As a prominent supplier, Excellent Overseas is responsible for delivering unparalleled quality in S355 Structural Pipe from leading Manufacturers like Tubes, MSL, Seah, Hyundai, ArcelorMittal and NSSMC.
1. Supply Range & Dimensions
Seamless & ERW Pipe Size1/2" NB to 48" NB
Pipe Schedule (WT)SCH-20, SCH-40, SCH-80, SCH-160, SCH-XXS & Heavy Walls
Pipe Length6 Mtr, 12 Mtr, Fixed Length, Custom Cut Lengths
Pipe TypesHot Finished Seamless (HFS)
Pipe EndsPlain End (PE), Bevel End (BE)
Grades AvailableS355J0, S355J2, S355K2, S355J0H, S355J2H, S355K2H
Specification LevelEN 10210-1, EN 10210-2, BS EN 10210
Equivalent StandardsASTM A501 Grade C, JIS G 3466 STKR490, GB/T 6728 Q355C
Surface FinishBare, Cleaned, Lightly Oiled, Mill Varnish
CoatingHot Dip Galvanized, Epoxy Paint, 3LPE, Primer Coated
TestingImpact Test – 27 Joules minimum at 0°C
End Protection CapsPlastic Caps or Iron Protectors
CertificationsEN 10204 3.1 / 3.2, CE Marked, Third Party Inspection
2. Manufacturers in Stock

Hyundai Hysco

Valcovny Trub

Benteler Make

SEAH Korea

Butting Make

JFE Make

ArcelorMittal

Tenaris Steel

MSL Make

Nippon Steel

Tubular Canada

Tubos API
3. S355 Chemical Composition
| Steel Grades |
C Max |
Mn Max |
P Max |
Si Max |
S Max |
N Max |
| S275J2H | 0.20 | 1.50 | 0.030 | - | 0.030 | - |
| S355J2H | 0.22 | 1.60 | 0.030 | 0.55 | 0.030 | - |
| S235JRH | 0.17 | 1.40 | 0.040 | - | 0.040 | 0.009 |
| S275J0H | 0.20 | 1.50 | 0.035 | - | 0.035 | 0.009 |
| S355K2H | 0.22 | 1.60 | 0.030 | 0.55 | 0.030 | - |
| S355J0H | 0.22 | 1.60 | 0.035 | 0.55 | 0.035 | 0.009 |
4. S355 Material Mechanical Properties
| EN 10210 / Steel Grades |
Impact Energy (J) at Temp (°C) |
Mechanical Strength |
| -20°C |
0°C |
20°C |
Yield Strength (MPa) |
Elongation (%) |
Tensile Strength (MPa) |
| S275J0H | - | 27 | - | 275 | 23 | 410-560 |
| S235JRH | - | - | 27 | 235 | 26 | 360-510 |
| S355J2H | 27 | - | - | 355 | 22 | 510-680 |
| S275J2H | 27 | - | - | 275 | 23 | 410-560 |
| S355K2H | 40 | - | - | 355 | 22 | 510-680 |
| S355J0H | - | 27 | - | 355 | 22 | 510-680 |
5. S355 Steel Pipe Equivalent Standards
| Country / Region |
Standard System |
Equivalent Value / Designation |
| Europe | EN | EN 1.0576 |
| International | ISO | ISO S355J2H |
| Germany | DIN | DIN 1.0576, DIN St 52-3 N, DIN S355J2H, DIN RoSt 52-3 |
| United Kingdom | BS | BS S355J2H, BS 50D |
| North America | UNS | UNS K12709 |
| United States (USA) | AISI / SAE | AISI 345A / SAE 345A |
| France | AFNOR | AFNOR S355J2H |
6. Dimensional Tolerances of S355 Steel SHS and RHS
In accordance with EN 10210-1 and EN 10219
| Difference between |
EN 10210-1 (Hot-Finished Pipe) |
EN 10219 (Cold-Formed Pipe) |
Details |
| OD (A, B) |
± 1% (min ± 0.5 mm, max ± 3 mm) |
± 1% (min ± 0.5 mm) |
For S355 SHS and RHS dimensions (A and B) |
| Thickness |
± 10% of the nominal thickness |
± 10% of the nominal thickness |
Applies to thickness for both EN 10219 & EN 10210-1 |
| Out-of-Roundness |
NA |
≤ 2% of the diameter |
Applies to CHS; not applicable to SHS and RHS |
| Concavity/Convexity |
Allowed within dimension tolerance |
N/A |
Convexity/Concavity affects straightness |
| Squareness of Corners |
90° ± 1.5° |
90° ± 1.5° |
Tolerance will be same for both standards |
| External Corner Radius |
≤ 3 times the thickness (t) |
N/A |
Hot-formed S355 tubes are typically allows larger corner radii |
| Twist (Torsion) |
2 mm + 0.5 mm/m length |
2 mm + 0.5 mm/m length |
Similar torsion limits in EN 10219 & EN 10210-1 sections |
| S355 Pipe Straightness |
0.15% of total length |
0.15% of total length |
Max deviation |
| Mass per Unit Length |
± 6% |
± 6% |
Same mass tolerance |
| S355 Pipe Length Tolerance |
+0/-50 mm |
+0/-50 mm |
This is for S355 pipe random lengths |
7. S355 Material Tolerance Chart
| OD mm |
Special mill lengths m* |
Standard mill lengths m |
Tolerance mm |
| 21.3 - 42.4 | 5.4 - 7.5 | 6.0, 6.4, 7.5 | +150-0 |
| 48.3 | 5.4 - 14.6 | 6.0, 6.4, 7.5 & 10.0 | +150-0 |
| 60.3 - 114.3 | 5.0 - 14.6 | 6.0, 6.4, 7.5 & 10.0 | +150-0 |
| 139.7 | 6.0 - 14.5 | 7.5 & 10.0 | +150-0 |
| 168.3 - 193.7 | 6.0 - 14.6 | 7.5, 10.0 & 12.0 | +150-0 |
| 219.1 - 508.0 | 6.0 - 14.6 | 10.0 & 12.0 | +150-0 |
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8. Heat Treatment of EN 10210 S355 Seamless Pipe
| Hot Forming Temp °C |
Cooling Type |
Normalizing |
Stress Relieving Anneal |
| 700 - 750 °C |
Air Cooled |
850 - 950 °C |
580 - 630 °C |
9. Coatings and Protection EN 10210 S355 Pipe Coating Types
Excellent Overseas supplies HIC & SSCC Tested EN 10210 S355 Pipe in Selangor, Pahang, Pathum Thani, Sarawak, West Java and Kepulauan RIAU with Multilayer Coating as per Requirement.
Surface Finish: Natural, Black Painting, Varnished
Protective Coatings: 3LPE, 3PP, FBE, 3PE
Lining/Cladding: CRA Clad and Lined Pipe
End Protection Caps: Plastic or Iron
10. Quality Assurance and Testing of EN 10210 S355 Pipe
- HIC - Hydrogen-induced Cracking (TM0284)
- Stress Test
- Hardness Test
- TM0177
- IBR Compliance
- Creep Testing
- Salt Spray Test (to test Phosphating)
- Mechanical Testing
- Burst Test
- Hydro Test
- Ferrite Inspection
- SSC - Sulfide Stress Corrosion Cracking
- Straightness Inspection
- H2 SERVICE
- Macro Examination
- Eddy Current
- Non Destructive Testing (NDT)
11. Process of Manufacturing
12. Countries We Export To
Canada
Turkey
Spain
Vietnam
Malaysia
Germany
Saudi Arabia
Singapore
France
Mexico
Kuwait
USA
South Korea
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Egypt
China
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