热连轧45#钢板和钢带执行标准(GB/T2519-1981)
热连轧钢板和钢带的尺寸规格 (mm)
公称厚度 |
1.2,1.25,1.4,1.5,1.8,2.0,2.5,2.8,3.0,3.2,3.5,3.8,4.0,4.5,5.O,5.5,6.0,6.5,7.O,8.O,10,11,12,13 |
公称宽度 |
700,750,800,850,900,950,1000,1050,1100,1150,1200,1250,1300,1350,1400,1450,1500,1550 |
公称长度 |
2000,2500,3000,3500,4000,4500,5000,5500,6000,6500,7000,8000,9000,10000,11000,12000 |
(2)允许偏差见表5—18。
表5-18热连轧钢板和钢带的厚度偏差 (mm)
厚度 |
允许偏差 |
宽 度 |
≤1000 |
>1000~1200 |
>1200~1550 |
1.2~1.25 |
±O.13 |
±0.13 |
|
1.4 |
±O.15 |
±0.15 |
|
1.5 |
±O.15 |
±O.15 |
±O.15 |
1.6~1.8 |
±O.16 |
±0.16 |
±0.16 |
2.0 |
+O.15
-0.18 |
±O.18 |
士O.18 |
2.2 |
+O.15
-0.19 |
+O.19 |
±0.19 |
2.5 |
+O.16
-O.20 |
±0.20 |
±O.20 |
2.8~3.O |
+O.17
-0.22 |
±O.22 |
±O.22 |
3.2~3.5 |
+0.18
-0.25 |
±O.25 |
±0.25 |
3.8~4.O |
+0.20
-0.30 |
±0.30 |
±0.30· |
4.5~5.5 |
+0.30
-0.50 |
+0.40
-0.50 |
士0.50 |
6.O~7.O |
+O.30
-O.60 |
+0.40
-O.60 |
+O.40
-0.60 |
8.0~lO.O |
+0.20
-O.80 |
+0.30
-O.80 |
+0.30
-O.80 |
11.O~13.O |
+O.20
-0.80 |
+0.30
-0.80 |
+0.30
-O.80 | (3)用途用于建筑、桥梁、车辆等一般结构。
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