因此,較小口徑的焊管大都采用直縫焊,大口徑焊管則大多采用螺旋焊。
DN15 |
1/2 |
21.3 |
2.8 |
DN20 |
3/4 |
26.9 |
2.8 |
DN25 |
1 |
33.7 |
3.2 |
DN32 |
1.25 |
42.4 |
3.5 |
DN40 |
1.5 |
48.3 |
3.5 |
DN50 |
2 |
60.3 |
3.8 |
DN65 |
2.5 |
76.1 |
4.0 |
DN80 |
3 |
88.9 |
4.0 |
DN100 |
4 |
114.3 |
4.0 |
DN125 |
5 |
140 |
4.5 |
DN150 |
6 |
168.3 |
4.5 |