GB/T 3091-2008 Q235A welded steel pipes

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11-May-2024

Q235A welded steel pipes has good toughness and plasticity which under GB/T 3091-2008 standard with good weldability and hot workability, Q235A welded steel pipes’s surface can be painted black paint, anti-corrosion oil, galvanized or customer requirements. Widely used in transportation, gas and other applications, mainly used in the life of the structural industry and coal mining and chemical industry construction and agriculture.

GB/T 3091-2008 Q235A welded steel pipe Chemical composition

chemical composition of Q235A
chemical composition of Q235A
Grade	Class	C	Mn	Si	S	P
Grade	Class			no more than
Q235	A	0.14-0.22	0.3-0.65	0.3	0.05	0.045

Q235A welded steel pipes Mechanical properties

mechanical property of Q235A

Grade	lowder yield		Tensile	Extensibility after
	strength Rel/N/MM^2		strength	fracture A/%
	no less than		R/N/MM^2	no less than
	t<=16mm	T>16mm	no less than	D<=168.3MM	D>168.3mm
Q235A	235	225	370	15	20

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