ТУ 14-3Р-55-2001 12Ch1MF, 12Cr1MoV, Seamless Steel Pipes for Steam Boilers and Pipelines, Carbon Steel Pipes, Alloy Steel Pipes, TU 14-3R-55-2001 20-PV 20G, TU 14-3R-55-2001 20 St45.8 P265GH 1020, TU 14-3R-55-2001 12Ch1MF-PV 12Cr1MoVG, TU 14-3R-55-2001 12Ch1MF 12Cr1MoV, TU 14-3R-55-2001 15ChM 15CrMo, GB 5310, DIN 17175, EN 10216-2, BS 3059

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, %
	Outside Diameter, mm	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, %
	Outside Diameter, mm	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, %
	Wall Thickness, mm	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, %
	Wall Thickness, mm	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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