EN 10255 Medium Steel Pipe
Chemical Composition
Mechanical Properties
HYDROSTATIC TEST (BAR)
PIPES THREADS
C
Mn
P
S
TENSILE
YIELD
ELONGATION
MAX %
MAX %
MAX %
MAX %
STRENGTH
STRENGTH
%
0.20
1.20
0.045
0.045
320-460N/mm2
195N/mm2
20
50
55
 
Nominal
Outside Diameter
Wall
Calculated Weight
Threads
Number of
Size
Thickness
Per 25.4
Pieces Per
(DN)
(Max)
(Min)
 
Plain Ends
Threads & Coupling
mm.
Bundle
in
in
mm.
in
mm.
mm.
lb/ft
kg/ft
kg/m
lb/ft
kg/ft
kg/m
   
3/8 (10)
0.685
17.4
0.660
16.8
2.3
0.563
0.256
0.839
0.567
0.258
0.846
19
169
1/2 (15)
0.856
21.7
0.831
21.1
2.6
0.811
0.369
1.21
0.818
0.372
1.22
14
169
3/4 (20)
1.072
27.2
1.047
26.6
2.6
1.046
0.475
1.56
1.053
0.479
1.57
14
127
1 (25)
1.346
34.2
1.316
33.4
3.2
1.616
0.735
2.41
1.629
0.741
2.43
11
91
11/4 (32)
1.687
42.9
1.657
42.1
3.2
2.079
0.945
3.10
2.099
0.954
3.13
11
61
11/2 (40)
1.919
48.8
1.889
48.0
3.2
2.394
1.088
3.57
2.421
1.100
3.61
11
44
2 (50)
2.394
60.8
2.354
59.8
3.6
3.373
1.533
5.03
3.420
1.554
5.1
11
37
2 1/2 (65)
3.014
76.6
2.969
75.4
3.6
4.312
1.960
6.43
4.392
1.996
6.55
11
24
3 (80)
3.524
89.5
3.469
88.1
4.0
5.613
2.551
8.37
5.727
2.603
8.54
11
19
4 (100)
4.524
114.9
4.459
113.3
4.5
8.181
3.719
12.2
8.382
3.81
12.5
11
14
 DIMENSION TOLERANCE
 WALL THICKNESS : -10% + NOT LIMIT
 WEIGHT : + 4% PER BUNDLE (OVER 500 ft)
              : + 10%, -8% PER PIECE
 LENGTH : + 50 mm, - 0 mm.
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