GB/T6728标准中对不锈钢无缝方管的公差要求
GB/T6728标准中对不锈钢无缝方管的公差要求
|
边长
/mm
|
尺寸允许偏差
/mm
|
壁厚
/mm
|
理论质量
/(kg/m)
|
截面面积
/cm2
|
边长
/mm
|
尺寸允许偏差
|
壁厚
t/mm
|
理论质量
/(kg/m)
|
截面面积
/cm2
|
|
A
|
普通精度
|
较高精度
|
|
|
|
A
|
普通精度
|
较高精度
|
|
|
|
|
25
|
±O.60
|
±0.30
|
1.2
|
0.867
|
1.105
|
80
|
±1.40
|
±O.70
|
3.0
|
7.071
|
9.008
|
|
1.5
|
1.06l
|
1.352
|
4.0
|
9.222
|
11.747
|
|
1.75
|
1.215
|
1.548
|
5.O
|
11.209
|
14.356
|
|
2.0
|
1.363
|
1.736
|
90
|
±1.50
|
±0.75
|
3.O
|
8.013
|
10.208
|
|
30
|
2.5
|
2.032
|
2.589
|
4.O
|
lO.478
|
13.347
|
|
3.0
|
2.361
|
3.008
|
5.0
|
12.839
|
16.356
|
|
40
|
±0.80
|
±O.40
|
2.5
|
2.817
|
3.589
|
6.O
|
15.097
|
19.232
|
|
3.0
|
3.303
|
4.208
|
100
|
±1.60
|
±0.80
|
4.O
|
11.734
|
14.947
|
|
5.O
|
14.409
|
18.356
|
|
4.0
|
4.198
|
5.347
|
6.O
|
16.98l
|
21.632
|
|
50
|
±1.00
|
±0.50
|
2.5
|
3.602
|
4.589
|
120
|
±1.80
|
±O.90
|
4.O
|
14.246
|
18.147
|
|
3.O
|
4.245
|
5.408
|
5.0
|
17.549
|
22.356
|
|
6.O
|
20.749
|
26.432
|
|
4.O
|
5.454
|
6.947
|
8.O
|
26.840
|
34.19l
|
|
60
|
±1.20
|
±0.60
|
2.5
|
4.387
|
5.589
|
140
|
±2.00
|
±1.00
|
4.O
|
16.758
|
21.347
|
|
3.0
|
5.187
|
6.608
|
5.0
|
20.689
|
26.356
|
|
4.0
|
6.7lO
|
8.547
|
6.O
|
24.517
|
31.232
|
|
8.O
|
31.864
|
40.59l
|
|
5.0
|
8.129
|
10.356
|
160
|
±2.40
|
±1.20
|
4.0
|
19.270
|
24.547
|
|
70
|
3.O
|
6.129
|
7.808
|
5.O
|
23.829
|
30.356
|
|
4.O
|
7.966
|
10.147
|
6.O
|
28.285
|
36.032
|
|
5.0
|
9.699
|
12.356
|
8.0
|
36.888
|
46.99l
|
我厂专业生产各种材质的不锈钢无缝方管，欢迎来厂考察洽谈业务，销售电话：陈经理。