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Steel Conduit Pipes for Electrical Purposes Equivalent Standard BS-31 - Technical Specification
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Rigid Steel Conduits Made To IS: 9537 (Part-II) 1981 Specifications Dimensional Requirements :
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| Nominal Size in mm |
20.00 |
25.00 |
32.00 |
40.00 |
50.00 |
| Outside Diameter (MM) |
20.00 |
25.00 |
32.00 |
40.00 |
50.00 |
| Tolerance on outside diameter (MM) |
-0.30 |
-0.40 |
-0.40 |
-0.40 |
-0.50 |
| Minimum Outside diameter (MM) |
19.70 |
24.60 |
31.60 |
39.60 |
49.50 |
| Wall Thickness |
| (a) Minimum (MM) |
1.40 |
1.40 |
1.40 |
1.60 |
1.60 |
| (b) Maximum (MM) |
1.80 |
1.80 |
1.80 |
2.20 |
2.20 |
ASTM Std. A53 Welded Steel Pipes and Seamless Steel Pipes Available Sizes ( Dimensions and Weights)
| NPS Designator |
Outside Diameter |
Wall Thickness |
Weight Class |
Schedule No. |
Plain End |
Thread & Coupling |
| In. |
mm |
In. |
mm |
Weight |
Weight |
| Ib/ft |
kg/ft |
kg/m |
Ib/ft |
kg/ft |
kg/m |
| 1/2 |
0.840 |
21.3 |
0.109 |
2.77 |
STD |
40 L |
0.85 |
0.39 |
1.27 |
0.85 |
0.39 |
1.27 |
| 0.147 |
3.73 |
XS |
80 M |
1.09 |
0.49 |
1.62 |
1.09 |
0.49 |
1.62 |
| 0.188 |
4.78 |
- |
160 H |
1.31 |
0.59 |
1.95 |
- |
- |
- |
| 0.294 |
7.47 |
XXS |
- |
1.71 |
0.78 |
2.55 |
1.72 |
0.78 |
2.54 |
| 3/4 |
1.050 |
26.7 |
0.113 |
2.87 |
STD |
40 |
1.13 |
0.51 |
1.69 |
1.13 |
0.51 |
1.69 |
| 0.154 |
3.91 |
XS |
80 |
1.47 |
0.67 |
2.20 |
1.48 |
0.67 |
2.21 |
| 0.219 |
5.56 |
- |
160 |
1.94 |
0.88. |
2.90 |
- |
- |
- |
| 0.308 |
7.82 |
XXS |
- |
2.44 |
1.11 |
3.64 |
2.44 |
1.11 |
3.64 |
| 1 |
1.315 |
33.4 |
0.133 |
3.38 |
STD |
40 |
1.68 |
0.76 |
.2.50 |
1.68 |
0.76 |
2.50 |
| 0.179 |
4.45 |
XS |
80 |
2.17 |
0.98 |
3.24 |
2.18 |
0.99 |
3:25 |
| 0.250 |
6.35 |
- |
160 |
2.84 |
1.29 |
4.24 |
- |
- |
- |
| 0.358 |
9.09 |
XXS |
- |
3.66 |
1.66 |
5.45 |
3.66 |
1.66 |
5.45 |
| 1¼ |
1.660 |
42.2 |
0.140 |
3.56 |
STD |
40 |
2.72 |
1.23 |
4.05 |
2.73 |
1.24 |
4.04 |
| 0.191 |
4.85 |
XS |
80 |
3.63 |
1.65 |
5.41 |
3.66 |
1.66 |
5.39 |
| 0.250 |
6.35 |
- |
160 |
4.86 |
2.21 |
7.25 |
- |
- |
- |
| 0.382 |
9.70 |
XXS |
- |
6.41 |
2.91 |
9.56 |
6.41 |
2.91 |
9.56 |
| 1½ |
1.900 |
48.3 |
0.145 |
3.68 |
STD |
40 |
2.72 |
1.23 |
4.05 |
2.73 |
1.24 |
4.04 |
| 0.200 |
5.08 |
XS |
80 |
3.63 |
1.65 |
5.41 |
3.66 |
1.66 |
5.39 |
| 0.281 |
7.14 |
- |
160 |
4.86 |
2.21 |
7.25 |
- |
- |
- |
| 0.400 |
10.16 |
XXS |
- |
6.41 |
2.91 |
9.56 |
6.41 |
2.91 |
9.56 |
| 2 |
2.375 |
60.3 |
0.154 |
3.91 |
STD |
40 |
3.65 |
1.66 |
5.44 |
3.68 |
1.67 |
5.46 |
| 0.218 |
5.54 |
XS |
80 |
5.02 |
2.28 |
7.48 |
5.07 |
2.30 |
7.55 |
| 0.344 |
8.74 |
- |
160 |
7.46 |
3.39 |
11.11 |
- |
- |
- |
| 0.436 |
11.07 |
XXS |
- |
9.03 |
4.10 |
13.44 |
9.03 |
4.10 |
13.44 |
| 2½ |
2.875 |
73.0 |
0.203 |
5.16 |
STD |
40 |
5.79 |
2.63 |
8.63 |
5.82 |
2.64 |
8.67 |
| 0.276 |
7.01 |
XS |
80 |
7.66 |
3.47 |
11.41 |
7.73 |
3.51 |
11.52 |
| 0.375 |
9.52 |
- |
160 |
10.01 |
4.54 |
14.90 |
- |
- |
- |
| 0.552 |
14.02 |
XXS |
- |
13.70 |
6.21 |
20.39 |
13.70 |
6.22 |
20.39 |
| 3 |
3.500 |
88.9 |
0.125 |
3.18 |
- |
- |
4.51 |
2.05 |
6.72 |
- |
- |
- |
| 0.156 |
3.96 |
- |
- |
5.57 |
2.53 |
8.29 |
- |
- |
- |
| 0.188 |
4.78 |
- |
- |
6.65 |
3.02 |
9.92 |
- |
- |
- |
| 0.216 |
5.49 |
STD |
40 |
7.58 |
3.44 |
11.29 |
7.62 |
3.46 |
11.35 |
| 0.250 |
6.35 |
- |
- |
8.68 |
3.94 |
12.93 |
- |
- |
- |
| 0.281 |
7.14 |
- |
- |
9.96 |
4.38 |
14.40 |
- |
- |
- |
| 0.300 |
7.62 |
XS |
80 |
10.25 |
4.65 |
15.27 |
10.33 |
4.46 |
15.39 |
| 0.438 |
11.13 |
- |
160 |
14.32 |
6.50 |
21.35 |
- |
- |
- |
| 0.600 |
15.24 |
XXS |
- |
18.58 |
8.43 |
27.68 |
18.57 |
8.43 |
27-66 |
| 4 |
4.500 |
114.3 |
0.125 |
3.18 |
- |
- |
5.84 |
2.65 |
8.71 |
- |
- |
- |
| 0.156 |
3.96 |
- |
- |
7.24 |
3.28 |
10.87 |
- |
- |
- |
| 0.188 |
4.78 |
- |
- |
8.66 |
3.98 |
12.91 |
- |
- |
- |
| 0.219 |
5.56 |
- |
- |
10.01 |
4.54 |
14.91 |
- |
- |
- |
| 0.237 |
6.02 |
STD |
40 |
10.79 |
4.89 |
16.07 |
10.89 |
4.94 |
16.2 |
| 0.250 |
6.35 |
- |
- |
11.35 |
5.15 |
16.90 |
- |
- |
- |
| 0.281 |
7.14 |
- |
- |
12.66 |
5.74 |
18.87 |
- |
- |
- |
| 0.312 |
7.92 |
- |
- |
13.68 |
6.33 |
20.78 |
- |
- |
- |
| 0.337 |
8.56 |
XS |
80 |
4.98 |
6.79 |
22.32 |
15.17 |
6.89 |
22.60 |
| 0.438 |
11.13 |
- |
120 |
19.00 |
8.62 |
28.32 |
- |
- |
- |
| 0.531 |
13.49 |
- |
160 |
22.51 |
10.21 |
33.54 |
- |
- |
- |
| 0.674 |
17.12 |
XXS |
- |
27.54 |
12.49 |
41.03 |
27.58 |
12.52 |
41.09 |
| 5 |
5.563 |
141.3 |
0.156 |
3.96 |
- |
- |
9.01 |
4.09 |
1.41 |
- |
- |
- |
| 0.188 |
4.78 |
- |
- |
10.79 |
4.89 |
16.09 |
- |
- |
- |
| 0.219 |
5.56 |
- |
- |
12.50 |
5.67 |
18.61 |
- |
- |
- |
| 0.258 |
6.55 |
STD |
40 |
14.62 |
6.43 |
21.77 |
14.81 |
6.72 |
22.07 |
| 0.281 |
7.14 |
- |
- |
15.85 |
7.19 |
23.62 |
- |
- |
- |
| 0.312 |
7.92 |
- |
- |
17.50 |
7.94 |
26.05 |
- |
- |
- |
| 0.344 |
8.74 |
- |
- |
19.17 |
8.70 |
28.57 |
- |
- |
- |
| 0.375 |
9.52 |
XS |
80 |
20.78 |
9.43 |
30.94 |
21.09 |
9.57 |
31.42 |
| 0.500 |
12.70 |
- |
120 |
27.04 |
12.27 |
40.28 |
- |
- |
- |
| 0.625 |
15.88 |
- |
160 |
32.96 |
14.95 |
49.11 |
- |
- |
- |
| 0.750 |
19.05 |
XXS |
- |
38.55 |
17.49 |
57.43 |
- |
- |
- |
| 6 |
6.625 |
168.3 |
0.188 |
4.78 |
- |
- |
12.92 |
5.86 |
19.27 |
- |
- |
- |
| 0.219 |
5.56 |
- |
- |
14.98 |
6.79 |
22.31 |
- |
- |
- |
| 0.250 |
6.35 |
- |
- |
17.02 |
7.72 |
25.36 |
- |
- |
- |
| 0.280 |
7.11 |
STD |
40 |
18.37 |
8.60 |
28.26 |
19.18 |
8.71 |
28.58 |
| 0.312 |
7.92 |
- |
- |
21.04 |
9.54 |
31.32 |
- |
- |
- |
| 0.344 |
8.74 |
- |
- |
23.08 |
10.47 |
24.39 |
- |
- |
- |
| 0.375 |
9.52 |
- |
- |
25.03 |
11.35 |
37.28 |
- |
- |
- |
| 0.432 |
10.97 |
XS |
80 |
28.57 |
12.96 |
42.56 |
28.89 |
13.12 |
43.05 |
| 0.562 |
14.27 |
- |
120 |
36.39 |
16.52 |
54.20 |
- |
- |
- |
| 0.719 |
18.26 |
- |
160 |
45.35 |
20.57 |
67.56 |
- |
- |
- |
| 0.864 |
21.95 |
XXS |
- |
53.16 |
24.11 |
79.22 |
- |
- |
- |
ASTM Std. A53 Welded Steel Pipes and Seamless Steel Pipes Available Sizes ( Dimensions and Weights)
| NPS Designator |
Outside Diameter |
Wall thickness |
Weight Class |
Schedule No. |
Weight |
| In |
mm |
In |
mm |
Lb / ft |
Kg/ft |
Kg/m |
| 8 |
8.625 |
219.1 |
0.188 |
4.78 |
- |
- |
16.94 |
7.69 |
25.26 |
| 0.203 |
5.16 |
- |
- |
18.26 |
8.29 |
27.22 |
| 0.219 |
5.56 |
- |
- |
19.66 |
8.93 |
29.28 |
| 0.250 |
6.35 |
- |
20 |
22.36 |
10.15 |
33.31 |
| 0.277 |
7.04 |
- |
30 |
24.70 |
11.21 |
36.31 |
| 0.312 |
7.92 |
- |
- |
27.70 |
12.58 |
41.24 |
| 0.322 |
8.18 |
STD |
40 |
28.55 |
12.96 |
42.55 |
| 0.344 |
8.74 |
- |
- |
30.42 |
13.81 |
45.34 |
| 0.375 |
9.52 |
- |
- |
33.04 |
15.00 |
49.20 |
| 0.406 |
10.31 |
- |
60 |
35.64 |
16.18 |
53.08 |
| 0.438 |
11.13 |
- |
- |
38.30 |
17.39 |
57.08 |
| 0.500 |
12.70 |
XS |
80 |
43.39 |
19.70 |
64.64 |
| 0.594 |
15.09 |
- |
100 |
50.95 |
23.13 |
75.92 |
| 0.719 |
18.26 |
- |
120 |
60.71 |
27.56 |
90.44 |
| 0.812 |
20.62 |
- |
140 |
67.76 |
30.76 |
100.92 |
| 0.875 |
22.22 |
XXS |
- |
72.42 |
32.88 |
107.88 |
| 0.906 |
23.01 |
- |
160 |
74.69 |
33.91 |
111.27 |
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