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DIN 2391

Date:2022-03-31View:251Tags:Hollow section,OCTG pipe,LSAW steel pipe

DIN 2391-- cold Drawn or cold rolled steel tube is used in hydraulic & pneumatic cylinder, mechanical and Automotive engineer

Size: 6mm-350mm.

W.T.: 0.8mm-50mm.

Shape:Round.

Production type: Cold drawn or cold rolled.

Length: Single random length/ Double random length or as customer’s actual request max length is 10m.

Grade: St30 Si, St30 Al, St35, St45, St52.

OD(mm)　

Wall Thickness Unit(mm)

2

2.5

3

3.5

4

4.5

5

6

6.5-7

7.5-8

8.5-9

9.5-10

11

12

Φ25-Φ28

●

●

●

●

●

●









Φ32


●

●

●

●

●

●








Φ34-Φ36


●

●

●

●

●

●








Φ38


●

●

●

●

●

●








Φ40



●

●

●

●

●








Φ42



●

●

●

●

●








Φ45



●

●

●

●

●

●







Φ48-Φ60



●

●

●

●

●

●

●






Φ63.5




●

●

●

●

●

●

●





Φ68-Φ73





●

●

●

●

●

●





Φ76





●

●

●

●

●

●

●

●

●

●

Φ80





●

●

●

●

●

●

●

●

●

●

Φ83





●

●

●

●

●

●

●

●

●

●

Φ89





●

●

●

●

●

●

●

●

●

●

Φ95





●

●

●

●

●

●

●

●

●

●

Φ102





●

●

●

●

●

●

●

●

●

●

Φ108





●

●

●

●

●

●

●

●

●

●

Φ114






●

●

●

●

●

●

●

●

●

Φ121






●

●

●

●

●

●

●

●

●

Φ127






●

●

●

●

●

●

●

●

●

Φ133






●

●

●

●

●

●

●

●

●

Φ140







●

●

●

●

●

●

●

●

Φ146







●

●

●

●

●

●

●

●

Φ152







●

●

●

●

●

●

●

●

Φ159







●

●

●

●

●

●

●

●

Φ168







●

●

●

●

●

●

●

●


Mechanical Properties(Mpa)

Steel Grade

Minimum values for the delivery condition

Steel Name

Steel Number

BK

BKW

BKS

GBK

NBK

Rm

A %

Rm

A %

Rm

ReH

A %

Rm

A %

Rm

ReH

A %

Mpa

Mpa

Mpa

Mpa

Mpa

Mpa

Mpa

St 30 Si

1.0211

430

8

380

12

380

280

16

280

30

290 to 420

215

30

St 30 Al

1.0212

430

8

380

12

380

280

16

280

30

290 to 420

215

30

St 35

1.0308

480

6

420

10

420

315

14

315

25

340 to 470

235

25

St 45

1.0408

580

5

520

8

520

375

12

390

21

440 to 570

255

21

St 52

1.0580

640

4

580

7

580

420

10

490

22

490 to 630

355

22


Inspection and test list

Inspection or test types

Test frequency

Internal test

Acceptance test

Chemical analysis

M

M

Tensile testing

M

One per tested batch

Flattening test or extension test

M

Two per tested batch

Dimension verification

M

M

Visual inspection

M

M

NDT in order to identify leaks

Individual

Individual

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