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ROUND SEAMLESS PIPES FROM NOT ALLOYED STEELS FOR SPECIAL REQUIREMENTS
The pipes are used in tank and pipelines construction, as in general machinery and instrument-making industry. The pipes are manufactured from materials St37.0, St44.0, St52.0. The range of size is given in Table 24. The chemical composition is given in Table 25. The mechanical properties are given in Table 26. DIN to GOST steel specifications conversion data is given in Table 27.
Table 24
|
Outside diameter, mm
|
Wall thickness, mm
|
|
1.0
|
1.2
|
1.4
|
1.6
|
1.8
|
2.0
|
2.3
|
2.6
|
2.9
|
3.2
|
3.6
|
4.0
|
4.5
|
5.0
|
5.6
|
6.3
|
7.1
|
8.0
|
8.8
|
10.0
|
11.0
|
12.5
|
14.2
|
16.0
|
|
10.2
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
13.5
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
|
|
|
|
|
|
|
|
|
|
|
|
|
16.0
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
|
|
|
|
|
|
|
|
|
|
|
|
17.2
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
|
|
|
|
|
|
|
|
|
|
|
|
20.0
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
|
|
|
|
|
|
|
|
|
|
|
21.3
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
|
|
|
|
|
|
|
|
|
|
|
25.0
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
|
|
|
|
|
|
|
|
|
|
|
26.9
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
|
|
|
|
|
|
|
|
|
|
|
30.0
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
|
|
|
|
|
|
|
|
|
31.8
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
|
|
|
|
|
|
|
|
|
33.7
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
|
|
|
|
|
|
|
|
|
38.0
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
|
|
|
|
|
|
|
|
|
42.4
|
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
|
|
|
|
|
|
|
|
|
44.5
|
|
|
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
|
|
|
|
|
|
|
|
|
|
|
48.3
|
|
|
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
|
|
|
|
|
|
|
|
|
|
|
51.0
|
|
|
|
|
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
|
|
|
|
|
|
|
|
|
|
|
57.0
|
|
|
|
|
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
|
|
|
|
|
|
|
|
|
60.3
|
|
|
|
|
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
|
|
|
|
|
|
|
|
|
63.5
|
|
|
|
|
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
|
|
|
|
|
|
|
70.0
|
|
|
|
|
|
|
|
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
|
|
|
|
|
|
|
76.1
|
|
|
|
|
|
|
|
|
|
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
|
|
|
|
|
|
|
82.5
|
|
|
|
|
|
|
|
|
|
|
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
|
|
|
|
|
|
88.9
|
|
|
|
|
|
|
|
|
|
|
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
|
|
|
|
|
|
101.6
|
|
|
|
|
|
|
|
|
|
|
|
|
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
|
|
108.0
|
|
|
|
|
|
|
|
|
|
|
|
|
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
|
|
114.3
|
|
|
|
|
|
|
|
|
|
|
|
|
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
|
|
121.0
|
|
|
|
|
|
|
|
|
|
|
|
|
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
|
|
127.0
|
|
|
|
|
|
|
|
|
|
|
|
|
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
|
|
133.0
|
|
|
|
|
|
|
|
|
|
|
|
|
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
|
|
139.7
|
|
|
|
|
|
|
|
|
|
|
|
|
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
|
|
152.4
|
|
|
|
|
|
|
|
|
|
|
|
|
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
|
|
159.0
|
|
|
|
|
|
|
|
|
|
|
|
|
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
|
|
168.3
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
The length of pipes conforms to DIN 1629, 2448 standards and can be specified in order.
Table 25
|
Material
|
Material No
|
Fraction of total mass of elements, per cent
|
|
C, max.
|
Si, max.
|
Mn,max.
|
P, max.
|
S, max.
|
N*, max.
|
|
St 37.0
|
1.0254
|
0.17
|
0.60
|
1.70
|
0.040
|
0.040
|
0.009-0.014
|
|
St 44.0
|
1.0256
|
0.21
|
0.60
|
1.70
|
0.040
|
0.040
|
0.009-0.014
|
|
St 52.0
|
1.0421
|
0.22
|
0.60
|
1.70
|
0.040
|
0.035
|
0.009-0.014
|
* - Admissibility of excess of maximum value (by 0.012% for heat analysis and 0.014% for product analysis) under following conditions: for each Nitrogen fraction about 0.001 percents, the content of phosphorus is maintained on 0.005 percents below maximum value given in table.
Table 26
|
Material
|
Material No
|
Tensile strength, Rm, N/mm²
|
Yield strength, min., Ren, N/mm²
|
Elongation, min., A5, per cent
|
|
St 37.0
|
1.0254
|
350.0 - 480.0
|
235.0
|
25.0
|
|
St 44.0
|
1.0256
|
420.0 - 550.0
|
275.0
|
21.0
|
|
St 52.0
|
1.0421
|
500.0 - 650.0
|
355.0
|
21.0
|
Table 27
|
DIN
|
GOST
|
|
St 37.0
|
10
|
|
St 44.0
|
20
|
|
St 52.0
|
10G2
|
Трубы бурильные
Трубы насосно-компрессорные и муфты к ним
Трубы обсадные и муфты к ним
Трубы стальные бесшовные горячедеформированные
Трубы стальные бесшовные для паровых котлов и трубопроводов (КВД)
Трубы стальные бесшовные холоднодеформированные и теплодеформированные
API 5CT
API 5L
DIN 17175
DIN 1629, 2448
Трубокомлектация
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