Spiral steel pipe species and its mechanical properties and chemical composition table

Steel type

Mechanical properties

chemical composition

Yield Strength

tensile strength

Elongation

C

Si

Mn

S

P

MPa

Kg/mm2

MPa

Kg/mm2

Min

no greater than

no greater than

no greater than

Q215A

Q215B

215

twenty two

335-410

34-42

31

0.09-0.15

0.03

0.25-0.55

0.050

0.045

0.045

Q235A

Q235B

Q235C

Q235D

235

twenty four

375-460

38-47

26

0.14-0.22

0.12-0.20

≤0.18

≤0.17

0.30

0.30-0.65

0.30-0.70

0.35-0.80

0.35-0.80

0.50

0.45

0.40

0.035

0.045

0.045

0.040

0.035

16Mn(Q345B)

345

35

510-600

51.60

twenty two

0.12-0.20

0.20-0.55

1.2-1.6

0.045

0.045

X42

289

29.5

413

42.1

0.28

-

1.25

0.030

0.030

X52

358

36.5

455

46.4

0.30

-

1.35

0.030

0.030

X56

386

39.4

489

49.9

0.26

-

1.35

0.030

0.030

X60

413

42.1

517

52.7

0.26

-

1.35

0.030

0.030

X65

448

45.7

530

54.0

0.26

-

1.40

0.030

0.030

X70

482

49.2

565

57.6

0.26

-

1.40

0.030

0.030

L245

245

415

twenty one

0.26

1.15

0.030

0.030

L290

290

415

twenty one

0.28

1.25

0.030

0.030

L360

360

460

19

0.3

1.25

0.030

0.030