1、GB5237.1-2004表2允许偏差（土）/mm金属实体不小于75%空间大于25%，即金属实体小于指定部位尺寸/的部位尺寸75%的所有部位尺寸序号mm空心型材包固3栏以外的测量点与基淮边的距离L面积不小于70mm所有尺寸153060100150时的壁厚61530601001502001栏2栏3栏4栏5栏6栏7栏8栏9栏11.000.130.180.1821.002.000.150.230.220.2632.003.000.180.280.260.3043.004.000.200.380.300.350.4254.006.000.230.530.350.400.4766.0012.000.25
2、0.750.410.460.520.56712.0019.000.29、0.470.520.580.62819.0025.000.32一0.530.580.630.710.83925.0038.000.380.610.660.750.840.951038.0050.000.450.700.750.891.011.141.341150.00100.000.77一0.981.091.361.581.872.1712100.00150.001.08一1.311.441.822.192.603.0013150.00200.001.411.591.892.342.763.333.8314200.0025
3、0.001.741.872.142.873.383.994.61注：表中指定部位尺寸为1.20mm一2.00mm的型材壁厚偏差要求是强制性的。:除另有说明，本标准提到的空心型材包括通孔未完全封闭且空心部分面积大于开口宽度平方数2倍的型材。表3允许偏差（士）/mm金属实体不小于75%空间大于25%，即金属实体小于指定部位尺寸/的部位尺寸75%的所有部位尺寸序号mm空心型材包固测量点与基淮边的距离L3栏以外的面积不小于70mm所有尺寸153060100150时的壁厚61530601001502001栏2栏3栏4栏5栏6档7栏8栏9栏11.000.100.150.16一21.00-2.000.120.200.180.2132.003.000.140.250.210.250.2143.004.000.160.350.250.300.3854.006.000.180.450.300.350.4266.0012.000.200.600.350.400.460.5012.0019.000.230.410.450.510.56
