Q235B is a kind of carbon structural steel, which is mainly used to manufacture various structural parts, such as building beams, columns and plates, mechanical parts such as gears, shafts and bearings, as well as vehicle bodies and frames, etc. Q235B welded pipe is the most common carbon steel welded pipe.
Q235B straight seam welded steel pipe material equivalence table
| GB | ISC | CNS | JIS | KS | ASTM | UNS | ISO | DIN EN/DIN | W-Nr. | NF EN/NF | GOST | SS | BS EN/BS |
| Q235A Q235B Q235C Q235D (A3) (C3) |
U12352 U12355 U12358 U12359 |
SS400 | SS400 (SS41) |
SS400 | A570 Gr.A A570 Gr.D A283M Gr.D |
K02501 K02502 |
Fe360A Fe360D |
S235JR S235JRG1 S235JRG2 (St37-2) (USt37-2) (RSt37-2) |
1.0037 1.0036 1.0038 |
S235JR S235JRG1 S235JRG2 (E24-2) (E24-2NE) |
Ст3кп-2 Ст3кп-3 Ст3кп-4 БСт3кп-2 |
1311 1312 |
S235JR S235JRG1 S235JRG2 (40B) (C) |
Q235B SSAW Spiral Welded Steel Pipe Chemical composition (%)
| Composition | C | Si | Mn | P | S | Cr | Ni | Cu | As | N |
|---|---|---|---|---|---|---|---|---|---|---|
| Min | - | - | - | - | - | - | - | - | - | - |
| Max | 0.2 | 0.35 | 1.4 | 0.045 | 0.045 | 0.3 | 0.3 | 0.3 | 0.08 | 0.008 |
Q235B ERW Carbon Steel Welded Pipe Mechanical properties
| Thickness(calibre) t(d) mm |
Tensile Strength σb Mpa |
Yielding Point σs Mpa |
Elongation at break or elongationδ % |
Impact absorbed energy KV2 J |
|---|---|---|---|---|
| ≤16 | 370~500 | ≥235 | ≥26 | ≥27 |
| ＞16～40 | 370~500 | ≥225 | ≥26 | ≥27 |
| ＞40～60 | 370~500 | ≥215 | ≥25 | ≥27 |
| ＞60～100 | 370~500 | ≥215 | ≥24 | ≥27 |
| ＞100～150 | 370~500 | ≥195 | ≥22 | ≥27 |
| ＞150～200 | 370~500 | ≥185 | ≥21 | ≥27 |
Q235B ERW Weld Pipe for sale
