Q345B welded pipe is a kind of low alloy high-strength steel pipe, which is widely used in construction projects, bridges, vehicles, ships, pressure vessels and other fields for making various kinds of stress components and structural parts.
Q345B High Pressure Boiler Tubes Chemical composition (%)
| Composition | C | Si | Mn | P | S | Cr | Ni | Cu | Mo | N | Ti | V | Nb |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Min | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Max | 0.2 | 0.5 | 1.7 | 0.035 | 0.035 | 0.3 | 0.5 | 0.3 | 0.1 | 0.012 | 0.2 | 0.15 | 0.07 |
Q345B low-carbon alloy steel pipe Mechanical properties
| Thickness(calibre,length) t mm |
tensile strength σb Mpa |
yield point σs Mpa |
Elongation at break or elongation δ % |
|---|---|---|---|
| t≤16 | 470~630 | ≥345 | ≥20 |
| 16< t≤ 40 | 470~630 | ≥335 | ≥20 |
| 40＜t≤63 | 470~630 | ≥325 | ≥19 |
| 63＜t≤80 | 470~630 | ≥315 | ≥19 |
| 80＜t≤100 | 470~630 | ≥305 | ≥19 |
| 100＜t≤150 | 450~600 | ≥285 | ≥18 |
| 150＜t≤200 | 450~600 | ≥275 | ≥17 |
| 200＜t≤250 | 450~600 | ≥265 | ≥17 |
Q345B welded steel pipe larger diameter spiral pipe equivalence standard
| GB | JIS | ASTM | ISO | DIN EN/DIN | NF EN/NF | EN | Steel Number | SS | BS EN/BS |
| Q345B Q345C |
SM490A SS490 |
A572 A678Gr.A SSGrade50 |
E355C Fe510B |
St52-3 | E36-2 | S355JR Fe510B |
1.0045 | 2132-01 | 50B |
Q345B Welded Pipe For sale
