250 MPa. Elongation is ≥ 20%, ensuring flexibility during installation. Impact toughness at room temperature is generally 27 J (Charpy V-notch). Hardness is ≤ 160 HB, and modulus of elasticity is approximately 210 GPa. These properties make EN 58E pipes suitable for medium-pressure fluid transport, structural applications, and welding processes.
While EN 58E pipes are not stainless steel, they provide moderate corrosion resistance. Low sulfur and phosphorus levels reduce scaling and pitting. Coatings, galvanization, or painting can further improve durability. This makes EN 58E pipes suitable for indoor and outdoor applications, including water, gas, and industrial fluid transport. Proper maintenance ensures long-term performance even in humid or mildly corrosive environments.
EN 58E pipes conform to EN 10216-2 standards with precise dimensions. They are available in diameters ranging from 21.3 mm to 610 mm and wall thicknesses from 2 mm to 40 mm, depending on schedule and pressure requirements. Standard pipe lengths are 6 m or 12 m, though custom lengths are available. Dimensional tolerances are tightly controlled to ensure seamless integration with fittings, flanges, and other piping components. Accurate dimensions facilitate safe and efficient pipeline installations.
| Specification | Details |
|---|---|
| Standard | EN 10216-2 |
| Grade | EN 58E |
| Type | Seamless Carbon Steel Pipes |
| Material | Low Carbon Steel |
| End Type | Plain End / Beveled End / Threaded End |
| Diameter Range | 21.3 mm – 610 mm (Outer Diameter) |
| Wall Thickness | 2.0 mm – 40 mm (depends on schedule) |
| Length | 6 m / 12 m or as per requirement |
| Surface Finish | Black / Painted / Galvanized |
| Mechanical Properties |
Tensile Strength: 450 – 600 MPa Yield Strength: ≥ 250 MPa Elongation: ≥ 20% |
| Test & Certification | Hydrostatic Test, Ultrasonic Test, Chemical & Mechanical Test Certificates |
| Applications | Pipelines, Water & Gas Transport, Boilers, Heat Exchangers, Structural Applications |
EN 58E pipes are used across multiple industries, including power generation, chemical processing, oil and gas, water treatment, and construction. They are ideal for pipelines, heat exchangers, boilers, and structural frameworks. Their mechanical strength and moderate corrosion resistance make them suitable for transporting fluids and gases under moderate pressure. EN 58E pipes are also used in HVAC systems, fire protection lines, and general industrial fabrication projects.
Heat treatment enhances the performance of EN 58E pipes. Normalizing relieves internal stresses and improves uniformity. Annealing or quenching may be applied for specific applications to enhance ductility, toughness, and wear resistance. Heat treatment ensures that pipes can withstand pressure variations and temperature changes without structural damage. It guarantees consistent mechanical performance and durability across all batches.
EN 58E pipes are highly weldable due to their low carbon content. They can be joined using manual, semi-automatic, or automatic welding methods. Pipes can be bent, flanged, or threaded without compromising integrity. Proper welding techniques ensure strong joints suitable for pressure-bearing applications. Fabrication flexibility makes EN 58E pipes ideal for custom pipeline designs and industrial installations.
| Element | Percentage (%) |
|---|---|
| Carbon (C) | 0.17 – 0.22 |
| Manganese (Mn) | 0.35 – 0.65 |
| Phosphorus (P) | ≤ 0.035 |
| Sulfur (S) | ≤ 0.035 |
| Silicon (Si) | 0.10 – 0.35 |
| Chromium (Cr) | ≤ 0.30 |
| Nitrogen (N) | ≤ 0.012 |
| Property | Value |
|---|---|
| Tensile Strength (Rm) | 450 – 600 MPa |
| Yield Strength (ReH) | ≥ 250 MPa |
| Elongation (A) | ≥ 20% |
| Impact Strength | 27 J at 20°C (Charpy V-notch) |
| Hardness | ≤ 160 HB |
| Modulus of Elasticity (E) | ≈ 210 GPa |
| Density | ≈ 7.85 g/cm³ |
| Nominal Diameter (DN) | Outer Diameter (OD) mm | Wall Thickness (mm) | Weight (kg/m) |
|---|---|---|---|
| 15 | 21.3 | 2.0 – 3.2 | 1.2 – 1.8 |
| 20 | 26.9 | 2.3 – 3.6 | 1.7 – 2.6 |
| 25 | 33.7 | 2.6 – 4.0 | 2.3 – 3.4 |
| 32 | 42.4 | 2.6 – 4.5 | 3.2 – 4.8 |
| 40 | 48.3 | 2.9 – 4.8 | 3.8 – 5.5 |
| 50 | 60.3 | 3.2 – 5.0 | 5.0 – 7.1 |
| 65 | 76.1 | 3.6 – 5.5 | 6.5 – 9.8 |
| 80 | 88.9 | 4.0 – 6.3 | 8.5 – 13.0 |
| 100 | 114.3 | 4.5 – 7.1 | 12.0 – 18.5 |
| 125 | 139.7 | 4.8 – 8.0 | 16.5 – 25.0 |
| 150 | 168.3 | 5.0 – 8.8 | 22.0 – 32.0 |
| 200 | 219.1 | 5.6 – 9.5 | 33.0 – 51.0 |
| 250 | 273.0 | 6.3 – 11.0 | 51.0 – 81.0 |
| 300 | 323.9 | 7.1 – 12.5 | 72.0 – 111.0 |
| 350 | 355.6 | 7.6 – 14.0 | 90.0 – 140.0 |
| 400 | 406.4 | 8.0 – 15.0 | 115.0 – 180.0 |
| Standard | Equivalent Grade / Material |
|---|---|
| EN 10216-2 (Europe) | EN 58E |
| DIN (Germany) | St 37.0 / 1.0038 |
| BS (UK) | BS 3605 Grade 41E |
| ASTM (USA) | ASTM A106 Grade B / ASTM A53 Grade B |
| JIS (Japan) | STB 37 |
| IS (India) | IS 1239 Medium Class / IS 3589 |
| EN (Other European) | P265GH (similar mechanical properties) |
EN 58E Grade Steel Pipes are seamless carbon steel pipes manufactured as per EN 10216-2 standard. They are suitable for medium-pressure pipelines and structural applications.
EN 58E pipes contain Carbon 0.17–0.22%, Manganese 0.35–0.65%, Silicon 0.10–0.35%, Phosphorus ≤ 0.035%, Sulfur ≤ 0.035%, and trace Chromium and Nitrogen for enhanced properties.
Tensile strength: 450–600 MPa, Yield strength: ≥ 250 MPa, Elongation: ≥ 20%, Impact strength: 27 J at 20°C, Hardness: ≤ 160 HB, Modulus of Elasticity: ≈ 210 GPa.
EN 58E pipes are available in diameters ranging from 21.3 mm to 610 mm, wall thicknesses from 2 mm to 40 mm, and standard lengths of 6 m or 12 m, with custom lengths available.
Yes, these pipes have excellent weldability due to low carbon content. They can be welded manually or using automated processes following EN-standard procedures.
They are used in pipelines, boilers, heat exchangers, water and gas systems, structural frameworks, HVAC systems, and fire protection installations.
They offer moderate corrosion resistance. Galvanizing, painting, or coating can improve durability, especially in humid or outdoor environments.
Equivalent grades include ASTM A106 Grade B, ASTM A53 Grade B (USA), BS 3605 Grade 41E (UK), DIN St 37.0 (Germany), JIS STB 37 (Japan), and IS 1239 Medium Class (India).
They undergo hydrostatic testing, ultrasonic inspection, mechanical tests, impact tests, and chemical analysis to ensure compliance with EN 10216-2 standards.
Pipes should be stored in dry, ventilated areas, stacked properly to prevent deformation, and handled with cranes or forklifts. Protective coatings are recommended for long-term storage.
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