EN 58G Grade Steel Pipes are high-quality seamless carbon steel pipes manufactured according to the EN 10216-2 standard. These pipes are designed to withstand medium to high-pressure applications, making them ideal for industrial pipelines, boilers, heat exchangers, and structural frameworks. They offer a combination of strength, durability, and precise dimensional accuracy. Their seamless construction ensures superior mechanical performance compared to welded pipes. EN 58G pipes are widely trusted in power plants, chemical industries, and infrastructure projects globally.
EN 58G pipes are made from low to medium-carbon steel with controlled chemical composition. Carbon content ranges between 0.20% and 0.25%, manganese 0.40%–0.70%, and silicon 0.10%–0.35%. Phosphorus and sulfur levels are maintained below 0.035% to improve toughness and minimize scaling. Trace amounts of chromium and nitrogen enhance hardness and durability. This composition ensures high strength while maintaining excellent ductility and weldability for industrial applications.
The pipes are produced using seamless manufacturing techniques, including hot piercing of billets followed by elongation. Heat treatments such as normalizing and stress relief ensure uniform mechanical properties and dimensional accuracy. Each pipe is inspected using ultrasonic testing and hydrostatic pressure tests to verify integrity. EN 58G manufacturing ensures pipes meet strict EN 10216-2 standards for pressure, strength, and safety.EN 58G pipes exhibit excellent mechanical properties. Tensile strength ranges from 500 to 640 MPa, yield strength is ≥ 280 MPa, and elongation is ≥ 18%. Impact toughness is 27 J at 20°C, while hardness does not exceed 170 HB. These properties make them suitable for pipelines, boilers, and structural frameworks requiring high strength and toughness.
Although primarily carbon steel, EN 58G pipes provide moderate corrosion resistance. Low phosphorus and sulfur reduce scaling and pitting. For enhanced durability, pipes can be coated, painted, or galvanized. Proper maintenance and protective coatings extend service life, especially in humid or outdoor conditions. EN 58G pipes comply with EN 10216-2 standards, available in diameters from 21.3 mm to 610 mm, with wall thicknesses from 2 mm to 40 mm. Standard lengths are 6 m and 12 m, with custom lengths available. Tight tolerances ensure compatibility with flanges, fittings, and valves for precise industrial installations.
EN 58G pipes are widely used in oil and gas pipelines, water supply systems, power plants, chemical industries, boilers, and heat exchangers. They are suitable for transporting liquids and gases under medium and high pressures. Their strength, weldability, and corrosion resistance make them versatile for multiple industrial applications. Heat treatment processes, including normalizing and stress relief, are applied to EN 58G pipes to eliminate internal stresses and improve mechanical properties. Depending on application requirements, annealing or quenching may be used to enhance ductility and toughness. Heat-treated pipes perform reliably under varying pressure and temperature conditions.
EN 58G pipes offer excellent weldability due to their controlled carbon content. Pipes can be welded manually or automatically, and can be bent, flanged, or threaded without compromising integrity. Proper welding and fabrication ensure secure joints and reliable performance in pipelines and structural systems. EN 58G pipes are supplied with smooth, defect-free surfaces. Surface finishes include black, painted, or galvanized to enhance corrosion resistance. Smooth interiors improve fluid flow, while uniform exteriors ensure effective sealing with fittings and flanges. High-quality surface finish reduces maintenance and prolongs service life.
| Specification | Details |
|---|---|
| Standard | EN 10216-2 |
| Grade | EN 58G |
| Type | Seamless Carbon Steel Pipes |
| Material | Low to Medium 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 (depending on schedule) |
| Length | 6 m / 12 m or as per requirement |
| Surface Finish | Black / Painted / Galvanized |
| Mechanical Properties |
Tensile Strength: 500 – 640 MPa Yield Strength: ≥ 280 MPa Elongation: ≥ 18% |
| Test & Certification | Hydrostatic Test, Ultrasonic Test, Chemical & Mechanical Test Certificates |
| Applications | Pipelines, Water & Gas Transport, Boilers, Heat Exchangers, Structural Applications |
Each EN 58G pipe undergoes rigorous testing, including hydrostatic pressure, ultrasonic inspection, tensile and yield strength tests, impact testing, and chemical analysis. Non-destructive testing ensures internal integrity. All pipes meet EN 10216-2 standards and come with traceable certification for quality assurance and safety compliance. Proper storage is crucial to maintain quality. EN 58G pipes should be stored in dry, ventilated areas, stacked carefully to prevent deformation, and handled using cranes or forklifts. Protective coatings or wraps are recommended for long-term storage. Correct handling ensures pipes remain straight, clean, and ready for installation.
EN 58G pipes provide high strength, durability, and reliability for medium and high-pressure applications. They offer moderate corrosion resistance, excellent weldability, and compliance with international standards. Standardized dimensions facilitate easy installation, and uniform mechanical properties ensure consistent performance across pipelines and structures. EN 58G pipes fully comply with EN 10216-2 standards for seamless carbon steel pipes. Certification documents verify chemical composition, mechanical properties, and traceability. Compliance ensures safety, quality, and compatibility with global piping systems, making them suitable for industrial, commercial, and infrastructure projects.
EN 58G Grade Steel Pipes are reliable, high-performance solutions for pipelines, boilers, heat exchangers, and structural applications. They combine precise dimensions, high strength, moderate corrosion resistance, and excellent weldability. Trusted globally, EN 58G pipes are ideal for industrial, commercial, and infrastructure projects requiring durability and safety.
| Element | Percentage (%) |
|---|---|
| Carbon (C) | 0.20 – 0.25 |
| Manganese (Mn) | 0.40 – 0.70 |
| Phosphorus (P) | ≤ 0.035 |
| Sulfur (S) | ≤ 0.035 |
| Silicon (Si) | 0.10 – 0.35 |
| Chromium (Cr) | ≤ 0.35 |
| Nitrogen (N) | ≤ 0.012 |
| Property | Value |
|---|---|
| Tensile Strength (Rm) | 500 – 640 MPa |
| Yield Strength (ReH) | ≥ 280 MPa |
| Elongation (A) | ≥ 18% |
| Impact Strength | 27 J at 20°C (Charpy V-notch) |
| Hardness | ≤ 170 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 58G |
| DIN (Germany) | St 52.3 / 1.0425 |
| BS (UK) | BS 3605 Grade 43G |
| ASTM (USA) | ASTM A106 Grade B / ASTM A53 Grade B |
| JIS (Japan) | STB 48 |
| IS (India) | IS 1239 Medium / IS 3589 |
| EN (Other European) | P265GH (similar mechanical properties) |
EN 58G Grade Steel Pipes are seamless carbon steel pipes manufactured according to EN 10216-2 standards. They are designed for medium to high-pressure applications, including pipelines, boilers, heat exchangers, and structural frameworks.
EN 58G pipes contain Carbon 0.20–0.25%, Manganese 0.40–0.70%, Silicon 0.10–0.35%, Phosphorus ≤ 0.035%, Sulfur ≤ 0.035%, with trace amounts of Chromium and Nitrogen for improved hardness and durability.
Tensile strength: 500–640 MPa, Yield strength: ≥ 280 MPa, Elongation: ≥ 18%, Impact toughness: 27 J at 20°C, Hardness: ≤ 170 HB, Modulus of Elasticity: ≈ 210 GPa.
Diameters range from 21.3 mm to 610 mm, with wall thicknesses from 2 mm to 40 mm. Standard lengths are 6 m or 12 m, with custom lengths available upon request.
Yes, EN 58G pipes have excellent weldability due to controlled carbon content. They can be welded manually, semi-automatically, or automatically while maintaining structural integrity.
These pipes are used in oil and gas pipelines, water and gas transport, boilers, heat exchangers, structural applications, and industrial plants requiring medium to high-pressure steel pipes.
EN 58G pipes provide moderate corrosion resistance. Protective coatings, galvanization, or painting can improve durability in humid or outdoor environments.
Equivalent grades include ASTM A106 Grade B, ASTM A53 Grade B (USA), BS 3605 Grade 43G (UK), DIN St 52.3 (Germany), JIS STB 48 (Japan), and IS 1239 Medium Class (India).
Testing includes hydrostatic tests, ultrasonic inspection, tensile and yield strength tests, impact tests, and chemical analysis to ensure compliance with EN 10216-2 standards.
Pipes should be stored in dry, ventilated areas, stacked carefully to prevent deformation, and handled with cranes or forklifts. Protective coatings are recommended for long-term storage.
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