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structure tube

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 Seamless pipe for structure

 

structure tube

 

Seamless steel pipe for structures

●Standard

GB/T8162, ASTM A53,ASTM A106,ASTMA519,ASTMA252,DIN1629,JIS G 3441,EN 10210-1  

●Business type

Manufacture

●Size

OD 12MM-720MM* WT 1.5MM-40MM, Length: SRL, DRL, fixed length

●Application

Seamless steel pipes for common structures such as buildings, traffic, oil development, vessels,equipment and mechanical structures.

●Size Tolerances

Standard

OD Tolerance

WT Tolerance

GB/T 8162

D<50mm

±0.50mm

S<4mm

±12.5%

D≥50mm

±1%

4-20mm

+15/-12.5%

S≥20mm

±12.5%

DIN1629

D<50mm

±0.50mm

S2Sn

+15/-10%

D≥50mm

±1%

2SnS4Sn

+12.5/-10%

S4Sn

±9%

ASTM A53

D≤48.3mm

±0.40mm

±12.5%

D≥60.3mm

±1%

ASTM A106

D≤48.3mm

±0.40mm

±12.5%

48.3mm<D≤114.3mm

±0.79mm

114.3mm<D≤219.1mm

+1.59-0.79mm

219.1mm<D≤457mm

+2.38-0.79mm

457mm<D≤660.4mm

+3.18-0.79mm

 

●Mechanical properties

Standard

Steel

Tensile Strength(MPa)

Yield strength(MPa)

Elongation (%)

<16mm

16-30mm

GB/T 8162

10

335

205

195

24

20

390

245

235

20

35

510

305

295

17

45

590

335

325

14

16Mn

490-665

325

21

DIN 1629

 

<16mm

>16mm

 

ST35

345-460

235

225

25

ST45

440-550

255

245

21

ST55

540-645

295

285

17

ST52

490-630

355

345

22

CK45

590-730

335

325

14

ASTM A53

A

330

205

 As per table

B

415

240

ASTM A106

A

330

205

 As per table

B

415

240

C

485

275

 

●Chemical composition: (%):

Standard

Steel

C

Si

Mn

P≤

S≤

Cu≤

Ni≤

Cr≤

Mo≤

V≤

GB/T 8162

10

0.07-0.14

0.17-0.37

0.35-0.65

0.035

0.035

0.25

0.25

0.15

/

/

20

0.17-0.24

0.17-0.37

0.35-0.65

0.035

0.035

0.25

0.25

0.25

/

/

35

0.32-0.39

0.17-0.37

0.50-0.80

0.035

0.035

0.25

0.25

0.25

/

/

45

0.42-0.50

0.17-0.37

0.50-0.80

0.035

0.035

0.25

0.30

0.25

/

/

16Mn

0.12-0.20

0.20-0.55

1.20-1.60

0.045

0.045

0.25

0.25

0.25

/

/

DIN 1629

St35

≤0.18

0.15-0.35

0.35-0.65

0.035

0.035

0.25

0.25

0.25

/

/

St45

≤0.25

0.15-0.35

0.50-0.80

0.035

0.035

0.25

0.25

0.25

/

/

St55

0.33-0.41

0.15-0.35

0.50-0.80

0.035

0.035

0.25

0.25

0.25

/

/

St52

≤0.20

≤0.55

≤1.50

0.035

0.035

0.25

0.25

0.25

/

/

CK45

0.42-0.50

0.17-0.37

0.50-0.80

0.035

0.035

0.25

0.25

0.25

/

/

ASTM A53

A

≤0.25

/

≤0.95

0.05

0.045

0.40

0.40

0.40

0.15

0.08

B

≤0.30

/

≤1.20

0.05

0.06

0.40

0.40

0.40

0.15

0.08

ASTM A106

A

≤0.25

≥0.10

0.27-0.93

0.035

0.035

0.40

0.40

0.40

0.15

0.08

B

≤0.30

≥0.10

0.29-1.06

0.035

0.035

0.40

0.40

0.40

0.15

0.08

C

≤0.35

≥0.10

0.29-1.06

0.035

0.035

0.40

0.40

0.40

0.15

0.08

 structure pipe

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