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：13901424163陈经理。