EN 10219

EN 10219

EN 10219 specifies cold-formed welded structural pipes made of non-alloy and fine grain steels.

This section of the European Standard specifies the technical delivery requirements for cold-formed welded structural hollow sections in circular, square, or rectangular shapes. It applies to structural hollow sections created cold without later heat treatment.

EN 10219-1:2006 is a European Standard with the status of a British Standard. It is made up of the following components:

− Part 1: Technical delivery conditions

− Part 2: Tolerances, dimensions, and sectional properties

PRODUCT FEATURES

The Classified Steels of EN10219

The steels are classified in EN 10219 as follows similarly to the classification provided in the EN 10210 standard:

  1. Non-alloy steels
  2. Fine-grain steels

Dimensions and Sizes of EN10219 Pipe

NPS

O. D.

Nominal Wall Thickness

DN

Inch

mm

SCH5S

SCH10S

SCH10

SCH20

SCH30

SCH40

SCH60

SCH80

SCH100

SCH120

SCH140

SCH160

STD

XS

XXS

50

2″

60.3

1.65

2.77

3.91

5.54

8.74

3.91

5.54

11.07

65

2-1/2″

73

2.11

3.05

5.16

7.01

9.53

5.16

7.01

14.02

80

3″

88.9

2.11

3.05

5.49

7.62

11.13

5.49

7.52

15.24

90

3-1/2″

101.6

2.11

3.05

5.74

8.08

5.74

8.08

100

4″

114.3

2.11

3.05

6.02

8.58

11.13

13.49

6.02

8.56

17.12

125

5″

141.3

2.77

3.4

6.55

9.53

12.7

15.88

6.55

9.53

18.05

150

6″

168.3

2.77

3.4

7.11

10.97

14.27

18.26

7.11

10.97

21.95

200

8″

219.1

2.77

3.76

6.35

7.04

8.18

10.31

12.7

15.09

18.26

20.62

23.01

8.18

12.7

22.23

250

10″

273.1

3.4

4.19

6.35

7.8

9.27

12.7

15.09

18.26

21.44

25.4

28.58

9.27

12.7

25.4

300

12″

323.9

3.96

4.57

6.35

8.38

10.31

14.27

17.48

21.44

25.4

28.58

33.32

9.53

12.7

25.4

350

14″

355.5

3.96

4.78

6.35

7.92

9.53

11.13

15.09

19.05

23.83

27.79

31.75

35.71

9.53

12.7

400

16″

406.4

4.19

4.78

6.35

7.92

9.53

12.7

16.66

21.44

26.19

30.96

36.53

40.49

9.53

12.7

450

18″

457.2

4.19

4.78

6.35

7.92

11.13

14.27

19.05

23.83

39.36

34.93

39.67

45.24

500

20″

508

4.78

5.54

6.35

9.53

12.7

15.09

20.62

26.19

32.54

38.1

44.45

50.01

550

22″

558.8

4.78

5.54

6.35

9.53

12.7

22.23

28.58

34.93

41.28

47.63

53.98

600

24″

609.6

5.54

6.35

6.35

9.53

14.27

17.48

24.61

30.96

38.89

46.02

52.37

59.54

Steel Grade of EN 10219

– Designation for Non-alloy Steel Structural Hollow Sections:

  • The number of this European Standard (EN 10219 specification);
  • The capital letter S for structural steel;
  • The indication of the minimum specified yield strength for thickness ≤16mm is expressed in N/mm2;
  • The capital letters JR for the qualities with specified impact properties at room temperature;
  • The capital letter J and a number 0 or 2 for the qualities with specified impact properties at 0℃ and -20℃ respectively;
  • The capital letter H indicates hollow sections

Example with EN 10219 S275JOH:

  • EN 10219 – Number of the European Standard
  • S – Structural steel
  • 275 – Minimum yield strength (N/mm2) for thickness not greater than 16mm
  • J0 – Impact properties, 27J minimum at 0℃
  • H – Hollow section

Weldability of EN 10219 Pipe

Weldable steels are specified in this European standard. EN 1011-1 and EN 1011-2 specify the main standards for welding products under this European standard.

When welding these products, the greatest danger is the development of cold cracking in the welded zone as the product thickness, strength level, and CEV rise. Cold cracking is a result of a combination of the following factors:

  • elevated diffusible hydrogen levels in the weld metal;
  • a brittle structure in the heat-affected zone;
  • and large tensile stress concentrations in the welded joint

Mechanical Properties of EN 10219 Pipe

Material

Min Yield Strength 
(N/mm2)

Tensile Strength (N/mm2)

Min. Elongation (%)

Thickness in mm

t<16

16>t<40

t<3

3>t<40

t<40

S235JRH

235

225

360-510

340-470

24

S275J0H

275

265

430-580

410-560

20

S275J2H

275

265

430-580

410-560

20

S355J0H

355

345

510-680

490-630

20

S355J2H

355

345

510-680

490-630

20

Manufacturing Tolerances of EN 10219 Pipe

Characteristic

Round Hollow Sections

Square and Rectangular Hollow Sections

Outside Dimension

± 1% with min ± 0.5mm and max ± 10mm

± 1% with min of ± 0.5mm

Thickness (T)

T≤5mm: ±10%

T≤5mm: ±10%

T>5mm: ± 0.5mm

T>5mm: ± 0.5mm

Out-of-Roundness

2%

Convexity

Max .8% with min 0.5mm

Squareness of side

90° ± 1°

External Corner Profile

T≤6mm: 1.6T to 2.4T

6<T≤10mm: 2.0T to 3.0T

T,10: 2.4T to 3.6T

Twist

2mm plus 0.5mm/m

Straightness

0.2% of total

0.15% of total

Mass

±6% on individual length

Inspection and Testing of EN 10219 Hollow Sections of Non-alloy Steels

EN 10219 is tensile tested according to EN 10002-1 and Charpy impact tested according to EN 10045-1.

Inspection Requirements

Inspection Frequency

Type of test

Non-specific

inspection

Specific inspection

Mandatory

tests

1

Cast analysis

One result per delivery

item

One per cast

2

Tensile test

One result per delivery

item

One per test unit ( b)

3

Impact test for

Qualities J2 and K2 only

Not applicable

One set per test unit (b)

4

Surface condition

and dimensions

5

NDT of the weld

Not applicable

All products, full length

Optional

tests

6

Product analysis

Not applicable

One per test unit a

7

Cast analysis

additional elements

Not applicable

See Option 1.2

8

Impact test for

qualities JR and J0

Not applicable

One set per test unit (b)

b – Longitudinal or transverse samples at the discretion of the manufacturer.

INSPECTION AND TESTING OF EN 10219 HOLLOW SECTIONS OF Fine-grain Steels

Inspection Requirements

Inspection Frequency

Type of test

Specific inspection

Mandatory

tests

1

Cast analysis

One per cast

2

Tensile test

One per test unitF( b)

3

Impact test

One set per test unit (b)

4

Surface condition

and dimensions

 

5

NDT of the weld

All products, full length

Optional

tests

6

Product analysis

One per test unit a

b – Longitudinal or transverse samples at the discretion of the manufacturer.

Marking of EN 10219

Each of the square and rectangular hollow sections shall be marked with the following information.

  • Specification designation
  • Grade letter
  • Dimension
  • Heat number
  • Other customers requirement

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