公稱口徑
|
外徑
|
壁厚
|
鍍鋅管壁黑鐵管
增加的重量系數(shù)
|
|
MM
|
MM
|
MM
|
普通鋼管
|
加厚鋼管
|
6
|
10.0
|
2
|
1.064
|
1.059
|
8
|
13.5
|
2.75
|
1.056
|
1.046
|
10
|
17.0
|
3.50
|
1.056
|
1.046
|
15
|
21.3
|
3.15
|
1.047
|
1.039
|
20
|
26.8
|
3.40
|
1.046
|
1.039
|
25
|
33.5
|
4.25
|
1.039
|
1.032
|
32
|
42.3
|
5.15
|
1.039
|
1.032
|
40
|
48.0
|
4.00
|
1.036
|
1.030
|
50
|
60.0
|
5.00
|
1.036
|
1.028
|
65
|
75.5
|
5.25
|
1.034
|
1.028
|
80
|
88.5
|
4.25
|
1.032
|
1.027
|
100
|
114.0
|
7.00
|
1.032
|
1.026
|
125
|
140.0
|
7.50
|
1.028
|
1.023
|
150
|
165.0
|
7.50
|
1.028
|
1.023
|
說明
|
W=C*[0.02466*(D-S)*S]
|
|||
注釋
|
W--鍍鋅管每米重量：kg/m
|
|||
C--鍍鋅管比黑鐵管增加的重量系數(shù)
|
||||
D--黑鐵管的外徑
|
||||
S--黑鐵管的壁厚
|
||||
