BS 1387 (EN 10255), A British standard for welded black pipes for screwing to BS21 pipe threads, BS 1387 hot galvanized steel pipe suitable for Threading widely used for gas, air and water transmission, civil and other structures purposes. BS1387 ERW galvanized steel pipe which nominal size DN8-DN150 in light, medium and heavy thickness.
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Chemical composition and mechanical properties at room temperature |
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|
Chemical composition (Ladle) |
Mechanical properties at room temperature | |||||
|
C Max. |
Mn Max. |
P Max. |
S Max. |
Tensile Strength, Rm |
Yield Strength, Re (min.) |
Elongation on Gauge Length L0 = 5.65 S0 A (min.) |
|
% |
% |
% |
% |
N/mm2 |
N/mm2 |
% |
|
0.2 |
1.2 |
0.045 |
0.045 |
320 to 460 |
195 |
20 |
BS1387 Hot-Dip Galvanized Steel Pipe Size Chart
|
Nominal bore |
Outside diameter |
Thickness |
Mass |
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|
Light |
Medium / Heavy |
Light |
Medium |
Heavy |
Light |
Medium |
Heavy |
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|
in |
mm |
mm |
mm |
mm |
mm |
mm |
kg/m |
kg/m |
kg/m |
|
1/4 |
8 |
13.60 |
13.90 |
1.80 |
2.30 |
2.90 |
0.515 |
0.641 |
0.765 |
|
3/8 |
10 |
17.10 |
17.40 |
1.80 |
2.30 |
2.90 |
0.670 |
0.839 |
1.020 |
|
1/2 |
15 |
21.40 |
21.70 |
2.00 |
2.60 |
3.20 |
0.947 |
1.210 |
1.440 |
|
3/4 |
20 |
26.90 |
27.20 |
2.30 |
2.60 |
3.20 |
1.380 |
1.560 |
1.870 |
|
1 |
25 |
33.80 |
34.20 |
2.60 |
3.20 |
4.00 |
1.980 |
2.410 |
2.940 |
|
1 1/4 |
32 |
42.50 |
42.90 |
2.60 |
3.20 |
4.00 |
2.540 |
3.100 |
3.800 |
|
1 1/2 |
40 |
48.40 |
48.80 |
2.90 |
3.20 |
4.00 |
3.230 |
3.570 |
4.380 |
|
2 |
50 |
60.20 |
60.80 |
2.90 |
3.60 |
4.50 |
4.080 |
5.030 |
6.190 |
|
2 1/2 |
65 |
76.00 |
76.60 |
3.20 |
3.60 |
4.50 |
5.710 |
6.430 |
7.930 |
|
3 |
80 |
88.70 |
89.50 |
3.20 |
4.00 |
5.00 |
6.720 |
8.370 |
10.300 |
|
4 |
100 |
113.90 |
114.90 |
3.60 |
4.50 |
5.40 |
9.750 |
12.200 |
14.500 |
|
5 |
125 |
|
140.60 |
|
5.00 |
5.40 |
|
16.600 |
17.900 |
|
6 |
150 |
|
166.10 |
|
5.00 |
5.40 |
|
19.700 |
21.300 |
