GB/T 714 Q420q bridge steel plate

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GB / T 714 Q420q bridge steel plate as a structural steel for bridge, it is necessary to have good welding performance and notch sensitivity and certain low temperature toughness. For bridge construction and the manufacture of bridge structu

GB / T 714 Q420q bridge steel plate as a structural steel for bridge, it is necessary to have good welding performance and notch sensitivity and certain low temperature toughness. For bridge construction and the manufacture of bridge structures.

Q420q Chemical composition(%):

Grade

Quality level

Unified digital code

Chemical composition%

C

Si

Mn

F

S

Als

No greater than

Q420q

C

L14203

≤0.18

≤0.50

1.20-1.60

0.035

0.035

-

Q420q

D

L14204

≤0.17

≤0.60

1.30-1.70

0.025

0.025

≥0.015

Q420q

E

L04205

≤0.17

≤0.60

1.30-1.70

0.02

0.015

≥0.015


Q420q Mechanical property:

Grade

Quality level

thickness mm

Yield point σsMPa

Sile strength σbMPa

Elongationδ5 %

V-type impact energy (longitudinal)

Temperature,℃

J

Aging,J

Not less than

Q420q

C

≤16

420

570

20

0

47

47

>16-35

410

550

19

>35-50

400

540

19

>50-100

390

530

19

D

≤16

420

570

20

-20

>16-35

410

550

19

>35-50

400

540

19

>50-100

390

530

19

E

≤16

420

570

20

-40

>16-35

410

550

19

>35-50

400

540

19

>50-100

390

530

19


Delivery condition of Q420q steel plate: AR, CR, NR, TMCP, N, T, N+T, Q+T


Q420q steel plate dimension (T*W*L) mm: 4.5-250*1600-4100*L


Our mill has three production lines: 

2500 production line in the conventional production specifications, the annual output of 1.6 million tons

Product thickness mm

Product width mm

Product length mm

Total length of steel plate

Weight of steel plate (tons)

6-≤7

1800-2200

5200-13000

28000

2.2-3.0

>7-30

1600-2300

5200-13000

≤32000

2.2-4.55

 

3500 production line in the conventional production specifications, the annual output of 2 million tons

Product thickness mm

Product width mm

Product length mm

Total length of steel plate

Weight of steel plate (tons)

10-50

2000-4100

5500-15000

≤36000

5.16-7.47/8.34-12.12

≥50-80

2250-3050

5500-15000

≤36000

8.34-12.12

 

4300 production line in the conventional production specifications, the annual output of 1.8 million tons

Product thickness mm

Product width mm

Product length mm

Total length of steel plate

Weight of steel plate (tons)

6-120

≥1500-4100

5500-15000

≤43000

22 max

120-300

≥1500-4100

5500-15000

≤20000

44 max

 

1700 hot-rolled coil, the annual output 3.5 million tons

Product thickness mm

Product width mm

Volume of steel plate (tons)

1.8-19

≥900-1550

27.8 max


The customers of GB / T 714 Q420q bridge steel plate are mainly concentrated in Europe, the Region of the Americas and Middle East. Shanghai Katalor Enterprises Co., Ltd. have a large number of GB / T 714 Q420q bridge steel plate stock in all sizes. If you want to know more details of our stock list and any information about GB / T 714 Q420q bridge steel plate, please feel free to contact us.

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