钢结构材料尺寸允许偏差

1、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)600750>7501000>10001500

2、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>0.350.50±0.05±0.07±0.05±0.07->0.500.60±0.06±0.08±0.06±0.08->0.600.75±0.07±0.09±0.07±0.09->0.750.90±0.08±0.10±0.08±0.10->0.901.10±0.09±0.11±0.09±0.12

3、->1.101.20±0.10±0.12±0.11±0.13±0.11±0.15>1.201.30±0.11±0.13±0.12±0.14±0.12±0.15>1.301.40±0.11±0.14±0.12±0.15±0.12±0.18>1.401.60±0.12±0.15±0.13±0.15±0.13±0.18>1.601.8

4、0±0.13±0.15±0.14±0.17±0.14±0.18>1.802.00±0.14±0.16±0.15±0.17±0.16±0.18>2.002.20±0.15±0.17±0.16±0.18±0.17±0.19>2.202.50±0.16±0.18±0.17±0.19±0.18±0.20>2.503.00±0.17&

5、#177;0.19±0.18±0.20±0.19±0.21>3.003.50±0.18±0.20±0.19±0.21±0.20±0.22>3.504.00±0.21±0.23±0.22±0.26±0.24±0.28>4.005.50-0.2-0.2-0.15-0.1-0.3-0.2>5.507.50-0.3-0.3-0.4-0.4-0.4-0.35>7.5010.00-0.6-0.6-0.6-0.6-0.5

6、-0.5>10.0013.00-0.6-0.6-0.6-0.6-0.5-0.5钢板的厚度允许偏差(二)                                          

7、;      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>360012001500170018002000230025002600280030003200340036003800>13250.820.20.30.40.60.80.811.11.2->25300.90.220.30.040.60.8

8、0.911.11.2->303410.20.30.30.40.60.80.911.21.3->34401.10.30.40.50.60.70.911.11.31.4->40501.20.40.50.60.70.811.11.21.41.5->50601.30.60.70.80.911.11.11.11.31.5->60801.8-11111.1121.31.31.31.31.41.4>801002-1.21.21.21.21.31.31.31.41.41.41.41.4>1001502.2-1.31.31.31.41.51.51.61.61.61.61

9、.61.6>1502002.6-1.51.51.51.61.71.71.71.81.81.81.81.8  钢板的厚度允许偏差(三)                                     

10、0;       mm 公称厚度(钢板和钢带)在下列宽度时的厚度允许偏差15002000>20002300>23002700>27003000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>0.500.60>0.600.75>0.750.90>0.901.10>1.101.20>1.201.30>1.301.40>1.401.60>1.601.80>1.802.00

11、7;0.17±0.20>2.002.20±0.18±0.20>2.202.50±0.19±0.21>2.503.00±0.20±0.22±0.23±0.25>3.003.50±0.22±0.24±0.26±0.29>3.504.00±0.26±0.28±0.30±0.33>4.005.50+0.20 -0.40+0.40 -0.50+0.25 -0.40+0.45 -0.50>5.50

12、7.50+0.20 -0.50+0.40 -0.60+0.25 -0.60+0.45 -0.60>7.5010.00+0.20 -0.70+0.35 -0.80+0.25 -0.70+0.45 -0.80+0.60 -0.80>10.0013.00+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4800+6>800+10&

13、gt;4161500+10>1500+15>1660所有宽度+30>60所有宽度+35  切边钢带的宽度允许偏差不得超过下列规定   钢带宽度  6001000m+5mm               >1000m+10mm不切边钢带的宽度允许偏差不得超过下列规定钢带宽度      1000m+20mm    

14、60;         >1000m+30mm纵剪钢带的宽度允许偏差                                     &

15、#160;                mm 公称厚度允许偏差厚度4.0>4.06.0>6.08.0>8.0160±0.5±0.8±1.0±1.2>160250±0.5±1.0±1.2±1.4>250600±1.0±1.0±1.2±1.4钢板的长度允许偏差  

16、0;                  mm 公称厚度钢板长度长度允许偏差41500+10>1500+15>4162000+10>20006000+25>6000+30>16602000+15>20006000+30>6000+40>60所有长度+50注:剪切后平整的热轧钢板,其长度偏差允许增加20mm.冷轧钢板和钢带尺寸允许偏差(GB/T708-1988)钢板和钢带的宽度允许偏

17、差     mm 公称宽度宽度允许偏差1000+6>1000+10不剪纵边的钢带+15钢板和钢带的宽度允许偏差                                     

18、  mm 公称宽度厚度允许偏差A级精度B级精度公称厚度1500>150020001500>150020000.200.50±0.04±0.05>0.500.65±0.05±0.06>0.650.90±0.06±0.07>0.901.10±0.07±0.09±0.09±0.11>1.101.20±0.09±0.10±0.10±0.12>1.201.4±0.10±0.12±0.1

19、1±0.14>1.41.5±0.11±0.13±0.12±0.15>1.51.8±0.12±0.14±0.14±0.16>1.82.0±0.13±0.15±0.15±0.17>2.02.5±0.14±0.17±0.16±0.18>2.53.0±0.16±0.19±0.18±0.20>3.03.5±0.18±0.20±0.2

20、0±0.21>3.54.0±0.19±0.21±0.22±0.24>4.05.0±0.20±0.22±0.23±0.25纵切钢带分宽度允许偏差                              

21、60;    mm 公称宽度宽度允许偏差公称厚度125>125250>250400>400<6000.200.40+0.3+0.6+1.0+1.5>0.401.0+0.5+0.8+1.2+1.5>1.01.8+0.7+1.0+1.5+2.0>1.83.0+1.0+1.3+1.7+2.0钢板的长度允许偏差       mm 公称长度长度允许偏差2000+10>2000+15锅炉用钢板允许偏差(GB/T713-1997)厚度允许偏差 

22、;                                        mm 公称厚度负偏差宽度600750>7501000>10001200>12001500>15001700>

23、17001800>18002000>20002300>23002500>25002600>26002800>28003000>30003200>32003400>34003600>36003800正偏差67.50.250.450.550.600.600.750.750.750.80>7.5100.250.750.750.850.850.900.900.901.001.151.151.15>10130.250.750.750.850.850.950.951.051.251.251.251.251.55>13250.25

24、0.750.750.850.951.151.351.351.551.551.75>25300.250.850.850.951.051.251.451.551.651.751.85>30340.250.951.051.051.151.351.551.651.751.952.05>34400.251.151.251.351.451.551.751.851.952.152.25>40500.251.351.451.551.651.751.952.052.152.352.45>50600.251.651.751.851.952.052.152.152.252.352.55

25、>60800.252.552.552.552.552.652.752.852.852.852.852.952.95>801000.252.952.952.952.953.053.053.053.153.153.153.153.15>1001500.253.253.253.253.253.453.453.553.553.553.553.553.55计算重量的厚度附加值                  

26、;                                 mm 公称厚度宽度600750>7501000>10001200>12001500>15001700>17001800>18002000>20002300>23002500&

27、gt;25002600>26002800>28003000>30003200>32003400>34003600>36003800正偏差67.50.100.150.180.180.250.250.250.28>7.5100.250.250.300.300.330.330.330.380.450.450.45>10130.250.250.300.300.350.350.350.400.500.500.500.65>13250.250.250.300.350.450.550.550.650.700.75>25300.300.300.350

28、.400.500.600.650.700.750.80>30340.350.400.400.450.550.650.700.750.850.90>34400.450.500.550.600.650.750.800.850.951.00>40500.550.600.650.700.750.850.900.951.051.10>50600.700.750.800.850.900.950.951.001.051.15>60801.151.151.151.151.201.251.301.301.301.301.351.35>801001.351.351.351.35

29、1.401.401.401.451.451.451.451.45>1001501.501.501.501.551.601.601.651.651.651.651.651.65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                       

30、            mm 公称厚度负偏差宽度600750>7501000>10001200>12001500>15001700>17001800>18002000>20002300>23002500>25002600>26002800>28003000>30003200>32003400>34003600>36003800正偏差67.50.250.450.550.600.600.750.750

31、.750.80>7.5100.250.750.750.850.850.900.900.901.001.151.151.15>10130.250.750.750.850.850.950.950.951.051.251.251.251.55>13250.250.750.750.850.951.151.351.351.551.651.75>25300.250.850.850.951.051.251.451.551.651.751.85>30340.250.951.051.051.151.351.551.651.751.952.05>34400.251.151.25

32、1.351.451.551.751.851.952.152.25>40500.251.351.451.551.651.751.952.052.152.352.45>50600.251.651.751.851.952.052.152.152.252.352.55>60800.252.552.552.552.552.652.752.852.852.852.852.952.95>801000.252.952.952.952.953.053.053.053.153.153.153.153.15>1001200.253.253.253.253.253.453.453.553

33、.553.553.553.553.55计算重量的厚度附加值                                        mm 公称厚度宽度600750>7501000>10001200>

34、;12001500>15001700>17001800>18002000>20002300>23002500>25002600>26002800>28003000>30003200>32003400>34003600>36003800正偏差67.50.100.150.180.180.250.250.250.28>7.5100.250.250.300.300.320.320.320.380.450.450.45>10130.250.250.300.300.350.350.350.400.500.500.500.6

35、5>13250.250.250.300.350.450.550.550.650.700.75>25300.300.300.350.400.500.600.650.700.750.80>30340.350.400.400.450.550.650.700.750.850.90>34400.450.500.550.600.650.750.800.850.951.00>40500.550.600.650.700.750.850.900.951.051.10>50600.700.750.800.850.900.950.951.001.051.15>60801.1

36、51.151.151.151.201.251.301.301.301.301.351.35>801001.351.351.351.351.401.401.401.451.451.451.451.45>1001201.501.501.501.601.601.651.651.651.651.651.651.65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5.57±0.20±0.30±0.40>720±0.25±0.35±0.40>2030±0.30±0.40±0.50>3050±0.40±0.50±0.60>5080±0.60±0.70±0.80>80110±0.90±1.00