DIN 1629 Seamless Steel pipe Of Non Alloys Steels are made of unalloyed steels, it's main grades are St 37.0, St44.0, St52.0, Din 1629 seamless steel pipes application fields are: chemical plant, vessels, pipework construction and for common mechanical engineering purposes. Normally DIN 1629 standard are manufactured with no limiting working pressure values. Working temperature is limited below 300℃.
The main products of steel / steel grade:
DIN1629 ST37.0
DIN1629 ST44.0
DIN1629 ST52.0
Size range(mm):
Out diameter:10-324mm
Wall Tickness:1-30mm
Length:14000mm max
Note:
DN — Nominal Diameter
NPS —Nominal Pipe Size
Chemical Compositions
|
Grade |
C |
Si |
Mn |
P |
S |
|
ST37.0 |
≤0.17 |
/ |
/ |
≤0.040 |
≤0.040 |
|
ST44.0 |
≤0.21 |
/ |
/ |
≤0.040 |
≤0.040 |
|
ST52.0 |
≤0.22 |
≤0.55 |
≤1.70 |
≤0.040 |
≤0.035 |
Mechanical Properties
|
Grade |
Yield Strength |
Tensile Strength |
Elongation |
Elongation |
|
ST37.0 |
≥235 |
350-480 |
25 |
23 |
|
ST44.0 |
≥275 |
420-550 |
21 |
19 |
|
ST52.0 |
≥355 |
500-650 |
21 |
19 |
