GB/T 5310-2023 Seamless steel pipe for high pressure boiler-YANTAI PIPE - High quality steel pipe products supplier from China

GB/T 5310-2023 Seamless steel pipe for high pressure boiler

Feb 11,2025

GB/T 5310 steel pipe for high pressure boiler seamless steel pipe, can be bending, crimping and similar processing molding, also suitable for welding operations. Steel pipe carbon steel material grade (chemical composition) is divided into 20G, 20MnG and 25MnG three kinds, using hot rolling (extrusion, expansion) or cold drawing (rolling) process.

Product Size

Outer diameter: 21.0～610.0mm
Wall thickness: 2.00～70.00mm
End: Flat end, beveling optional
Length: 3 to 12 meters or SRL, DRL, double and fixed feet

Product Packaging

Clear/black paint on exterior surfaces, steel strapping.

Chemical composition

Grade/Element	C	Mn	Si	P	S	Cr	Cu	Mo	Ni	V
Grade/Element	%			≤，%
20G	0.17～0.23	0.35～0.65	0.17～0.37	0.025	0.015	0.25	0.20	0.15	0.25	0.08
20MnG	0.17～0.23	0.70～1.00	0.17～0.37	0.025	0.015	0.25	0.20	0.15	0.25	0.08
25MnG	0.22～0.27	0.70～1.00	0.17～0.37	0.025	0.015	0.25	0.20	0.15	0.25	0.08

Product Mechanical Properties

	Tensile strength (MPa)	Yield strength ≥, MPa	Elongation after break ≥, %		Impact absorption energy J		Hardness
	Tensile strength (MPa)	Yield strength ≥, MPa	Vertical	Horizontal	Vertical	Horizontal	Brinell HBW	Vickers HV	Rockwell
20G	410～550	245	24	22	40	27	120～160	125～170
20MnG	415～560	240	22	20	40	27	125～170	130～180
25MnG	485～640	275	20	18	40	27	130～180	135～190

Application
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.

Hot Tags:

EN 10216-4 Alloy and non-alloy steel tubes and pipes with specified low-temperature properties

ASTM A106/A106M-18, ASME SA-106/SA-106M carbon steel seamless steel pipe for high temperature

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