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Q420FTC

≤0.20

1.00-1.70

≤0.025

≤0.015

≤0.50

≤0.060

≤0.15

≤0.050

≤0.20

≤0.30

≤0.50

≤0.30

≥0.015

≤0.012

Q420FTD

≤0.20

1.00-1.70

≤0.025

≤0.015

≤0.50

≤0.060

≤0.15

≤0.050

≤0.20

≤0.30

≤0.50

≤0.30

≥0.015

≤0.012

Q420FTE

≤0.20

1.00-1.70

≤0.020

≤0.010

≤0.50

≤0.060

≤0.15

≤0.050

≤0.20

≤0.30

≤0.50

≤0.30

≥0.015

≤0.010

Q420FTF

≤0.20

1.00-1.70

≤0.020

≤0.010

≤0.50

≤0.060

≤0.15

≤0.050

≤0.20

≤0.30

≤0.50

≤0.30

≥0.015

≤0.010

鋼板厚度/mm

鋼板厚度/mm

≤16

16-40

40-100

≤16

16-100

Q420FTC

Q420FTD

420

400

390

520-680

19

47

d=2a

d=3a

Q420FTE、Q420FTF

420

400

390

520-680

19

34

d=2a

d=3a