BS 1387 : 1985 A-1Steel Pipe
Chemical Composition
Mechanical Properties
HYDROSTATIC TEST (BAR)
PIPES THREADS
C
Mn
P
S
TENSILE
YIELD
ELONGATION
MAX %
MAX %
MAX %
MAX %
STRENGTH
STRENGTH
%
-
-
-
-
320N/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)
0.841
21.4
0.803
20.2
1.9
0.606
0.276
0.904
0.612
0.278
0.913
14
169
3/4 (20)
1.059
26.9
1.023
26.0
2.0
0.831
0.378
1.24
0.838
0.381
1.25
14
127
1 (25)
1.328
33.8
1.260
32.0
2.3
1.214
0.552
1.81
1.227
0.558
1.83
11
91
1 1/4 (32)
1.670
42.5
1.606
40.8
2.3
1.609
0.732
2.40
1.629
0.741
2.43
11
61
1 1/2 (40)
1.903
48.4
1.850
47.0
2.5
1.918
0.872
2.86
1.945
0.884
2.90
11
44
2 (50)
2.370
60.2
2.322
59.0
2.5
2.461
1.119
3.67
2.508
1.140
3.74
11
37
2 1/2(65)
2.991
76.0
2.913
74.0
2.8
3.373
1.533
5.03
3.453
1.570
5.15
11
24
3 (80)
3.491
88.7
3.432
87.2
2.9
4.614
1.893
6.21
4.278
1.945
6.38
11
19
4 (100)
4.481
113.9
4.448
113.0
3.2
5.834
2.652
8.70
6.042
2.746
9.01
11
14
 DIMENSION TOLERANCE
 WALL THICKNESS : -15%
 LENGTH : + 50 mm., -0 mm.