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.


GB/T3091 Black & Galvanized Steel Pipe

Nominal diameter   (mm)
Outside diameter   (mm)
Ordinary steel pipe
Extra Strong Steel Pipe
Wall thickness (mm)
Theoretical weight (kg/m)
Wall thickness (mm)
Theoretical weight (kg/m)
15
21.3
2.8
1.28
3.5
1.54
20
26.9
2.8
1.66
3.5
2.02
25
33.7
3.2
2.41
4.0
2.93
32
42.4
3.5
3.36
4.0
3.79
40
48.3
3.5
3.87
4.5
4.86
50
60.3
3.8
5.29
4.5
6.19
65
76.1
4.0
7.11
4.5
7.95
80
88.9
4.0
8.38
5.0
10.35
100
114.3
4.0
10.88
5.0
13.48
125
139.7
4.0
13.39
5.5
18.20
150
168.3
4.5
18.18
6.0
24.02