鋼管的尺寸與重量 Dimensions,Weights of steel pipes
|
公稱口徑
Normal size
|
外徑
Outer Diameter
|
普通壁厚
Normal Thickness
|
|
mm
|
ln
|
mm
|
允許偏差
Tolerance
|
mm
|
允許偏差
Tolerance
|
單重
Weight kg/m
|
鍍鋅后重量增加系數(shù)
The add after galvanized
|
|
15
|
1/2
|
21.3
|
±0.5mm
|
2.75
|
±12%-15%
|
1.26
|
1.047
|
|
20
|
3/4
|
26.8
|
2.75
|
1.63
|
1.046
|
|
25
|
1
|
33.5
|
3.25
|
2.42
|
1.039
|
|
32
|
1 1/4
|
42.3
|
3.25
|
3.13
|
1.039
|
|
40
|
1 1/2
|
48.0
|
3.50
|
3.84
|
1.036
|
|
50
|
2
|
60.0
|
±1.0%
|
3.50
|
4.88
|
1.036
|
|
65
|
2 1/2
|
75.5
|
3.75
|
6.64
|
1.034
|
|
80
|
3
|
88.5
|
4.00
|
8.34
|
1.032
|
|
100
|
4
|
114.0
|
4.00
|
10.85
|
1.032
|
|
125
|
5
|
140.0
|
4.50
|
13.42
|
1.028
|
|
150
|
6
|
165.0
|
4.50
|
17.81
|
1.028
|
