Types of welded steel pipes
Including ordinary welded steel pipe, oxygen-blown steel pipe, wire casing, galvanized steel pipe, transformer pipe, electric welding special-shaped pipe, etc.
Dimensions and weights of welded steel pipes for low pressure fluid transfer
|
Nominal diameter
|
OD（mm）
|
Ordinary tube
|
Thickened tube
|
|
（mm）
|
（in）
|
Wall thickness（mm）
|
Theoretical weight
（kg/m）
|
Wall thickness（mm）
|
Theoretical weight
（kg/m）
|
|
6
|
1/8
|
10.00
|
2.00
|
0.39
|
2.50
|
0.46
|
|
8
|
1/4
|
13.50
|
2.25
|
0.62
|
2.75
|
0.73
|
|
10
|
3/8
|
17.00
|
2.25
|
0.82
|
2.75
|
0.97
|
|
15
|
1/2
|
21.25
|
2.75
|
1.26
|
3.25
|
1.45
|
|
20
|
3/4
|
26.75
|
2.75
|
1.63
|
3.50
|
2.01
|
|
25
|
1
|
33.50
|
3.25
|
2.42
|
4.00
|
2.91
|
|
32
|
11/4
|
42.25
|
3.25
|
3.13
|
4.00
|
3.78
|
|
40
|
11/2
|
48.00
|
3.50
|
3.84
|
4.25
|
4.58
|
|
50
|
2
|
60.00
|
3.50
|
4.88
|
4.50
|
6.16
|
|
65
|
21/2
|
75.50
|
3.75
|
6.64
|
4.50
|
7.88
|
|
80
|
3
|
88.50
|
4.00
|
8.34
|
4.75
|
9.81
|
|
100
|
4
|
114.00
|
4.00
|
10.85
|
5.00
|
13.44
|
|
125
|
5
|
140.00
|
4.00
|
13.42
|
5.50
|
18.24
|
|
150
|
6
|
165.00
|
4.50
|
17.81
|
5.50
|
21.63
|
Calculation formula: W(kg/m)=0.02466*thickness*(outer diameter-wall thickness)
International Welded Pipe Standard
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