DIN 1629 is the standard specifies the Seamless Circular Tubes of Non Alloys Steels with Special Quality Requirements.
DIN 1629 applications the overheated boilers, as minimum thickness ferrite and seamless steel pipes, and as heat exchangers via austenitic pipes.
It is used for manufacturing pipeline,vessel,equipment,pipe fittings.
· DIN1629 ST37.0
· DIN1629 ST44.0
· DIN1629 ST52.0
Packing: Bare/bundles/crates/crate protection at the both sides of tubes or as per customers’ requirements .
· Out diameter:10-324mm
· Wall Tickness:1-30mm
· Length:14000mm max
Note:
DN — Nominal Diameter
NPS —Nominal Pipe Size
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 |
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 |
Please note the meaning of below abbreviation in table 2:
· HR----Hot Rolled
· CW----Cold Worked
· SR----Stress Relieved
· A----Annealed
· N----Normalized
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