EN 10255 Heavy 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
   
1/2 (15)
0.854
21.7
0.831
21.1
3.2
0.966
0.439
1.44
0.972
0.442
1.45
14
169
3/4 (20)
1.071
27.2
0.047
26.6
3.2
1.254
0.57
1.87
1.261
0.573
1.88
14
127
1 (25)
1.346
34.2
1.316
33.4
4.0
1.971
0.896
2.94
1.985
0.902
2.96
11
91
1 1/4 (32)
1.685
42.9
1.657
42.1
4.0
2.548
1.158
3.8
2.568
1.167
3.83
11
61
1 1/2 (40)
1.917
48.8
1.889
48.0
4.0
2.937
1.335
4.38
2.964
1.347
4.42
11
44
2 (50)
2.394
60.8
2.354
59.8
4.5
4.151
1.887
6.19
4.198
1.908
6.26
11
37
 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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