Flat

Flats have a rectangular cross-section with straight and flat edges. They come in various widths, thicknesses, and lengths, and they are typically produced from hot-rolled steel. The choice of material and dimensions depends on the specific engineering requirements and the intended use of the flats.

Flats shall be designated by the width(mm) & the thickness (mm). Dimensions and mass of Hot rolled steel flats are given below:

Designation Mass (Kg/m) Dimensions(mm)
(mm) 3 4 5 6 8 10 12 15 20 25
10 0.236 0.314 0.393 0.471 - - - - - -
16 0.377 0.502 0.628 0.754 1.000 1.100 1.510 - - -
20 0.471 0.628 0.785 0.942 1.260 1.570 1.880 2.300 - -
25 0.589 0.785 0.981 1.180 1.570 1.960 2.360 2.940 - -
30 0.707 0.942 1.180 1.410 1.880 2.360 2.830 3.530 4.710 -
35 0.824 1.100 1.370 1.650 2.200 2.750 3.300 4.120 5.500 -
40 0.942 1.260 1.570 1.880 2.510 3.140 3.770 4.710 6.280 7.850
45 1.060 1.410 1.770 2.120 2.830 3.530 4.240 5.300 7.070 8.830
50 1.180 1.570 1.960 2.360 3.140 3.930 4.710 5.890 7.850 9.810
60 1.410 1.880 2.360 2.830 3.770 4.710 5.650 7.070 9.420 11.800
65 - 2.040 2.550 3.060 4.080 5.100 6.120 7.650 10.200 12.800
70 - 2.200 2.750 3.300 4.400 5.500 6.590 8.240 11.000 13.700
75 - 2.360 2.940 3.530 4.710 5.890 7.070 8.830 11.800 14.700
80 - 2.510 3.140 3.770 5.020 6.280 7.540 9.420 12.600 15.700
90 - - 3.530 4.240 5.650 7.070 8.480 10.600 14.100 17.700
100 - - 3.930 4.710 6.280 7.850 9.420 11.800 15.700 19.600
120 - - - 5.650 7.540 8.420 11.300 14.100 18.800 23.600
130 - - - 6.120 8.160 9.200 12.200 15.300 20.400 25.600
140 - - - 6.590 8.790 1.1000 13.200 15.500 22.000 27.500
150 - - - 7.070 9.420 1.1800 14.100 17.700 23.600 29.400


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