Hydrostatic Test Pressures For Mild Steel (BS 1387/BDS 1031)
|
Series
and class
of pipe
|
Nominal Dia
|
Wall Thickness
mm
|
Out side Diameter
|
Hydrostatic
Test
Pressure
|
|
in
|
mm
|
mm
Max min
|
|
Light Series
Class-A
|
½ 15
¾ 20
1 25
1¼ 32
1½ 40
2 50
2½ 65
3 80
4 100
|
2.00
2.35
2.65
2.65
2.90
2.90
3.25
3.25
3.65
|
21.4 21.0
26.9 26.4
33.8 33.2
42.5 41.9
48.4 47.8
60.2 59.6
76.0 75.2
88.7 87.9
113.9 113.0
|
710 psi
(50 kg/cm2 )
|
|
Medium Series
Class-B
|
½ 15
¾ 20
1 25
1¼ 32
1½ 40
2 50
2½ 65
3 80
4 100
5 125
6 150
|
2.65
2.65
3.25
3.25
3.25
3.65
3.65
4.05
4.50
4.85
4.85
|
21.8 21.0
27.3 26.5
34.2 33.3
42.9 42.0
48.8 47.9
60.8 59.7
76.6 75.3
89.5 88.0
115.0 113.1
140.8 138.5
166.5 163.9
|
710 psi
(50 Kg/cm2)
|
|
Heavy Series
|
½ 15
¾ 20
1 25
1¼ 32
1½ 40
2 50
2½ 65
3 80
4 100
5 125
6 150
|
3.25
3.25
4.05
4.05
4.05
4.50
4.50
4.85
5.40
5.40
5.40
|
21.8 21.0
27.3 26.5
34.2 33.3
42.9 42.0
48.8 47.9
60.8 59.7
76.6 75.3
89.5 88.0
115.0 113.1
140.8 138.5
166.5 163.9
|
710 psi
(50 Kg/cm2)
|
| |
|
|
|
|
|
