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TU 14-3R-55-2001 20-PV
TU 14-3R-55-2001 20
TU 14-3R-55-2001 12Ch1MF-PV
TU 14-3R-55-2001 12Ch1MF
TU 14-3R-55-2001 15ChM
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TU 14-3R-55-2001 Seamless steel pipes for steam boilers and pipelines
Standard: TU 14-3R-55-2001
Equivalent Standard: DIN 17175, EN 10216-2
Material: 12Ch1MF
Equivalent Materials: 12Cr1MoV
Chemistry Composition
C, %
Si, %
Mn, %
P, %
S, %
Cr, %
Mo, %
V, %
Ni, %
Cu, %
0.10-0.15
0.17-0.37
0.40-0.70
0.025 max
0.025 max
0.90-1.20
0.25-0.35
0.15-0.30
0.25 max
0.20 max
Mechanical Properties
Tensile Strength , MPa
Yield Strength, MPa
Elongation, %
441-637
274 min
21 min
Outside Diameter & Tolerance
Hot rolled
Outside Diameter, mm
Tolerance, %
Normal
High
OD<50
±0.40mm
-
50≤OD<114
-
±0.75
114≤OD<245
±1.0
±0.9
245≤OD<325
±1.0
±0.9
OD≥325
+1.25/-1.0
±1.0
Cold & Warm
Outside Diameter, mm
Tolerance, %
Normal
High
OD<30
±0.30mm
-
30≤OD<50
±0.40mm
-
50≤OD≤108
±0.80mm
-
OD>108
±0.90mm
-
Wall thickness & Tolerance
Hot rolled
Wall Thickness, mm
Tolerance, %
Normal
High
OD<50
+12.5/-10.0
-
50≤OD<114, WT<7
+15.0/-10.0
-
50≤OD<114, 7≤WT≤14
+15.0/-10.0
+12.5/-10.0
50≤OD<114, WT>14
+15.0/-10.0
±10.0
114≤OD<325
+20.0/-5.0
-
114≤OD<325
+20.0/-5.0
+15.0/-5.0
OD≥325
+20.0/-5.0
-
OD≥325
+20.0/-5.0
+17.5/-5.0
377≤OD≤530, 25≤OD≤90
+20.0/-5.0
-
Cold & Warm
Wall Thickness, mm
Tolerance, %
Normal
High
OD<108
±10
-
OD≥108
+15.0/-5.0
-
Length: 4000mm; 8030mm; 8050mm; 12010mm; 12030mm; 12050mm; and so on.
Max developed length: 30 meters, also U bending, finning, studded process can be provided.
Option: shot blasting on the outside surface to remove mill scale, make the surface matte colour; surface polishing as preparation work done for further processing, for instance finning.
Keyword: boiler steel pipes, seamless steel pipes, seamless steel tubes, ТУ 14-3Р-55-2001, TU 14-3R-55-2001
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