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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: 20-PV
Equivalent Materials: St44, St45.8, 1020, 410, 20G, 1.0405
Chemistry Composition
C, %
Si, %
Mn, %
P, %
S, %
Cr, %
Ni, %
Cu, %
0.18-0.24
0.17-0.37
0.35-0.65
0.015 max
0.015 max
0.15 max
0.15 max
0.15 max
Mechanical Properties
Tensile Strength , MPa
Yield Strength, MPa
Elongation, %
412-549
216 min
24 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 length: 25000mm, also U bending can be offered.
Keyword: boiler steel pipe, seamless steel pipe, seamless steel tube, ТУ 14-3Р-55-2001, TU 14-3R-55-2001
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