S355J2+N Square TubeEN 10219 · ASTM A554 / EN 10219 · Manufacturer, stockist & exporter, India
EN 10025-2 S355J2+N · W.Nr 1.0577
An S355J2+N square tube is square hollow section, for use with S355J2+N service. S355J2+N itself is a pipe or plate specification, so the matching square tube is made to EN 10219 square & rectangular sections — which is what we supply for S355J2+N lines. Square tube is used for frames, handrails, architecture and structures.
- EN 10219
- ASTM A554 / EN 10219
- EN 10204 3.1 / 3.2
- Export packing
Reviewed by the Kanak Steel & Engineering Co. technical team · Updated October 2026
What is an S355J2+N Square Tube?
- What it is
- Square hollow section
- Material
- EN 10219 square & rectangular sections
- Dimensions
- ASTM A554 / EN 10219
- Grade
- S355J2+N
- Best at
- Heavy structures, cranes and offshore frames
S355J2+N Square Tube Specification
| Product | S355J2+N Square Tube |
|---|---|
| Material standard | EN 10219 square & rectangular sections |
| Dimensional standard | ASTM A554 / EN 10219 |
| Sizes | OD × wall to order |
| Length | Random, double random or cut lengths |
| Testing | Chemical & mechanical per heat · NDT · impact where specified |
| Documents | EN 10204 3.1 · 3.2 with third-party inspection |
When to Choose a Square Tube
Square tube is used for frames, handrails, architecture and structures.
- Square hollow section
- Polished or mill finish
- Cut lengths
More on choosing: Square tube guide.
S355J2+N Square Tube: Why S355J2+N for square tubes
Square tube is used for frames, handrails, architecture and structures. In S355J2+N, the choice usually comes down to the medium and temperature — the rows here are the points buyers check for this exact combination.
| Why this grade | Carbon steel tubulars carry most hydrocarbon and utility service. S355J2+N is picked for heavy structures, cranes and offshore frames. |
|---|---|
| Typical service | Heavy structures — Bridges, cranes and towers. |
| Welding to carbon steel | Matching carbon or low-alloy filler is used; joints to stainless need ER309L |
| Matching filler | E7018 / ER70S-6 |
S355J2+N Square Tube Chemical Composition
| Element | Weight % |
|---|---|
| Carbon | 0.20 max (≤16 mm) |
| Manganese | 1.60 max |
| Silicon | 0.55 max |
| Phosphorus | 0.025 max |
| Sulphur | 0.025 max |
| Copper | 0.55 max |
S355J2+N Square Tube Mechanical Properties
| Normalised (+N) | Value |
|---|---|
| Yield strength | 355 MPa (≤16 mm) |
| Tensile strength | 470 – 630 MPa |
| Elongation | 22% |
| Charpy impact | 27 J at −20 °C |
Full chemistry, properties and equivalents are on the S355J2+N grade page.
Standards on this page
Other S355J2+N pipes & tubes
S355J2+N Square Tubes for export
FOB / CIF · Nhava Sheva (JNPT), MumbaiS355J2+N Square Tube — questions buyers ask
What finishes are available on square tube?
Mill finish, 180–320 grit polish and hairline, depending on grade.
Can S355J2+N square tubes be welded to carbon steel?
Yes — matching carbon or low-alloy filler is used; joints to stainless need ER309L.
Which standard covers S355J2+N square tubes?
The material is EN 10219 square & rectangular sections; dimensions follow ASTM A554 / EN 10219. Always state both on your purchase order, with the edition if your project specifies one.
What decides the price of a S355J2+N square tube?
The steel price, the size and dimensions, quantity, and the testing and documents required. Send your list and we quote the same working day.
What documents do you supply?
EN 10204 3.1 mill certificates as standard, 3.2 with third-party inspection on request, plus dimensional and PMI reports.
Sources: the ASTM / ASME specifications named on this page and producer datasheets · Last updated October 2026