DIN 2448 standard seamless pipes tubes
Jun 05, 2019
DIN 2448 is standard for Seamless Steel Pipes and Tubes; Dimensions, Conventional Masses per Unit Length.
Thanks to their variety of types and sizes, they can also be used for general purposes. The pipes are manufactured through hot rolling or cold drawing.
The pipes are used almost in all fields of industry, standard reference as follows:
DIN 1629
DIN 17175
Mechanical properties |
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Pipe types | Steel grades | Upper yield limit Re min for wall thickness in mm min | Tensile strength Rm MPa | Elongation A% min |
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ROUND SEAMLESS CARBON STEEL PIPES FOR SPECIAL REQUIREMENTS St37.0, St44.0, St52.0 according to DIN 1629 | 16 | 16 40 | 40 65 | 1 | t |
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St37.0 | 235 | 225 | 215 | 350-480 | 25 | 23 |
St44.0 | 275 | 265 | 255 | 420-550 | 21 | 19 |
St52.0 | 355 | 345 | 335 | 50-650 | 21 | 19 |
CHEMICAL COMPOSITION (LADLE ANALYSIS) |
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Steel grades | Weld deoxidation type ( semi-killed steel only) RR special killed
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St37.0 | R | 0,17 | 0,040 | 0,040 | 0,009 | - |
St44.0 | R | 0,21 | 0,040 | 0,040 | 0,009 | - |
St52.0 | RR | 0,22 | 0,040 | 0,035 | - | YES |
Tests | Test scope | Test execution status | Material test certification type |
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No | Type |
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1 | Tensile testing | 1 pipe from the batch 1 try | To be negotiated | DIN 50049 3.1.A OR DIN 50049 3.1.B OR DIN 50049 3.1 C |
2 | Ring testing | From one pipe end for testing according to 1 for wall thickness of 40mm, 1 try | To be negotiated | DIN 50049 3.1.A OR DIN 50049 3.1.B OR DIN 50049 3.1 C |
3 | Tightness testing | All pipes | Manufacturer | DIN 50049 2.1 |
4 | Surface inspection | All pipes | To be negotiated | DIN 50049 3.1.A OR DIN 50049 3.1.B OR DIN 50049 3.1 C |
5 | Dimensional testing | All pipes | To be negotiated | DIN 50049 3.1.A OR DIN 50049 3.1.B OR DIN 50049 3.1 C |
6 | Check analysis | After negotiation | Manufacturer | DIN 50049 3.1.B |