Automobile SAW 4 SAW 5a Submerged Arc Welded Pipe for Mechanical Applications

Designation

  Chemical Compositions( ladle analysis)

Mechanical properties

C

Si

Mn

P

S

Re

Rm

A

max.

max.

max.

max.

max.

min.

min.

min.

%

%

%

%

%

N/mm2

N/mm2

%

SAW 4

0.25

0.35

1.20

0.050

0.050

235

410

22

SAW 5a

0.23

0.50

1.50

0.050

0.050

340

490

20

NOTE  Welding of tubes of these grades does not require special techniques but care should be taken and welding should be carried out in accordance with the guidance given in the appropriate British Standard for welding,e.g. BS 5135.aGrain refining elements may be added to this grade at the option of the manufacturer. 

Dimensions of submerged arc welded steel tubes

Outside diameter

Thicknesses

Minimum thickness

Thicknesses in common usage

Maximum thickness

mm

mm

mm

mm

mm

mm

mm

508

6.3

8.0

10

12.5

20

559

6.3

8.0

10

12.5

20

610

6.3

8.0

10

12.5

16

32

660

6.3

8.0

10

12.5

16

32

711

7.1

8.0

10

12.5

16

32

762

7.1

10

12.5

16

32

813

7.1

10

12.5

16

20

32

864

7.1

10

12.5

16

20

32