TU 14-3-460-75. Seamless Steel Pipes for Steam Boilers and Pipelines
Pipes are used for steam boilers and turbogenerators designed for high and ultrahigh steam characteristics.
Outside Diameter:
Hot-formed: 57 - 219 mm
Cold-formed: 10 - 76 mm
(10; 12; 16; 20; 22; 25; 28; 30; 32; 36; 38; 40; 42; 45; 48; 50; 51; 54; 55; 57; 60; 63; 70; 76; 83; 89; 102; 108; 114; 121; 133; 140; 146; 152; 159; 168; 194; 219)
Wall Thickness:
Hot-formed: 3,5 - 40 mm
Cold-formed: 2 - 12 mm
(2; 2,5; 3; 3,5; 4; 4,5; 5; 5,5; 6; 6,5; 7; 7,5; 8; 9; 10; 11; 12; 13; 14; 15; 16; 17; 18; 19; 20; 22; 24; 25; 26; 28; 30; 32; 34; 36; 38; 40)
Tolerances:
Hot-formed
OD:
D 57 - 219 mm: ± 1 %
WT:
OD < 108 mm:+ 15% - 10%, OD > 108 mm: + 20% - 5%.
Cold-formed:
OD:
D 10 - 30 mm: ± 0,3 mm,
D 32 - 52 mm: ± 0,4 mm,
D 51 - 76 mm: ± 0,8 %.
WT:
S 2 - 12 mm: ± 10%.
Notes:
- 1. Steel grades: 20, 20-PV, 12Cr1MoV, 12Cr1MoV-PV, 15CrMo, 15MnSi, 12Cr18Ni12Ti.
- Length up to 9 m (subject to agreement).
- Pipes pass 100% non-destructive test.
|
| Sizes (Hot-formed) |
OD, mm |
WT, mm |
OD, mm |
WT, mm |
OD, mm |
WT, mm |
57; 60 |
3,5 - 12 |
114 |
6 - 26 |
159 |
6 - 36 |
76; 83; 89 |
3,5 - 20 |
121 |
5 - 26 |
168 |
6,5 - 40 |
102 |
4,5 - 16 |
133 |
6 - 34 |
194; 219 |
8 - 36 |
108 |
4,5 - 22 |
140; 146; 152 |
6 - 36 |
|
|
| Sizes (Cold-formed) |
OD, mm |
WT, mm |
OD, mm |
WT, mm |
OD, mm |
WT, mm |
10 |
2; 2,5 |
28 - 36 |
2 - 8 |
51 - 57 |
2,5 - 12 |
12 |
2; 2,5; 3 |
38 |
2 - 9 |
60; 63; 70 |
3 - 12 |
16 |
2 - 4 |
40 |
2,5 - 11 |
76 |
3,5 - 12 |
20; 22 |
2 - 5 |
42 |
2,5 - 12 |
|
|
25 |
2 - 6 |
45; 48; 50 |
2,5 - 11 |
|
|
| Mechanical properties |
Steel Grade |
Tensile Strength, N/mm2 (min) |
Yield Strength, N/mm2 (min) |
Elongation, % (min) |
20, 20-PV |
412 - 549 |
216 |
long. - 24,
trans. - 22 |
12Cr1MoV, 12Cr1MoV-PV |
441 - 637 |
274 |
long. - 21,
trans. - 19 |
15CrMo |
441 - 637 |
235 |
long. - 21,
trans. - 20 |
15MnSi |
490 |
294 |
long. - 18,
trans. - 16 |
12Cr18Ni12Ti |
539 - 686 |
215 - 392 |
35 |
| Chemical Composition (%, max) |
Steel Grade |
C |
Si |
Mn |
Cr |
Ni |
Mo |
S |
P |
Cu |
Va |
20 |
0,17-0,24 |
0,17-0,37 |
0,35-0,65 |
0,25 |
0,25 |
- |
0,03 |
0,025 |
0,3 |
- |
20-PV |
0,17-0,24 |
0,17-0,37 |
0,35-0,65 |
0,25 |
0,25 |
- |
- |
0,03 |
0,3 |
- |
12Cr1MoV,
12Cr1MoV-PV |
0,10-0,15 |
0,17-0,37 |
0,40-0,70 |
0,9-1,2 |
0,25 |
0,25-0,35 |
0,025 |
0,025 |
0,2 |
0,15-0,30 |
15MnSi |
0,11-0,18 |
0,17-0,37 |
0,40-0,70 |
0,8-1,1 |
0,3 |
0,40-0,55 |
0,025 |
0,025 |
0,3 |
- |
12Cr18Ni12Ti |
0,12 |
0,80 |
1-2 |
17-19 |
11-13 |
- |
0,020 |
0,030 |
0,3 |
- |
|
