Seamless Square Steel Pipe ASTM A500 400×400×12mm × 6 meters
High-quality square pipe hollow black iron S275JR welded square steel pipe designed for structural applications.
Product Specifications
Available Dimensions
| Product Type |
Size Range |
Thickness |
Length |
| Round Pipe |
OD 310mm - 1000mm |
4mm - 30mm |
Any length |
| Square Pipe |
10mm×10mm - 1000mm×1000mm |
1.2mm - 30.0mm |
Standard lengths |
| Rectangle Pipe |
20mm×40mm - 400mm×700mm |
1.2mm - 30.0mm |
Standard lengths |
| L/T/Z Window Section |
28mm/38mm |
0.5mm - 1.5mm |
Standard lengths |
Product Details
- Material: Q195, Q215, Q235, Q345, etc.
- Surface: Black or bright, painted or oiled
- Packing: Export standard packing (bundles, seaworthy package, shipped in container)
- Delivery Port: Shanghai, China
- Lead Time: Within 30 days after receiving original L/C or deposit
- MOQ: 10 Tons per size
- Usage: Widely used in structure; Motorbike and Automobile; Ornamental; Medical equipment; Sport equipment and Home furniture
- Production Capacity: 10,000MT per month
- Main Market: Europe, America, Africa, Southeast Asia
EN 10025 S355 Steel
S355 steel is a European standard structural steel grade according to EN 10025-2:2004, offering superior properties compared to S235 and S275 steel in yield strength and tensile strength.
S355 Steel Quality Grades
- S355JR (1.0045)
- S355J0 (1.0553)
- S355J2 (1.0577)
- S355K2 (1.0596)
Steel Grade Designation Meaning
- "S": Structural steel
- "355": Minimum yield strength value for flat and long steel thickness ≤ 16mm
- "JR": Impact energy value minimum 27 J at room temperature (20°C)
- "J0": Withstands impact energy at least 27 J at 0°C
- "J2": Minimum impact energy value 27 J at -20°C
- "K2": Minimum impact energy value 40 J at -20°C
Technical Datasheet and Specifications
Chemical Composition
| Standard |
Steel |
Grade |
C |
Si |
Mn |
P |
S |
Cu |
N |
Method of Deoxidation |
| EN 10025-2 |
S355 |
S355JR |
0.24 |
0.55 |
1.60 |
0.035 |
0.035 |
0.55 |
0.012 |
Rimmed steel not allowed |
| S355J0 (S355JO) |
0.20 |
0.55 |
1.60 |
0.030 |
0.030 |
0.55 |
0.012 |
- |
| S355J2 |
0.20 |
0.55 |
1.60 |
0.025 |
0.025 |
0.55 |
- |
Fully killed |
| S355K2 |
0.20 |
0.55 |
1.60 |
0.025 |
0.025 |
0.55 |
- |
Fully killed |
Mechanical Properties - Yield Strength
| Steel |
Steel Grade |
d≤16 |
16< d ≤40 |
40< d ≤63 |
63< d ≤80 |
80< d ≤100 |
100< d ≤150 |
150< d ≤200 |
200< d ≤250 |
| S355 |
S355JR (1.0045) |
355 |
345 |
335 |
325 |
315 |
295 |
285 |
275 |
| S355J0 (1.0553) |
Same as S355JR |
| S355J2 (1.0577) |
Same as S355JR |
| S355K2 (1.0596) |
Same as S355JR |
Mechanical Properties - Tensile Strength
| Steel |
Steel Grade |
d<3 |
3 ≤ d ≤ 100 |
100 < d ≤ 250 |
| S355 |
S355JR |
510-680 |
470-630 |
450-600 |
| S355J0 (S355JO) |
Same as S355JR |
| S355J2 |
Same as S355JR |
| S355K2 |
Same as S355JR |
Mechanical Properties - Elongation
| Steel |
Steel Grade |
3≤d≤40 |
40< d ≤63 |
63< d ≤100 |
100< d ≤ 150 |
150< d ≤ 250 |
| S355 |
S355JR |
22 |
21 |
20 |
18 |
17 |
| S355J0 (S355JO) |
Same as S355JR |
| S355J2 |
Same as S355JR |
| S355K2 |
20 |
19 |
18 |
18 |
17 |