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|
公稱口徑
Nominal Size(mm) |
外徑
O.D. |
普通鋼管
Ordinary Steel pipe | |||
|
mm |
in |
公稱尺寸
Nominal Size(mm) |
管件外徑允許偏差
Tolerance(mm) |
壁厚 W.T | |
|
公稱尺寸
Nominal Size |
允許偏差
Permissible Deviation | ||||
|
15 |
0.5 |
21.3 |
±0.5 |
2.80 |
±12.5% |
|
20 |
0.75 |
26.9 |
±0.5 |
2.80 | |
|
25 |
1 |
33.7 |
±0.5 |
3.20 | |
|
32 |
1.25 |
42.4 |
±0.5 |
3.50 | |
|
40 |
1.5 |
48.3 |
±0.5 |
3.50 | |
|
50 |
2 |
60.3 |
±1.0% |
3.50 | |
|
65 |
2.5 |
75.5 |
±1.0% |
3.75 | |
|
80 |
3 |
88.9 |
±1.0% |
4.00 | |
|
100 |
4 |
114.3 |
±1.0% |
4.00 | |