DIN 2391 ST37 steel pipe is a low-carbon steel grade composed mainly of carbon, nitrogen, phosphorus, and sulfur. It provides a minimum yield strength of 235 MPa and a minimum tensile strength of 470 MPa, and can be processed through hot rolling, cold rolling, cutting, grinding, machining, and forming.
DIN 2391 ST37 Pipe Dimensions & Specifications
Outer diameter: 4 mm–60 mm
Wall thickness (welded type): 0.5 mm–8 mm
Length: up to 6000 mm
Schedules: Defined based on wall thickness and outer diameter
Different pipe schedules are available to meet varying pressure needs.
DIN 2391 ST37 Steel Pipe Features & Performance
DIN 2391 ST37 pipes offer strong wear resistance and can withstand high stress, making them suitable for demanding conditions.
The seamless ST37 variant also provides high impact resistance, allowing reliable use in outdoor or high-impact environments.
Applications of DIN 2391 ST37 Steel Pipe
DIN 2391 ST37 pipes are widely used in:
Petroleum & petrochemical industries
Oil & gas transmission
Food processing
Chemical plants
Power generation systems
Pipeline networks
General industrial piping
Their stability and strength make them a dependable choice across multiple sectors.
Tolerance of DIN 2391 ST37 Steel Pipe
|
Standard
|
Grade
|
C
|
Si
|
Mn
|
P max
|
S max
|
|
DIN2391
|
St37
|
≤0.17
|
≤0.35
|
≥0.35
|
0.04
|
0.04
|
DIN 2391 ST37 Steel Pipe Chemical Composition
|
Standard
|
Grade
|
C
|
Si
|
Mn
|
P max
|
S max
|
|
DIN2391
|
St37
|
≤0.17
|
≤0.35
|
≥0.35
|
0.04
|
0.04
|
DIN 2391 ST37 Steel Pipe Mechanical Properties
|
|
Cold drawn(Mandatory)
|
Cold drawn(Soft)
|
Cold Drawn and Stress Release
|
Anneal
|
Normalizing
|
|
BK1）
|
BKW1）
|
(BKS)
|
(GBK)1）
|
(NBK)1）
|
|
Grade
|
Tensile
|
Elongation
|
Tensile
|
Elongation
|
Tensile
|
Yield point
|
Elongation
|
Tensile
|
Elongation
|
Tensile
|
Yield point
|
Elongation
|
|
N/mm2
|
%
|
N/mm2
|
%
|
N/mm2
|
N/mm2
|
%
|
N/mm2
|
%
|
N/mm2
|
N/mm2
|
%
|
|
St37
|
480
|
6
|
420
|
10
|
420
|
315
|
14
|
315
|
25
|
350~480
|
235
|
25
|
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