سلس انابيب الصلب والكربون الصلب المنغنيز الكربون

Steel Grade

Chemical composition

C

Si

Mn

S

P

Cr

Mo

Ni

Cu

Total

320

≤0.16

≤0.35

0.40-0.70

≤0.035

≤0.035

≤0.25

≤0.10

≤0.30

≤0.30

≤0.70

360

≤0.17

≤0.35

0.40-0.80

≤0.035

≤0.035

≤0.25

≤0.10

≤0.30

≤0.30

≤0.70

410

≤0.21

≤0.35

0.40-1.20

≤0.035

≤0.035

≤0.25

≤0.10

≤0.30

≤0.30

≤0.70

460

≤0.22

≤0.35

0.80-1.40

≤0.035

≤0.035

≤0.25

≤0.10

≤0.30

≤0.30

≤0.70

490

≤0.23

≤0.35

0.80-1.50

≤0.035

≤0.035

≤0.25

≤0.10

≤0.30

≤0.30

≤0.70

Steel Grade

Tensile Strength

MPa

Yield Strength

MPa

Elongation

%

320

320-440

≥195

≥25

360

360-480

≥215

≥24

410

410-530

≥235

≥22

460

460-580

≥265

≥21

490

490-610

≥285

≥21

Production Method

Size(mm)

Tolerance

Hot Rolling(Extrusion)

OD

≤159

±1.0%(min.±0.50mm)

＞159

±1.25%

WT

≤20

+15%(min.+0.45mm)

-10%(min. -0.30mm)

＞20

±10%

D≥351

±15%

Cold Drawn

OD

≤30

±0.20mm

30~50

±0.30mm

＞50

±0.8%

WT

1.5~3

+12.5%

-10%

＞3.0

±10%