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GB/T 3091-2008 Q235A welded steel pipes

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 pipes

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

chemical composition of Q235A

Grade

Class

C

Mn

Si

S

P

 

 

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

About GB/T Q235A welded steel pipe heat treatment on the specification and production process, if you want to know more, please feel free to contact us, we will give you a detailed answer, we will take strict GB/T 3091-2008 Q235A welded steel pipes product quality supervision, You provide the best quality products, you are welcome to inquire.

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