[[TitleIndustry]]

DIN 2448 standard seamless pipes tubes

Date: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

DIN_2448_standard_seamless_pipes_tubes

Mechanical properties







Pipe types

Steel grades

Upper yield limit Re min for wall thickness in mm min

Tensile strength Rm MPa

Elongation A% min



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


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)







Steel grades

Weld deoxidation type ( semi-killed steel only) RR special killed



C%

P%

S%

N%

Addition of nitrogen binding elements e.g. min 0,020% total Al

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


No

Type




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


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