Seamless steel pipe includes SMLS Steel Pipe DIN1629 which is a CS round pipe. As for this special seamless steel pipe, we can get the details for its chemical composition so that we would know which circumstance would be better for it.
|
Grade |
C
|
Si
|
Mn
|
P
|
S
|
Cr
|
Ni
|
Cu |
|
St37.0
|
≤0.17
|
0.17-0.37 |
0.35-0.65
|
≤0.025
|
≤0.020 |
≤0.25
|
≤0.25
|
≤0.25
|
|
St44.0
|
≤0.21
|
0.17-0.37
|
0.50-0.80 |
≤0.025 |
≤0.020 |
≤0.25
|
≤0.25 |
≤0.25
|
|
St55
|
0.33-0.41
|
0.17-0.37
|
0.50-0.80
|
≤0.025
|
≤0.020
|
≤0.25
|
≤0.25 |
≤0.25 |
|
St52.0
|
≤0.22 |
≤0.55 |
≤1.60 |
≤0.025 |
≤0.020
|
≤0.25 |
≤0.25
|
≤0.25 |
We know from the list that the main difference is on the quantity of C, Si, Mn. These elements give a different style life various strength handling and pressure taking for steel pipes. We can wholesale according to the project.
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