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Shandong Witsteel International Trading Co., Ltd.Shandong Witsteel International Trading Co., Ltd.

Seamless Steel Tube For Structural Purposes

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Seamless Steel Tube For Structural Purposes

  • FOB Price: 450-1000 USD / ton
  • Supply Capability: 10000 ton / month
  • Port: Tianjin/Qingdao/Shanghai Port
  • Delivery: 15-30days
  • Packaging: Bundles/Lifting belts/Plastic caps/Waterproof cloth/customers requirment;

Details

PRODUCT DETAILS

COMMODITY

Seamless Steel Tube For Structural Purposes

STANDARD

GB 8162-2008

STEEL GRADE

20#, 45#,16Mn, 20Mn, 25Mn, 40Mn, 45MnB, Q235, Q275, Q345, Q390, Q420, Q460, 20Cr, 30Cr, 35Cr, 40Cr, 50Cr, 27SiMn, Cr5Mo, 12CrMo, 15CrMo, 20CrMo, 30CrMo, 30CrMoA, 35CrMo, 35CrMoA, 40CrMo,42CrMo,42CrMoA,12CrMoV,20CrMn,20CrMnSi,30CrMnSi,30CrMnSiA,35CrMnSi,35CrMnSiA, 20CrMnTi, 30CrMnTi, 21CrMo910

TECHNIQUE

Hot rolled ; Cold Drawn;

OUTER DIAMETER

16mm-630mm

WALL THICKNESS

1.2mm-35mm

LENGTH

Random length or according to customers requirements

DELIVERY CONDITION

Hot rolled condition delivery

TOLERANCE

According to GB 8162-2008 requirements

PACKING

Standard seaworthy packing or according to the requirement

APPLICATION

For manufacture of pipelines, vessels, equipment, pipe fittings,and steel structures.

TRADE TERMS

FOB,CFR,CIF

PAYMENT TERM

30% T/T in advance,balanced with the copy of B/L or 100% L/C at sight 

CHEMICAL  COMPOSITION

Chemical Composition(%)

Steel Grade

Elements Content% Max


C

Si

Mn

P

S

Cr

Ni

Cu

 Mo

Nb

V

Ti

20#

0.07-0.2

0.17-0.37

0.35-0.65

0.035

0.035

≤0.25

0.25

0.25

-

-

-

-

45#

0.42-0.5

0.17-0.37

0.50-0.80

0.035

0.035

≤0.25

0.3

0.25

-

-

-

-

16Mn

0.12-0.2

0.20-0.60

1.20-1.60

0.03

0.03

≤0.30

0.3

0.2

-

-

-

-

20Mn

0.17-0.24

0.17-0.37

0.70-1.00

0.035

0.035

≤0.25

0.25

0.25

-

-

-

-

25Mn

0.22-0.29

0.17-0.37

0.70-1.00

0.035

0.035

≤0.25

0.3

0.25

-

-

-

-

40Mn

0.37-0.44

0.17-0.37

0.70-1.00

0.035

0.035

≤0.25

0.3

0.25

-

-

-

-

45MnB

0.42-0.49

0.17-0.37

1.10-1.40

0.035

0.035

≤0.03

0.3

0.03

≤0.15

-

-

-

Q235

0.14-0.22

≤0.30

0.30-0.65

0.045

0.05

≤0.03

0.03

0.03

-

-

-

-

Q275

0.28-0.38

≤0.35

0.50-0.80

0.045

0.05

-

-

-

-

-

-

-

Q345

≤0.20

≤0.50

≤1.70

0.035

0.035

≤0.30

0.012

-

≤0.10

≤0.07

≤0.15

≤0.20

Q390

≤0.20

≤0.55

1.00-1.60

0.04

0.04

≤0.30

0.7

-

-

0.015-0.06

0.02-0.2

0.02-0.2

Q420

≤0.20

≤0.55

1.00-1.70

0.04

0.04

≤0.40

0.7

-

-

0.015-0.06

0.02-0.2

0.02-0.2

Q460

≤0.20

≤0.55

1.00-1.70

0.035

0.035

≤0.70

0.7

-

-

0.015-0.06

0.02-0.2

0.02-0.2

20Cr

0.18-0.24

0.17-0.37

0.50-0.80

0.035

0.035

0.7-1.0

0.03

0.03

≤0.015

-

-

-

30Cr

0.27-0.34

0.17-0.37

0.50-0.80

0.035

0.035

0.8-1.1

0.03

0.03

≤0.015

-

-

-

35Cr

0.27-0.34

0.17-0.37

0.50-0.80

0.035

0.035

0.8-1.1

0.03

0.03

-

-

-

-

40Cr

0.37-0.44

0.17-0.37

0.50-0.80

0.035

0.035

0.8-1.1

0.3

0.03

-

-

-

-

50Cr

0.47-0.54

0.17-0.37

0.50-0.80

0.035

0.035

0.8-1.1

0.03

0.03

-

-

-

-

27SiMn

0.24-0.32

1.10-1.40

1.10-1.40

0.035

0.035

≤0.30

0.3

0.3

≤0.15

-

-

-

Cr5Mo

≤0.15

≤0.50

0.3-0.6

0.025

0.025

4.-6.0

-

-

0.45-0.65

-

-

-

12CrMo

0.08-0.15

0.17-0.37

0.40-0.70

0.035

0.035

0.4-0.7

0.03

0.03

0.40-0.55

-

-

-

15CrMo

0.12-0.18

0.17-0.37

0.40-0.70

0.035

0.035

0.8-1.1

0.3

-

-

-

-

-

20CrMo

0.17-0.24

0.17-0.37

0.40-0.70

0.035

0.035

0.8-1.1

0.25

0.3

0.15-0.25

-

-

-

30CrMo

0.26-0.34

0.17-0.37

0.40-0.70

0.035

0.035

0.8-1.1

0.03

0.03

0.15-0.25

-

-

-

30CrMoA

0.26-0.34

0.17-0.37

0.40-0.70

0.025

0.025

0.8-1.1

0.03

0.025

0.15-0.25

-

-

-

35CrMo

0.32-0.40

0.17-0.37

0.40-0.70

0.035

0.035

0.8-1.1

0.3

0.3

0.15-0.25

-

-

-

35CrMoA

0.32-0.40

0.17-0.37

0.40-0.70

0.025

0.025

0.8-1.1

0.3

0.3

0.15-0.25

-

-

-

40CrMo

0.35-0.45

0.15-0.40

0.40-0.70

0.035

0.035

1.0-1.5

-

-

0.15-0.25

-

-

-

42CrMo

0.38-0.45

0.17-0.37

0.50-0.80

0.035

0.035

0.9-1.2

0.03

0.03

0.15-0.25

-

-

-

42CrMoA

0.38-0.45

0.17-0.37

0.50-0.80

-

-

0.9-1.2

-

-

0.15-0.25

-

-

-

12CrMoV

0.08-0.15

0.17-0.37

0.40-0.70

0.035

0.035

0.3-0.6

0.03

0.03

0.25-0.35

-

0.15-0.3

-

20CrMn

0.17-0.23

0.17-0.37

0.90-1.20

0.035

0.035

0.9-1.2

0.03

0.03

-

-

-

-

20CrMnSi

0.17-0.23

0.90-1.20

0.80-1.10

0.035

0.035

0.8-1.1

0.03

0.03

-

-

-

-

30CrMnSi

0.27-0.34

0.90-1.20

0.80-1.10

0.035

0.035

0.8-1.1

0.03

0.025

-

-

-

-

30CrMnSiA

0.28-0.34

0.90-1.20

0.80-1.10

0.025

0.025

0.8-1.1

0.03

0.025

-

-

-

-

35CrMnSi

0.32-0.39

1.10-1.40

0.80-1.10

0.025

0.025

1.1-1.4

0.03

0.025

-

-

-

-

35CrMnSiA

0.28-0.34

0.90-1.20

0.80-1.10

0.025

0.025

1.1-1.4

0.03

0.025

-

-

-

-

20CrMnTi

0.17-0.23

0.17-0.37

0.80-1.10

0.035

0.035

1.0-1.3

0.03

0.03

-

-

-

0.04-0.1

30CrMnTi

0.24-0.32

0.17-0.37

0.80-1.10

0.035

0.035

1.0-1.3

0.03

0.03

-

-

-

0.04-0.1

21CrMo910

0.08-0.15

≤0.50

0.40-0.70

0.03

0.03

2.0-2.5

-

-

0.90-1.20

-

-

-

MECHANICAL PROPERTIES

Mechanical Properties

Steel Grade

Min.Tensile strength     (σb/Mpa)

Min.yiled strength(σs/Mpa)   T(Thickness) in mm

Min. Elongation  A/%

        Min.Impact energy(J)            at longitudinal direction

Hardness (HB)

≤16

>16-30

>30

20#

≥355

≥205

≥195

≥185

≥24

-

≤156

45#

≥410

≥245

≥235

≥225

≥20

≥39

≤156

16Mn

≥490

≥320

≥310

≥300

≥21

≥47

≤170

20Mn

≥450

≥275

≥265

≥255

≥20

≥47

≤197

25Mn

≥490

≥295

≥285

≥275

≥18

≥71

≤207

40Mn

≥590

≥355

≥345

≥335

≥17

≥47

≤229

45MnB

≥1030

≥835

≥825

≥815

≥9

≥47

≤217

Q235

375-460

≥235

≥225

≥215

≥26

≥27

≤165

Q275

490-630

≥275

≥265

≥255

≥20

≥27

≤217

Q345

490-675

≥345

≥325

≥295

≥21

≥27

≤170

Q390

490-650

≥390

≥370

≥350

≥19

≥34

≤150

Q420

520-680

≥420

≥400

 ≥380

≥18

≥34

-

Q460

550-720

≥460

≥440

≥420

≥17

≥34

-

20Cr

≥835

≥540

≥10

≥47

≤179

30Cr

≥885

≥685

≥11

≥47

≤187

35Cr

≥885

≥685

≥11

≥47

≤187

40Cr

≥980

≥785

≥9

≥45

≤207

50Cr

≥1080

≥930

≥9

≥39

≤229

27SiMn

≥980

≥835

≥12

≥39

≤217

Cr5Mo

≥590

≥390

≥18

-

≤200

12CrMo

≥410

≥265

≥24

≥110

≤179

15CrMo

440-640

≥235

≥21

-

≤197

20CrMo

≥885

≥685

≥12

≥78

≤197

30CrMo

≥930

≥785

≥12

≥63

≤229

30CrMoA

≥930

≥735

≥12

≥71

≤229

35CrMo

≥985

≥835

≥12

≥63

≤229

35CrMoA

≥985

≥835

≥12

≥63

≤229

40CrMo

≥1080

≥930

≥12

≥63

≤217

42CrMo

≥1080

≥930

≥12

≥63

≤217

42CrMoA

≥1080

≥930

≥12

≥63

≤217

12CrMoV

≥440

≥225

≥22

≥78

≤241

20CrMn

≥930

≥735

≥10

≥47

≤187

20CrMnSi

≥785

≥635

≥12

≥55

≤207

30CrMnSi

≥1100

≥800

≥10

≥50

≤229

30CrMnSiA

≥1080

≥835

≥10

≥39

≤229

35CrMnSi

≥1620

≥1275

≥9

≥31

≤229

35CrMnSiA

≥1080

≥835

≥10

≥39

≤229

20CrMnTi

≥1080

≥835

≥10

≥55

≤217

30CrMnTi

≥1470

-

≥9

≥47

≤229

21CrMo910

450-600

≥280

≥18

-

-