EN 10255 standard includes a variety of pipe end finishing and coating options, and also specifies the minimum wall thickness for each type of pipe, which helps protect the pipe from damage during transportation and use, as well as the use of weak pipes in construction projects or damaged tubing. In addition, pipes shall be manufactured by seamless or longitudinally welded processes.
This passage will show you the BS EN 10255 steel pipe specification. Read on to learn more.
EN 10255 Steel Pipe Dimensions:
|
NOMINAL BORE
|
APPROX OD
|
THICKNESS
|
|
MEDIUM
|
HEAVY
|
|
MM
|
INS
|
MM
|
INS
|
MM
|
MM
|
|
8
|
¼
|
13.5
|
0.53
|
2.35
|
2.90
|
|
10
|
3/8
|
17.2
|
0.69
|
2.35
|
2.90
|
|
15
|
½
|
21.3
|
0.84
|
2.65
|
3.25
|
|
20
|
¾
|
26.9
|
1.06
|
2.65
|
3.25
|
|
25
|
1
|
33.7
|
1.34
|
3.25
|
4.05
|
|
32
|
1 ¼
|
42.4
|
1.69
|
3.25
|
4.05
|
|
40
|
1 ½
|
48.3
|
1.91
|
3.25
|
4.05
|
|
50
|
2
|
60.3
|
2.38
|
3.65
|
4.50
|
|
65
|
2 ½
|
76.1
|
3.00
|
3.65
|
4.50
|
|
80
|
3
|
88.9
|
3.50
|
4.05
|
4.85
|
|
100
|
4
|
114.3
|
4.50
|
4.50
|
5.40
|
|
125
|
5
|
139.7
|
5.50
|
4.85
|
5.40
|
|
150
|
6
|
165.1
|
6.50
|
4.85
|
5.40
|
EN 10255 Steel Pipe Weights:
|
NOMINAL BORE
|
Red Primer Screwed & Socketed
|
Red Primer / Self Colour Plain Ended
|
Galvanised Screwed & Socketed
|
Galvanised Plain Ended
|
|
MEDIUM
|
HEAVY
|
MEDIUM
|
HEAVY
|
MEDIUM
|
HEAVY
|
MEDIUM
|
HEAVY
|
|
MM
|
INS
|
Kg/m
|
Kg/m
|
Kg/m
|
Kg/m
|
Kg/m
|
Kg/m
|
Kg/m
|
Kg/m
|
|
8
|
¼
|
0.65
|
0.77
|
0.64
|
0.77
|
0.68
|
0.80
|
0.67
|
0.79
|
|
10
|
3/8
|
0.85
|
1.03
|
0.84
|
1.02
|
0.89
|
1.07
|
0.88
|
1.06
|
|
15
|
½
|
1.22
|
1.45
|
1.21
|
1.44
|
1.27
|
1.50
|
1.26
|
1.49
|
|
20
|
¾
|
1.57
|
1.88
|
1.56
|
1.87
|
1.64
|
1.94
|
1.63
|
1.93
|
|
25
|
1
|
2.43
|
2.96
|
2.41
|
2.94
|
2.51
|
3.04
|
2.49
|
3.02
|
|
32
|
1 ¼
|
3.13
|
3.83
|
3.10
|
3.80
|
3.24
|
3.94
|
3.21
|
3.90
|
|
40
|
1 ½
|
3.61
|
4.42
|
3.57
|
4.38
|
3.73
|
4.54
|
3.69
|
4.50
|
|
50
|
2
|
5.10
|
6.26
|
5.03
|
6.19
|
5.26
|
6.41
|
5.18
|
6.34
|
|
65
|
2 ½
|
6.55
|
8.05
|
6.43
|
7.93
|
6.75
|
8.25
|
6.63
|
8.12
|
|
80
|
3
|
8.54
|
10.50
|
8.37
|
10.30
|
8.78
|
10.70
|
8.60
|
10.50
|
|
100
|
4
|
12.50
|
14.80
|
12.20
|
14.50
|
12.80
|
15.10
|
12.50
|
14.80
|
|
125
|
5
|
17.10
|
18.40
|
16.60
|
17.90
|
17.50
|
18.80
|
17.00
|
18.30
|
|
150
|
6
|
20.30
|
21.90
|
19.70
|
21.30
|
20.80
|
22.30
|
20.20
|
21.70
|
EN 10255 Steel Pipe Pressure Capabilities:
|
NOMINAL BORE
|
MEDIUM
|
MEDIUM
|
HEAVY
|
HEAVY
|
|
WATER
|
AIR OR STEAM AT 260oC MAX
|
WATER
|
AIR OR STEAM AT 260oC MAX
|
|
MM
|
INS
|
BAR
|
BAR
|
BAR
|
BAR
|
|
8
|
¼
|
35
|
17
|
42
|
21
|
|
10
|
3/8
|
35
|
17
|
42
|
21
|
|
15
|
½
|
35
|
17
|
42
|
21
|
|
20
|
¾
|
35
|
17
|
42
|
21
|
|
25
|
1
|
35
|
17
|
42
|
21
|
|
32
|
1 ¼
|
28
|
14
|
35
|
17
|
|
40
|
1 ½
|
28
|
14
|
35
|
17
|
|
50
|
2
|
24
|
12
|
31
|
15
|
|
65
|
2 ½
|
24
|
12
|
31
|
15
|
|
80
|
3
|
21
|
10
|
28
|
14
|
|
100
|
4
|
17
|
8
|
21
|
10
|
|
125
|
5
|
17
|
8
|
21
|
10
|
|
150
|
6
|
14
|
7
|
17
|
8
|
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