hemos obtenido ISO 9001, ISO 14001, ISO 45001, CE, certificación de calificación crediticia de nivel AAA, etc.
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 |
