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TU 14-3-460-75
Published:2013-04-24 15:06:52    Text Size:【BIG】【MEDIUM】【SMALL
Summary:TU 14-3-460-75 Seamless Steel Pipes for Steam Boilers and Pipelines
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)

Grade : 20K acc. TU 14-3-460 ( analog st 45.8-WN 1.0405 acc. DIN 17175 )

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.
  2. Length up to 9 m (subject to agreement).
  3. 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
-
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Precision Seamless Steel Tube Manufacturer