钢结构材料尺寸允许偏差

尺寸允许偏差热轧钢板和钢带尺寸允许偏差(GB/T709-1988)钢板的厚度允许偏差(一)

mm公称厚度在下列宽度时的厚度允许偏差(钢板和钢带)600∽750>750∽1000>1000∽1500较高轧制精度普通轧制精度较高轧制精度普通轧制精度较高轧制精度普通轧制精度>0.35∽0.50±0.05±0.07±0.05±0.07-->0.50∽0.60±0.06±0.08±0.06±0.08-->0.60∽0.75±0.07±0.09±0.07±0.09-->0.75∽0.90±0.08±0.10±0.08±0.10-->0.90∽1.10±0.09±0.11±0.09±0.12-->1.10∽1.20±0.10±0.12±0.11±0.13±0.11±0.15>1.20∽1.30±0.11±0.13±0.12±0.14±0.12±0.15>1.30∽1.40±0.11±0.14±0.12±0.15±0.12±0.18>1.40∽1.60±0.12±0.15±0.13±0.15±0.13±0.18>1.60∽1.80±0.13±0.15±0.14±0.17±0.14±0.18>1.80∽2.00±0.14±0.16±0.15±0.17±0.16±0.18>2.00∽2.20±0.15±0.17±0.16±0.18±0.17±0.19>2.20∽2.50±0.16±0.18±0.17±0.19±0.18±0.20>2.50∽3.00±0.17±0.19±0.18±0.20±0.19±0.21>3.00∽3.50±0.18±0.20±0.19±0.21±0.20±0.22>3.50∽4.00±0.21±0.23±0.22±0.26±0.24±0.28>4.00∽5.50-0.2-0.2-0.15-0.1-0.3-0.2>5.50∽7.50-0.3-0.3-0.4-0.4-0.4-0.35>7.50∽10.00-0.6-0.6-0.6-0.6-0.5-0.5>10.00∽13.00-0.6-0.6-0.6-0.6-0.5-0.5钢板的厚度允许偏差(二)

mm公称厚度(钢板和钢带)负偏差下列宽度的厚度允许正偏差>1000>1200>1500>1700>1800>2000>2300>2500>2600>2800>3000>3200>3400>3600∽1200∽1500∽1700∽1800∽2000∽2300∽2500∽2600∽2800∽3000∽3200∽3400∽3600∽3800>13∽250.820.20.30.40.60.80.811.11.2---->25∽300.90.220.30.040.60.80.911.11.2---->30∽3410.20.30.30.40.60.80.911.21.3---->34∽401.10.30.40.50.60.70.911.11.31.4---->40∽501.20.40.50.60.70.811.11.21.41.5---->50∽601.30.60.70.80.911.11.11.11.31.5---->60∽801.8--11111.1121.31.31.31.31.41.4>80∽1002--1.21.21.21.21.31.31.31.41.41.41.41.4>100∽1502.2--1.31.31.31.41.51.51.61.61.61.61.61.6>150∽2002.6--1.51.51.51.61.71.71.71.81.81.81.81.8

钢板的厚度允许偏差(三)

mm公称厚度(钢板和钢带)在下列宽度时的厚度允许偏差1500∽2000>2000∽2300>2300∽2700>2700∽3000较高普通较高普通较高普通较高普通轧制轧制轧制轧制轧制轧制轧制轧制精度精度精度精度精度精度精度精度>0.35.∽0.50――――――――>0.50∽0.60――――――――>0.60∽0.75――――――――>0.75∽0.90――――――――>0.90∽1.10――――――――>1.10∽1.20――――――――>1.20∽1.30――――――――>1.30∽1.40――――――――>1.40∽1.60――――――――>1.60∽1.80――――――――>1.80∽2.00±0.17±0.20――――――>2.00∽2.20±0.18±0.20――――――>2.20∽2.50±0.19±0.21――――――>2.50∽3.00±0.20±0.22±0.23±0.25――――>3.00∽3.50±0.22±0.24±0.26±0.29――――>3.50∽4.00±0.26±0.28±0.30±0.33――――>4.00∽5.50+0.20-0.40+0.40-0.50+0.25-0.40+0.45-0.50――――>5.50∽7.50+0.20-0.50+0.40-0.60+0.25-0.60+0.45-0.60――――>7.50∽10.00+0.20-0.70+0.35-0.80+0.25-0.70+0.45-0.80―+0.60-0.80――>10.00∽13.00+0.30-0.70+0.40-0.80+0.35-0.70+0.50-0.80―+0.70-0.80―+1.00-0.80

切边钢板的宽度允许偏差

mm公称厚度宽度宽度允许偏差≤2000+10>2000+15锅炉用钢板允许偏差(GB/T713-1997)厚度允许偏差

mm公称厚度负偏差宽度600∽

750>750∽

1000>1000

∽1200>1200

∽1500>1500

∽1700>1700

∽1800>1800

∽2000>2000

∽2300>2300

∽2500>2500

∽2600>2600

∽2800>2800

∽3000>3000

∽3200>3200

∽3400>3400

∽3600>3600

∽3800正偏差6∽7.50.250.450.550.600.600.750.750.750.80>7.5∽100.250.750.750.850.850.900.900.901.001.151.151.15>10∽130.250.750.750.850.850.950.951.051.251.251.251.251.55>13∽250.250.750.750.850.951.151.351.351.551.551.75>25∽300.250.850.850.951.051.251.451.551.651.751.85>30∽340.250.951.051.051.151.351.551.651.751.952.05>34∽400.251.151.251.351.451.551.751.851.952.152.25>40∽500.251.351.451.551.651.751.952.052.152.352.45>50∽600.251.651.751.851.952.052.152.152.252.352.55>60∽800.252.552.552.552.552.652.752.852.852.852.852.952.95>80∽1000.252.952.952.952.953.053.053.053.153.153.153.153.15>100∽1500.253.253.253.253.253.453.453.553.553.553.553.553.55计算重量的厚度附加值

mm公称厚度宽度600∽

750>750∽

1000>1000

∽1200>1200

∽1500>1500

∽1700>1700

∽1800>1800

∽2000>2000

∽2300>2300

∽2500>2500

∽2600>2600

∽2800>2800

∽3000>3000

∽3200>3200

∽3400>3400

∽3600>3600

∽3800正偏差6∽7.50.100.150.180.180.250.250.250.28>7.5∽100.250.250.300.300.330.330.330.380.450.450.45>10∽130.250.250.300.300.350.350.350.400.500.500.500.65>13∽250.250.250.300.350.450.550.550.650.700.75>25∽300.300.300.350.400.500.600.650.700.750.80>30∽340.350.400.400.450.550.650.700.750.850.90>34∽400.450.500.550.600.650.750.800.850.951.00>40∽500.550.600.650.700.750.850.900.951.051.10>50∽600.700.750.800.850.900.950.951.001.051.15>60∽801.151.151.151.151.201.251.301.301.301.301.351.35>80∽1001.351.351.351.351.401.401.401.451.451.451.451.45>100∽1501.501.501.501.551.601.601.651.651.651.651.651.65注:钢板按理论重量交货时,以钢板的公称厚度加上上表的附加值作为计算重量的理论厚度.压力容器用钢板允许偏差(GB6654-1996）厚度允许偏差

mm公称厚度负偏差宽度600∽

750>750∽

1000>1000

∽1200>1200

∽1500>1500

∽1700>1700

∽1800>1800

∽2000>2000

∽2300>2300

∽2500>2500

∽2600>2600

∽2800>2800

∽3000>3000

∽3200>3200

∽3400>3400

∽3600>3600

∽3800正偏差6∽7.50.250.450.550.600.600.750.750.750.80>7.5∽100.250.750.750.850.850.900.900.901.001.151.151.15>10∽130.250.750.750.850.850.950.950.951.051.251.251.251.55>13∽250.250.750.750.850.951.151.351.351.551.651.75>25∽300.250.850.850.951.051.251.451.551.651.751.85>30∽340.250.951.051.051.151.351.551.651.751.952.05>34∽400.251.151.251.351.451.551.751.851.952.152.25>40∽500.251.351.451.551.651.751.952.052.152.352.45>50∽600.251.651.751.851.952.052.152.152.252.352.55>60∽800.252.552.552.552.552.652.752.852.852.852.852.952.95>80∽1000.252.952.952.952.953.053.053.053.153.153.153.153.15>100∽1200.253.253.253.253.253.453.453.553.553.553.553.553.55计算重量的厚度附加值

mm公称厚度宽度600∽

750>750∽

1000>1000

∽1200>1200

∽1500>1500

∽1700>1700

∽1800>1800

∽2000>2000

∽2300>2300

∽2500>2500

∽2600>2600

∽2800>2800

∽3000>3000

∽3200>3200

∽3400>3400

∽3600>3600

∽3800正偏差6∽7.50.100.150.180.180.250.250.250.28>7.5∽100.250.250.300.300.320.320.320.380.450.450.45>10∽130.250.250.300.300.350.350.350.400.500.500.500.65>13∽250.250.250.300.350.450.550.550.650.700.75>25∽300.300.300.350.400.500.600.650.700.750.80>30∽340.350.400.400.450.550.650.700.750.850.90>34∽400.450.500.550.600.650.750.800.850.951.00>40∽500.550.600.650.700.750.850.900.951.051.10>50∽600.700.750.800.850.900.950.951.001.051.15>60∽801.151.151.151.151.201.251.301.301.301.301.351.35>80∽1001.351.351.351.351.401.401.401.451.451.451.451.45>100∽1201.501.501.501.601.601.651.651.651.651.651.651.65热轧圆钢直径和方钢边长的允许偏差(GB/T702-1986)

mm圆钢直径d

方钢边长a精度组别允许偏差1组2组3组5.5∽7±0.20±0.30±0.40>7∽20±0.25±0.35±0.40>20∽30±0.30±0.40±0.50>30∽50±0.40±0.50±0.60>50∽80±0.60±0.70±0.80>80∽110±0.90±1.00±1.1>110∽150±1.20±1.3±1.4>150∽190――±2.0>190∽250――±2.5热轧工字钢尺寸允许偏差(GB/T706-1988)工字钢的高度h、腿宽度b、腰厚度d允许偏差

mm型号允许偏差高度h腿宽度b腰厚度d≤14±2.0±2.0±0.5>14∽18±2