因此,较小口径的焊管大都采用直缝焊,大口径焊管则大多采用螺旋焊。
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
|
200
|
8.8
|
10.0
|
202.4
|
200
|
220.0
|
227.0
|
254.0
|
16.30
|
0.382
|
42.0
|
47.5
|
||
250
|
9.5
|
10.8
|
252.6
|
250
|
271.6
|
303.0
|
340.0
|
21.30
|
0.626
|
56.3
|
63.7
|
||
300
|
10.0
|
11.4
|
302.8
|
300
|
322.8
|
381.0
|
428.0
|
452.0
|
590.0
|
26.10
|
0.741
|
70.8
|
80.3
|
350
|
10.8
|
12.0
|
352.4
|
350
|
374.0
|
566.0
|
623.0
|
32.60
|
0.857
|
88.7
|
98.3
|
||
400
|
11.5
|
12.8
|
402.6
|
400
|
425.6
|
687.0
|
757.0
|
39.00
|
1.460
|
107.7
|
119.5
|
||
450
|
12.0
|
13.4
|
452.4
|
450
|
476.8
|
806.0
|
892.0
|
46.90
|
1.640
|
126.2
|
140.5
|
||
500
|
12.8
|
14.0
|
502.4
|
500
|
528.0
|
950.0
|
1030.0
|
52.70
|
1.810
|
149.2
|
162.8
|
||
600
|
14.2
|
15.6
|
602.4
|
599.6
|
630.8
|
1260.0
|
1370.0
|
68.80
|
2.160
|
198.0
|
217.1
|
||
700
|
15.5
|
17.1
|
702.0
|
698.8
|
733.0
|
1600.0
|
1750.0
|
86.00
|
2.510
|
251.6
|
276.9
|
||
800
|
16.8
|
18.5
|
802.6
|
799.0
|
836.0
|
1080.0
|
2160.0
|
109.00
|
2.860
|
311.3
|
342.1
|
||
900
|
18.2
|
20.2
|
902.9
|
899.0
|
939.0
|
2410.0
|
2630.0
|
136.00
|
3.210
|
379.1
|
415.7
|
||
1000
|
20.5
|
22.6
|
1000.0
|
955.8
|
1041.0
|
3020.0
|
3300.0
|
173.00
|
3.550
|
473.2
|
520.6
|