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GB/T 28413

GB/T 28413 steel pipe is a welded steel pipe for boilers and heat exchangers, which can be bent, crimped and similarly shaped, and is also suitable for welding operations.

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GB/T 28413

GB/T 28413 steel pipe is a welded steel pipe for boilers and heat exchangers, which can be bent, crimped and similarly shaped, and is also suitable for welding operations.

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GB/T 28413

Description

Product Description

GB/T 28413 steel pipe is a welded steel pipe for boilers and heat exchangers, which can be bent, crimped and similarly shaped, and is also suitable for welding operations. Carbon steel pipe material grade (chemical composition) is divided into 10 and 20 two kinds, using high frequency welding (HFW) or electrofusion welding (EFW) straight seam welding process. Alloy steel pipe material grades (chemical composition) are Q245R, Q345R, 15CrMoR, 12Cr1MoVR, etc., and are manufactured by high-frequency welding (HFW) or electric fusion welding (EFW) straight-seam welding process.

Product Size

Outer diameter: 21.0～610.0mm
Wall thickness: 2.00～40.00mm
End: Flat end, beveling for option
Length: 3 to 12 meters or SRL, DRL, double and fixed feet.

Packaging

Clear/black paint on exterior surfaces, steel strapping.

Chemical composition

Grade/Elements	C	Mn	Si	P	S	Cr	Cu	Mo	Ni	V
Grade/Elements	%			≤，%
10	0.07～0.13	0.35～0.65	0.17～0.37	0.035	0.035	0.15	0.25		0.30
20	0.17～0.23	0.35～0.65	0.17～0.37	0.035	0.035	0.25	0.25		0.30

Grade/Elements	C	Mn	Si	P	S	Cr	Nb	Mo	Ni	V
Grade/Elements	%			≤，%
Q245R	≤0.20	0.50～1.00	≤0.35	0.025	0.015
Q345R	≤0.20	1.20～1.60	≤0.55	0.025	0.015
Q370R	≤0.18	1.20～1.60	≤0.55	0.025	0.015		0.015～0.050
18MnMoNbR	≤0.22	1.20～1.60	0.15～0.50	0.020	0.010		0.025～0.050	0.45～0.65
13MnNiMoR	≤0.15	1.20～1.60	0.15～0.50	0.020	0.010	0.20～0.40	0.005～0.020	0.20～0.40	0.60～1.00
15CrMoR	0.12～0.18	0.40～0.70	0.15～0.40	0.025	0.010	0.80～1.20		0.45～0.60
14Cr1MoR	0.05～0.17	0.40～0.65	0.50～0.80	0.020	0.010	1.15～1.50		0.45～0.65
12Cr2Mo1R	0.08～0.15	0.30～0.60	≤0.50	0.020	0.010	2.00～2.50		0.90～1.10
12Cr1MoVR	0.08～0.15	0.40～0.70	0.15～0.40	0.025	0.010	0.90～1.20		0.25～0.35	0.25～0.35	0.15～0.30

Product Mechanical Properties

Grades/Items	Tensile strength MPa	Yield strength ≥, MPa	Elongation after break ≥, %
10	335～475	205	28
20	410～550	245	24

Grades/Items	Tensile strength MPa				Yield strength ≥, MPa			Elongation after break ≥, %	Impact value ≥, J
	thickness≤16mm	16＜thickness≤36 mm		36＜thickness≤60 mm	thickness≤16mm	16＜thickness≤36 mm	36＜thickness≤60 mm		Impact value ≥, J
	thickness≤16mm	16＜thickness≤36 mm		36＜thickness≤60 mm	thickness≤16mm	16＜thickness≤36 mm	36＜thickness≤60 mm		Temperature ℃	Average value
Q245R	400～520				245	235	225	25	0	31
Q345R	510～640	500～630		490～620	345	325	315	21	0	34
Q370R	530～630		520～620		370	360	340	20	-20	34
18MnMoNbR				570～720			400	17	0	41
13MnNiMoR				570～720			390	18	0	41
15CrMoR	450～590				295			19	20	31
14Cr1MoR	520～680				310			19	20	34
12Cr2Mo1R	520～680				310			19	20	34
12Cr1MoVR	440～590				245			19	20	34

Application range
Typically used in the construction of petroleum and petrochemical refineries, power plants, boilers and ships that transport fluids and gases with high temperatures and pressures.

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