EN 10217 S275JR ERW Pipe
Basic Overview
EN 10217 S275JR ERW pipe is a welded carbon steel tube manufactured to the European standard for pressure purposes [citation:1, citation:5]. S275JR is a non-alloy structural steel grade with a minimum yield strength of 275 MPa (approximately 17% higher than S235JR) and guaranteed impact toughness of 27 J at room temperature (+20°C) [citation:2, citation:3, citation:7]. The ERW (Electric Resistance Welding) process produces a longitudinal weld seam, making this pipe suitable for low to medium pressure fluid transmission and general engineering applications [citation:1, citation:4].
Understanding the Designation
| Part | Meaning |
|---|---|
| EN 10217 | European standard for welded steel tubes for pressure purposes [citation:5, citation:8, citation:9] |
| S275JR | Material grade – "S" indicates structural steel, "275" is minimum yield strength in MPa, "JR" denotes impact testing at +20°C (27J min) [citation:3, citation:8] |
| ERW | Electric Resistance Welded – pipe formed from steel coil and welded longitudinally without filler metal [citation:1, citation:6] |
Key Features
| Feature | Description |
|---|---|
| Yield Strength (min) | 275 MPa (for thickness ≤ 16mm) [citation:3, citation:8] |
| Tensile Strength | 410-560 MPa [citation:3, citation:8] |
| Elongation (min) | 20-23% (depending on wall thickness) [citation:3, citation:8] |
| Impact Energy (min) | 27 J at +20°C – the "JR" suffix guarantees room temperature toughness [citation:3, citation:8] |
| Manufacturing | Electric Resistance Welded (ERW) – cold formed and high-frequency welded [citation:1, citation:6] |
| Size Range | 21.3 mm to 660 mm (1/2" to 26") OD [citation:1, citation:2, citation:4] |
| Wall Thickness | 1.0 mm to 22.2 mm [citation:1, citation:4, citation:6] |
| Length | 3 m to 18 m standard; custom lengths available [citation:2, citation:4, citation:6] |
| End Finishes | Plain ends, beveled ends, threaded [citation:6, citation:10] |
Chemical Composition
| Element | Maximum % | Notes |
|---|---|---|
| Carbon (C) | 0.20-0.22% | Low carbon for excellent weldability [citation:3, citation:8] |
| Manganese (Mn) | 1.40-1.50% | Provides strength and hardenability [citation:3, citation:8] |
| Silicon (Si) | 0.40-0.55% | Deoxidizer [citation:3, citation:8] |
| Phosphorus (P) | 0.030-0.045% | Controlled for weldability [citation:3, citation:8] |
| Sulfur (S) | 0.030-0.045% | Controlled for toughness [citation:3, citation:8] |
Mechanical Properties
| Property | Value | Condition |
|---|---|---|
| Yield Strength ReH (min) | 275 MPa | Thickness ≤ 16mm [citation:3, citation:8] |
| 265 MPa | 16mm < t ≤ 40mm | |
| Tensile Strength Rm | 410-560 MPa | Thickness 3-16mm [citation:3, citation:8] |
| Elongation (min) | 20-23% | Longitudinal, 5.65√S₀ [citation:3, citation:8] |
| Impact Energy (min) | 27 J | +20°C, 10×10mm specimen [citation:3, citation:8] |
| Modulus of Elasticity | 200 GPa | |
| Density | 7.85 g/cm³ |
EN 10217 Standard Parts
EN 10217 is divided into multiple parts based on application [citation:1, citation:5, citation:9]:
| Part | Title | Application |
|---|---|---|
| EN 10217-1 | Non-alloy steel tubes with specified room temperature properties | General pressure applications at ambient temperatures – applicable for S275JR [citation:1, citation:5] |
| EN 10217-2 | Electric welded tubes with elevated temperature properties | For elevated temperature service (up to 400°C) – S275JR is not typically used; P235GH/P265GH are the GH grades |
For S275JR, EN 10217-1 is the applicable standard [citation:1, citation:5].
Dimensional Tolerances (EN 10219-2 / EN 10217)
| Parameter | Tolerance |
|---|---|
| Outside Diameter | ±1% (min ±0.5mm, max ±10mm) |
| Wall Thickness (t ≤ 5mm) | ±10% |
| Wall Thickness (t > 5mm) | ±0.5mm |
| Straightness | ≤ 0.20% of total length (max 3mm/m) |
| Length (fixed) | +50mm / -0mm |
Common Applications
| Application | Description |
|---|---|
| Low-Pressure Fluid Transmission | Water, gas, and oil lines [citation:1, citation:2, citation:7] |
| Structural Applications | Building frames, supports, scaffolding [citation:1, citation:5] |
| General Engineering | Machinery components, conveyor systems [citation:2, citation:5] |
| Infrastructure | Fencing, handrails, barriers [citation:1, citation:5] |
| Piling and Foundations | Medium-load bearing piles [citation:1, citation:5] |
| Heating Systems | Low-temperature heating circuits |
Key Advantages
| Advantage | Description |
|---|---|
| Higher Strength than S235JR | 275 MPa yield – approximately 17% higher than S235JR (235 MPa) [citation:3, citation:8] |
| Good Weldability | Low carbon content allows welding without pre-heating for most thicknesses |
| Cost-Effective | ERW process provides economic advantage over seamless for many sizes [citation:1, citation:6] |
| Wide Availability | Commonly stocked by manufacturers globally [citation:1, citation:2, citation:4, citation:7] |
| Guaranteed Toughness | 27 J at +20°C ensures reliable performance at room temperature [citation:3, citation:8] |
| CE/UKCA Marking | Available for construction products under EU regulations |
Important Considerations
1. EN 10217 is a Pressure Standard
EN 10217 is specifically for pressure purposes [citation:5, citation:9]
For structural applications (non-pressure), EN 10219 is the appropriate standard [citation:1, citation:5, citation:9]
2. S275JR vs. S275JRH
S275JR: Material grade defined in EN 10025-2 for plates, sections, bars
S275JRH: Hollow section designation under EN 10219 for cold-formed welded tubes – the "H" suffix indicates hollow section [citation:1, citation:5, citation:8]
For ERW pipe under EN 10219, S275JRH is the correct grade designation [citation:1, citation:2, citation:8]
3. Impact Properties
The "JR" suffix guarantees Charpy impact energy of 27 J at +20°C [citation:3, citation:8]
For 0°C impact requirements, specify S275J0
For -20°C impact requirements, specify S275J2 [citation:1, citation:3, citation:5]
4. ERW Manufacturing Process
ERW pipes are produced using high-frequency resistance welding [citation:1, citation:5]:
Cold forming from steel coil
High-frequency welding without filler metal
100% non-destructive testing of weld seam (ultrasonic or eddy current) [citation:3, citation:5]
Hydrostatic testing for pressure applications [citation:3, citation:5]
5. Testing Requirements
Typical tests for EN 10217 S275JR ERW pipe include [citation:2, citation:3, citation:5]:
Chemical analysis
Tensile test (yield strength, tensile strength, elongation)
Flattening test
Bend test
Hydrostatic test
Non-destructive testing (ultrasonic or eddy current)
Impact test (27J at +20°C)
6. Coating Options
Black (bare): Standard mill finish [citation:2, citation:7]
Hot-dip galvanized: For corrosion protection (to EN ISO 1461) [citation:7, citation:10]
3LPE/FBE: For buried applications [citation:2, citation:3, citation:5]
Varnish/Anti-rust oil: Temporary protection during transport [citation:2, citation:3, citation:5]
7. Mill Test Certificate
Typically provided as EN 10204 Type 3.1B with full test results [citation:2, citation:3, citation:4]
Third-party inspection (SGS, BV, Lloyds) available upon request
International Equivalents
| Standard | Equivalent Grade | Notes |
|---|---|---|
| ASTM | A36 (similar) | 250 MPa yield vs. 275 MPa |
| GB/T | Q275 | Chinese equivalent [citation:2, citation:3, citation:4] |
| JIS | SS400 | Japanese standard |
| DIN | ST44-2 | Historical German equivalent |
Summary
EN 10217 S275JR ERW pipe is a welded carbon steel tube manufactured to the European pressure standard. With minimum yield strength of 275 MPa (approximately 17% higher than S235JR) and guaranteed impact toughness of 27 J at +20°C, this pipe is widely used in low-pressure fluid transmission, structural applications, and general engineering throughout Europe and globally [citation:1, citation:2, citation:5].
Key features:
Manufactured to EN 10217-1 for pressure purposes [citation:1, citation:5]
Higher strength than S235JR for more demanding applications [citation:3, citation:8]
Low carbon content ensures excellent weldability [citation:3, citation:8]
ERW process provides cost-effective production for sizes up to 24" OD [citation:1, citation:6]
The "JR" suffix guarantees room temperature impact toughness (27 J at +20°C) [citation:3, citation:8]
Available with EN 10204 Type 3.1 mill certificates for full traceability [citation:2, citation:3, citation:4]
Common applications include:
Low-pressure water, gas, and oil lines [citation:1, citation:2, citation:7]
Structural frames and supports [citation:1, citation:5]
Fencing, handrails, and barriers [citation:1, citation:5]
General engineering components [citation:2, citation:5]
When ordering, specify: EN 10217-1, Grade S275JR, ERW, Size (OD x WT), Length, End Finish, Coating, and EN 10204 Certificate Type [citation:1, citation:5].
