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GB/T5310 Seamless Steel Tubes For High Pressure Boilers

GB/T5310 seamless steel tubes for high pressure boilers，GB/T5310 steel pipe，GB/T5310 seamless steel tubes，pipes for high pressure boiler.

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Description

GB/T5310 seamless steel tubes for high pressure boilers

Seamless steel tube used in high pressure boiler is a kind of boiler tube, which has strict requirements on the materials and technology used in making steel tube. Because high-pressure boiler tube is often used in high temperature and high pressure conditions, steel pipe in high temperature flue gas and water vapor, oxidation and corrosion will occur. Therefore, the steel pipe is required to have high durable strength, high oxidation resistance and corrosion resistance, and good organizational stability.

Specification

Product name：Seamless steel pipe for high pressure boiler

Brand：WL

Place of origin：China

Standard：GB/T5310

Grade：20G, 20MnG, 15MoG, 15CrMoG, 12Cr2MoG, 12Cr1MoVG

OD：21.3 mm - 609.6 mm

WT：1 mm - 30 mm

Unit length：4 m - 12 m or as per customers’ request

Ends：plain end

Section shape：round

Invoicing：by theoretical weight

Chemical composition

GB/T5310	Chemical composition(%)
Grade	C	Si	Mn	Cr	Mo	P	S
20G	0.17-0.23	0.17-0.37	0.35-0.65			0.025	0.015
20MnG	0.17-0.23	0.17-0.37	0.70-1.00			0.025	0.015
15MoG	0.12-0.20	0.17-0.37	0.70-1.00			0.025	0.015
15CrMoG	0.12-0.18	0.17-0.37	0.40-0.70	0.80-1.10	0.40-0.55	0.025	0.015
12Cr2MoG	0.08-0.15	≤0.50	0.40-0.60	2.00-2.50	0.90-1.13	0.025	0.015
12Cr1MoVG	0.08-0.15	0.17-0.37	0.40-0.70	0.90-1.20	0.25-0.35	0.025	0.010

Mechanical properties

GB/T5310	Mechanical properties
Grade	Tensile Strength （MPa）	Yield strength （MPa）	Elongation (%)
Grade	Tensile Strength （MPa）	Yield strength （MPa）	lengthways	crosswise
20G	410-550	≥245	≥24	≥22
20MnG	415-560	≥240	≥22	≥20
15MoG	450-600	≥270	≥22	≥20
15CrMoG	440-640	≥295	≥21	≥19
12Cr2MoG	450-600	≥280	≥22	≥20
12Cr1MoVG	470-640	≥255	≥21	≥19

Application

seamless steel tubes for high pressure boilers is mainly used to manufacture superheater tube, reheater tube, conduit pipe, main steam pipe and so on of high pressure and ultra high pressure boiler .Used for high pressure boiler (P>9.8MPa.450℃<T<650℃) of heating surface pipe, box, economizer, superheater, heater, etc.