扁钢及圆钢规范

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1、首页百科分类排行榜随便看看友情链接申请网站动态邀请注册窗体顶端···高级搜索窗体底端全民共同撰写的百科全书已收录词条 个中国钢铁百科 >> 钢铁标准 >> 其他标准热轧扁钢(GB704–88)发表评论(0)编辑词条热轧扁钢(GB704–88)本标准适用于厚度为3～60mm，宽度为10～150mm，截面为矩形的一般用途热轧扁钢。1尺寸及允许偏差1．1扁钢的截面图及标注符号如图1所示： 1．2扁钢的截面尺寸及理论重量应符合表2的规定。根据需方要求，并经供需双方协议，可供应表2所列规格之间的其他尺寸的扁钢，

2、其允许偏差按相邻较大尺寸扁钢的规定。1．3扁钢的截面尺寸允许偏差应符合表1的规定。表1宽  度厚  度尺寸 允许偏差尺寸 允许偏差普通级较高级普通级较高级10～50+O.5-0.1+0.3-0.93～16 +0.3-0.5+0.2-0.4>50～75+0.6-1.3+O.4-1.2>75～100+O.9-1.8+0.7-1.7>16～60 +1.5％-3.0％+1.0％-2.5％>100～150+1.0％-2.0％+0.8％-1.8％在同一截面任意两点测量的厚度差不得大于厚度公差的50%。表2宽度mm

3、厚度mm3456789101112141618202225283032364045505660理论重量kg/m100.240.310.390.470.550.63                   120.280.380.470.570.660.75                   140.330.440.550.660.770.88                   160.380.500.630.750.881.001.151.26                 180.420.570.

4、710.850.991.131.271.41                 200.470.630.780.941.101.261.411.571.731.88               220.520.690.861.041.211.381.551.731.902.07               250.590.780.981.181.371.571.771.962.162.362.753.14             280.660.881.101.321.541.761.982.202.4

5、22.643.083.53             300.710.941.181.411.651.882.122.362.592.833.303.774.244.71           320.751.001.261.511.762.012.262.552.763.013.524.024.525.02           350.821.101.371.651.922.202.472.753.023.303.854.404.955.506.046.877.69        400.941.261

6、.571.882.202.512.833.143.453.774.405.025.656.286.917.858.79        451.061.411.772.122.472.833.183.533.894.244.955.656.367.077.778.839.8910.6011.3012.72     501.181.571.962.362.753.143.533.934.324.715.506.287.067.858.649.8110.9911.7812.5614.13     55 1.

7、732.162.593.023.453.894.324.755.186.046.917.778.649.5010.7912.0912.9513.8215.54     60 1.882.362.833.303.774.244.715.185.656.597.548.489.4210.3611.7813.1914.1315.0716.9618.8421.20   65 2.042.553.063.574.084.595.105.616.127.148.169.1810.2011.2312.7614.29

8、15.3116.3318.3720.4122.96   70 2.202.753.303.854.404.955.506.016.597.698.799.8910.9912.0913.7415.3916.4917.5819.7821.9824.73   75 2.362.943.534.124.715.305.896.487.078.249.2410.0611.7812.9514.7216.4817.6618.4821.2023.5526.49   80