
When it comes to reliable and robust piping solutions, the Black Welded Pipe (Plain End) stands out. Whether you’re working on industrial projects, construction, or plumbing installations, this pipe offers exceptional performance. In this article, we’ll explore its features, benefits, and potential applications.

Welded Steel Pipe – Class Medium
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Nominal Size |
Outside Diameter |
Wall Thickness |
Calculated Weight |
|||||
Max |
Min |
Plain Ends |
Threads and Coupling |
|||||
mm |
in |
mm |
mm |
mm |
Kg/m |
Kg/m |
Kg/m |
Kg/m |
15 |
1/2 |
21.7 |
21.1 |
2.6 |
1.21 |
0.369 |
1.22 |
0.372 |
20 |
3/4 |
27.2 |
26.6 |
2.6 |
1.56 |
0.475 |
1.57 |
0.479 |
25 |
1 |
34.2 |
33.24 |
3.2 |
2.41 |
0.735 |
2.43 |
0.741 |
32 |
1 1/4 |
42.9 |
42.1 |
3.2 |
3.10 |
0.945 |
3.13 |
0.954 |
40 |
1 1/2 |
48.8 |
48.0 |
3.2 |
3.57 |
1.09 |
3.61 |
1.10 |
50 |
2 |
60.8 |
59.8 |
3.6 |
5.03 |
1.53 |
5.10 |
1.55 |
65 |
2 1/2 |
76.6 |
75.4 |
3.6 |
6.43 |
1.96 |
6.55 |
2.00 |
80 |
3 |
89.5 |
88.1 |
4.0 |
8.37 |
2.55 |
8.54 |
2.60 |
100 |
4 |
114.9 |
113.3 |
4.5 |
12.2 |
3.72 |
12.5 |
3.81 |
125 |
5 |
140.6 |
138.7 |
5.0 |
16.6 |
5.06 |
17.1 |
5.21 |
150 |
6 |
166.1 |
164.1 |
5.0 |
19.7 |
6.0 |
20.3 |
6.19 |
Welded Steel Pipe – Class Heavy
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Nominal Size |
Outside Diameter |
Wall Thickness |
Calculated Weight |
|||||
Max |
Min |
Plain Ends |
Threads and Coupling |
|||||
mm |
in |
mm |
mm |
mm |
Kg/m |
Kg/m |
Kg/m |
Kg/m |
15 |
1/2 |
21.7 |
21.1 |
3.2 |
1.44 |
0.439 |
1.45 |
0.442 |
20 |
3/4 |
27.2 |
26.6 |
3.2 |
1.87 |
0.570 |
1.88 |
0.573 |
25 |
1 |
34.2 |
33.24 |
4.0 |
2.94 |
0.896 |
2.96 |
0.902 |
32 |
1 1/4 |
42.9 |
42.1 |
4.0 |
3.80 |
1.16 |
3.83 |
0.954 |
40 |
1 1/2 |
48.8 |
48.0 |
4.0 |
4.38 |
1.34 |
4.42 |
1.35 |
50 |
2 |
60.8 |
59.8 |
4.5 |
6.19 |
1.89 |
6.26 |
1.91 |
65 |
2 1/2 |
76.6 |
75.4 |
4.5 |
7.93 |
2.42 |
8.05 |
2.45 |
80 |
3 |
89.5 |
88.1 |
5.0 |
10.3 |
3.14 |
10.5 |
3.20 |
100 |
4 |
114.9 |
113.3 |
5.4 |
14.5 |
4.42 |
14.8 |
4.51 |
125 |
5 |
140.6 |
138.7 |
5.4 |
17.9 |
5.46 |
18.4 |
5.61 |
150 |
6 |
166.1 |
164.1 |
5.4 |
21.3 |
6.49 |
21.9 |
6.68 |
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