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1.1.2 Hot Rolled Coil For Welded
Tubes And Pipes
Formability and Weldability are necessary characteristics
for manufacturing tubes & pipes used for structural, machines, furniture, automobile industries and related
sectors. We can supply according to American, Japanese, European Standards & other international specifications.
The most commonly used international steel grades are included in the following table.
Pipes
and Tubes
|
Grade
| JIS G3132 |
EN 10149-2 |
DIN 1614 |
| SPHT1 |
S315 MC |
ST 22 |
| SPHT2 |
S355 MC |
|
| SPHT3 |
S420 |
|
| SPHT4 |
S460 MC |
|
Chemical
Composition
| |
C% max. |
Mn% max. |
Si% max. |
S% max. |
P% max. |
| SPHT1 |
0.10 |
0.5 |
0.35 |
0.04 |
0.04 |
| SPHT2 |
0.18 |
0.6 |
0.35 |
0.04 |
0.04 |
| SPHT3 |
0.25 |
0.3 to 0.9 |
0.35 |
0.04 |
0.04 |
| SPHT4 |
0.30 |
0.3 to 1.0 |
0.35 |
0.04 |
0.04 |
*
Mechanical Properties (JIS G3132)
| Steel Grade |
YS (N/mm_) min. |
UTS (N/mm_) min. |
EL (%) min 50mm G.L. |
| SPHT1 |
- |
270 |
32 |
| SPHT2 |
- |
340 |
27 |
| SPHT3 |
- |
410 |
22 |
| SPHT4 |
- |
490 |
18 |
*
Typical mechanical properties of 1.5 to 3mm HR Strip. Please contact us for steel grades not mentioned in this table or for any
specific specification.
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