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優(yōu)質結構鋼冷拉扁鋼(YB/T037-1993)

(1)尺寸規(guī)格。

扁鋼的尺寸規(guī)格

扁鋼寬度 /mm在下列厚度時扁鋼的理論質量/(kg/m)
5678910111214151618202530
8O.310.380.44------------
lO0.39O.470.55O.63O.71----------
12O.47O.55O.660.750.850.941.04--------
13O.51O.6lO.710.82O.921.021.12--------
140.55O.660.770.880.991.101.2l1.32-------
150.59O.710.82O.941.061.181.291.41-------
16O.630.75O.881.001.131.261.381.5l1.76------
180.7lO.85O.991.131.271.411.551.701.962.122.26----
200.78O.941.101.261.411.571.731.882.282.362.512.63---
220.861.041.2l1.381.551.731.902.072.422.692.763.113.45--
24O.941.131.321.5l1.691.882.072.262.642.833.013.393.77--

扁鋼寬度 /mm在下列厚度時扁鋼的理論質量/(kg/m)
56789101l1214151618202530
25O.981.181.371.571.771.962.162.362.752.943.143.533.92-
281.101.321.541.761.982.202.422.643.083.283.523.964.405.49-
301.181.411.651.882.122.362.592.833.303.533.774.244.7l5.89-
32-1.5l1.762.012.262.512.763.Ol3.523.774.025.025.026.287.54
35-1.651.922.192.472.753.023.293.854.124.394.955.496.878.24
36-1.701.982.262.542.833.113.393.964.244.525.095.657.068.48
38--2.092.392.682.983.283.584.184.474.775.375.977.468.95
40--2.202.5l2.833.143.453.774.404.715.025.656.207.859.42
45---2.833.183.533.894.244.955.295.656.367.068.83lO.60
50----3.533.924.324.7l5.505.896.287.067.859.8111.78

注:表中的理論質量是按相對密度為7.85g/cm³計算的。

(2)允許偏差。

扁鋼的允許偏差 (mm)

鋼厚度及寬度允許偏差級別
10(h10)11(h11)12(h12)
允許偏差
≤6
O
0.048

0
-0.075

0
-0.12
>6~lO
O
-0.058

0
-0.090

0
-0.15
>10~18
0
-0.070

0
-0.110

O
-O.18
>18~30
0
-0.084

0
-0.130

O
-O.21
>30~50
O
-O.100

O
-0.160

0
-0.25

0
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