Standard Steel Pipe

Standard steel pipe refers to pipe used in fluid transfer under a normal or lower pressure.   In addition, it is used as structural steel for construction.   TFQ standard pipes are produced according to various standards; such as BS 1387/1985, ASTM A53 Grade A&B, etc.   TFQ also produces higher strength steel pipe such as 350 MPa yield, 490 MPa tensile, etc.

BS 1387/1985 Black and Galvanized Steel Pipe

Nominal diameter (mm)
Designation of thread (mm)
Outside diameter (mm)
Thickness (mm)
Weight
Max.
Min.
Plainend   GPE  
Screwed and socketed GTC
BS-L
15
1/2
21.4
21.0
2.0
0.947
0.956
20
3/4
26.9
26.4
2.3
1.38
1.39
25
1
33.8
33.2
2.6
1.98
2.00
32
1 1/4
42.5
41.9
2.6
2.54
2.57
40
1 1/2
48.4
47.8
2.9
3.23
3.27
50
2
60.2
59.6
2.9
4.08
4.15
65
2 1/2
76.0
75.2
3.2
5.71
5.83
80
3
88.7
87.9
3.2
6.72
6.89
100
4
113.9
113.0
3.6
9.75
10.00
BS-M
15
1/2
21.7
21.1
2.6
1.21
1.22
20
3/4
27.3
26.6
2.6
1.56
1.57
25
1
34.2
33.4
3.2
2.41
2.43
32
1 1/4
42.9
42.1
3.2
3.10
3.13
40
1 1/2
48.8
48.0
3.2
3.57
3.61
50
2
60.8
59.8
3.6
5.03
5.10
65
2 1/2
76.6
75.4
3.6
6.43
6.55
80
3
89.5
88.1
4.0
8.37
8.54
100
4
114.9
113.3
4.5
12.2
12.5
125
5
140.9
138.7
5.0
16.6
17.1
150
6
166.1
164.1
5.0
19.7
20.3
BS-H
15
1/2
21.7
21.1
3.2
1.44
1.45
20
3/4
27.2
26.6
3.2
1.87
1.88
25
1
34.2
33.4
4.0
2.94
2.96
32
1 1/4
42.9
42.1
4.0
3.80
3.83
40
1 1/2
48.8
48.0
4.0
4.38
4.42
50
2
60.8
59.8
4.5
6.19
6.26
65
2 1/2
76.6
75.4
4.5
7.93
8.05
80
3
89.5
88.1
5.0
10.3
10.5
100
4
114.9
113.3
5.4
14.5
14.8
125
5
140.6
138.7
5.4
17.9
18.4
150
6
166.1
164.1
5.4
21.3
21.9

BS-S-A1 Black and Galvanized Steel Pipe

Nominal size (DN)
Outside diameter(mm)
Thickness
Weight(kg/m)
Max.
Min.
GPE
GTC
1/2
21.4
21.0
1.9
0.904
0.913
3/4
26.9
26.4
2.1
1.27
1.28
1
33.8
33.2
2.3
1.77
1.79
1 1/4
42.5
41.9
2.3
2.26
2.29
1 1/2
48.4
47.8
2.5
2.81
2.85
2
60.2
59.6
2.6
3.67
3.74
2 1/2
76.0
75.2
2.9
5.2
5.32
3
88.7
87.9
2.9
6.11
6.28
4
113.9
113.0
3.2
8.7
8.95
5
140.6
138.7
3.6
12.08
12.58
6
166.1
164.1
3.6
14.34
14.64